<?xml version="1.0" encoding="utf-8"?>
<Return xmlns="http://www.irs.gov/efile" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.irs.gov/efile" returnVersion="2022v5.0">
  <ReturnHeader binaryAttachmentCnt="0">
    <ReturnTs>2023-11-15T14:21:53-06:00</ReturnTs>
    <TaxPeriodEndDt>2022-12-31</TaxPeriodEndDt>
    <PreparerFirmGrp>
      <PreparerFirmEIN>521022232</PreparerFirmEIN>
      <PreparerFirmName>
        <BusinessNameLine1Txt>SNYDER COHN PC</BusinessNameLine1Txt>
      </PreparerFirmName>
      <PreparerUSAddress>
        <AddressLine1Txt>11200 ROCKVILLE PIKE SUITE 415</AddressLine1Txt>
        <CityNm>NORTH BETHESDA</CityNm>
        <StateAbbreviationCd>MD</StateAbbreviationCd>
        <ZIPCd>20852</ZIPCd>
      </PreparerUSAddress>
    </PreparerFirmGrp>
    <ReturnTypeCd>990</ReturnTypeCd>
    <TaxPeriodBeginDt>2022-01-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>210735173</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>AMERICAN ASTRONOMICAL SOCIETY</BusinessNameLine1Txt>
      </BusinessName>
      <BusinessNameControlTxt>AMER</BusinessNameControlTxt>
      <PhoneNum>2023282010</PhoneNum>
      <USAddress>
        <AddressLine1Txt>1667 K STREET NW SUITE 800</AddressLine1Txt>
        <CityNm>WASHINGTON</CityNm>
        <StateAbbreviationCd>DC</StateAbbreviationCd>
        <ZIPCd>20006</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>KEVIN B MARVEL PHD</PersonNm>
      <PersonTitleTxt>EXECUTIVE OFFICER</PersonTitleTxt>
      <PhoneNum>2023282010</PhoneNum>
      <SignatureDt>2023-11-14</SignatureDt>
      <DiscussWithPaidPreparerInd>1</DiscussWithPaidPreparerInd>
    </BusinessOfficerGrp>
    <SigningOfficerGrp>
      <PersonFullName>
        <PersonFirstNm>KEVIN</PersonFirstNm>
        <PersonLastNm>MARVEL PHD</PersonLastNm>
      </PersonFullName>
      <SSN>XXX-XX-XXXX</SSN>
    </SigningOfficerGrp>
    <IRSResponsiblePrtyInfoCurrInd>1</IRSResponsiblePrtyInfoCurrInd>
    <PreparerPersonGrp>
      <PreparerPersonNm>KEITH JENNINGS</PreparerPersonNm>
      <PTIN>P01319883</PTIN>
      <PhoneNum>3016526700</PhoneNum>
      <PreparationDt>2023-11-14</PreparationDt>
    </PreparerPersonGrp>
    <AdditionalFilerInformation>
      <TrustedCustomerGrp>
        <TrustedCustomerCd>2</TrustedCustomerCd>
        <AuthenticationAssuranceLevelCd>AAL1</AuthenticationAssuranceLevelCd>
        <IdentityAssuranceLevelCd>IAL1</IdentityAssuranceLevelCd>
      </TrustedCustomerGrp>
    </AdditionalFilerInformation>
    <TaxYr>2022</TaxYr>
    <BuildTS>2023-04-26 12:10:37Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCnt="10">
    <IRS990 documentId="RetDoc1038000001" referenceDocumentId="RetDoc1044400001">
      <PrincipalOfficerNm>KEVIN B MARVEL PHD</PrincipalOfficerNm>
      <USAddress>
        <AddressLine1Txt>1667 K STREET NW SUITE 800</AddressLine1Txt>
        <CityNm>WASHINGTON</CityNm>
        <StateAbbreviationCd>DC</StateAbbreviationCd>
        <ZIPCd>20006</ZIPCd>
      </USAddress>
      <GrossReceiptsAmt>20342339</GrossReceiptsAmt>
      <GroupReturnForAffiliatesInd>0</GroupReturnForAffiliatesInd>
      <Organization501c3Ind>X</Organization501c3Ind>
      <WebsiteAddressTxt>WWW.AAS.ORG</WebsiteAddressTxt>
      <TypeOfOrganizationCorpInd>X</TypeOfOrganizationCorpInd>
      <FormationYr>1899</FormationYr>
      <LegalDomicileStateCd>DC</LegalDomicileStateCd>
      <ActivityOrMissionDesc>TO PROMOTE SCIENTIFIC RESEARCH IN AND PUBLIC UNDERSTANDING OF ASTRONOMY AND ASTROPHYSICS.</ActivityOrMissionDesc>
      <VotingMembersGoverningBodyCnt>11</VotingMembersGoverningBodyCnt>
      <VotingMembersIndependentCnt>10</VotingMembersIndependentCnt>
      <TotalEmployeeCnt>51</TotalEmployeeCnt>
      <TotalVolunteersCnt>250</TotalVolunteersCnt>
      <TotalGrossUBIAmt>1055472</TotalGrossUBIAmt>
      <NetUnrelatedBusTxblIncmAmt>514281</NetUnrelatedBusTxblIncmAmt>
      <PYContributionsGrantsAmt>2174277</PYContributionsGrantsAmt>
      <CYContributionsGrantsAmt>1821948</CYContributionsGrantsAmt>
      <PYProgramServiceRevenueAmt>14513008</PYProgramServiceRevenueAmt>
      <CYProgramServiceRevenueAmt>15876412</CYProgramServiceRevenueAmt>
      <PYInvestmentIncomeAmt>742267</PYInvestmentIncomeAmt>
      <CYInvestmentIncomeAmt>586456</CYInvestmentIncomeAmt>
      <PYOtherRevenueAmt>41614</PYOtherRevenueAmt>
      <CYOtherRevenueAmt>1256648</CYOtherRevenueAmt>
      <PYTotalRevenueAmt>17471166</PYTotalRevenueAmt>
      <CYTotalRevenueAmt>19541464</CYTotalRevenueAmt>
      <PYGrantsAndSimilarPaidAmt>1060432</PYGrantsAndSimilarPaidAmt>
      <CYGrantsAndSimilarPaidAmt>1024438</CYGrantsAndSimilarPaidAmt>
      <PYBenefitsPaidToMembersAmt>0</PYBenefitsPaidToMembersAmt>
      <CYBenefitsPaidToMembersAmt>0</CYBenefitsPaidToMembersAmt>
      <PYSalariesCompEmpBnftPaidAmt>7436809</PYSalariesCompEmpBnftPaidAmt>
      <CYSalariesCompEmpBnftPaidAmt>8152589</CYSalariesCompEmpBnftPaidAmt>
      <PYTotalProfFndrsngExpnsAmt>0</PYTotalProfFndrsngExpnsAmt>
      <CYTotalProfFndrsngExpnsAmt>0</CYTotalProfFndrsngExpnsAmt>
      <CYTotalFundraisingExpenseAmt>0</CYTotalFundraisingExpenseAmt>
      <PYOtherExpensesAmt>8298363</PYOtherExpensesAmt>
      <CYOtherExpensesAmt>10609166</CYOtherExpensesAmt>
      <PYTotalExpensesAmt>16795604</PYTotalExpensesAmt>
      <CYTotalExpensesAmt>19786193</CYTotalExpensesAmt>
      <PYRevenuesLessExpensesAmt>675562</PYRevenuesLessExpensesAmt>
      <CYRevenuesLessExpensesAmt>-244729</CYRevenuesLessExpensesAmt>
      <TotalAssetsBOYAmt>21871177</TotalAssetsBOYAmt>
      <TotalAssetsEOYAmt>26257850</TotalAssetsEOYAmt>
      <TotalLiabilitiesBOYAmt>5401488</TotalLiabilitiesBOYAmt>
      <TotalLiabilitiesEOYAmt>12922288</TotalLiabilitiesEOYAmt>
      <NetAssetsOrFundBalancesBOYAmt>16469689</NetAssetsOrFundBalancesBOYAmt>
      <NetAssetsOrFundBalancesEOYAmt>13335562</NetAssetsOrFundBalancesEOYAmt>
      <InfoInScheduleOPartIIIInd>X</InfoInScheduleOPartIIIInd>
      <MissionDesc>THE AMERICAN ASTRONOMICAL SOCIETY (AAS), ESTABLISHED IN 1899, IS THE MAJOR ORGANIZATION OF PROFESSIONAL ASTRONOMERS IN NORTH AMERICA. THE BASIC OBJECTIVE OF THE AAS IS TO PROMOTE THE ADVANCEMENT OF ASTRONOMY AND CLOSELY RELATED BRANCHES OF SCIENCE THE MEMBERSHIP (APPROXIMATELY 7,000) ALSO INCLUDES PHYSICISTS, MATHEMATICIANS, GEOLOGISTS, ENGINEERS AND OTHERS WHOSE RESEARCH INTERESTS LIE WITHIN THE BROAD SPECTRUM OF SUBJECTS NOW COMPRISING CONTEMPORARY ASTRONOMY.</MissionDesc>
      <SignificantNewProgramSrvcInd>0</SignificantNewProgramSrvcInd>
      <SignificantChangeInd>0</SignificantChangeInd>
      <ExpenseAmt>6036410</ExpenseAmt>
      <RevenueAmt>9886170</RevenueAmt>
      <Desc>JOURNALS - WE PUBLISH THE ASTROPHYSICAL JOURNAL WHICH IS THE LEADING SCIENTIFIC JOURNAL IN ASTRONOMY AND ASTROPHYSICS IN THE WORLD. WE ALSO PUBLISH THE ASTROPHYSICAL SUPPLEMENT, LETTERS AND THE ASTRONOMICAL JOURNAL. OUR JOURNALS ARE THE LEADING SOURCE OF SCIENTIFIC CONTENT IN ASTRONOMY AND RELATED FIELDS. IN 2022, WE PUBLISHED OVER 74,000 PAGES OR 5,353 ARTICLES.</Desc>
      <ProgSrvcAccomActy2Grp>
        <ExpenseAmt>2333395</ExpenseAmt>
        <RevenueAmt>2647942</RevenueAmt>
        <Desc>MEETINGS - THE AAS HOLDS TWO MEETINGS PER YEAR IN ADDITION TO THE ANNUAL MEETING FOR THE SIX DIVISIONS OF THE AAS. THE MEETINGS SERVE AS A VENUE IN WHICH THE MEMBERS CAN SHARE SCIENTIFIC RESEARCH WITH OUR COMMUNITY. IN ADDITION TO FORMAL PRESENTATIONS, WE ENSURE THAT EVENTS ARE SCHEDULED TO FACILITATE THE SHARING OF INFORMATION AND IDEAS. IN 2022, WE CANCELLED OUR WINTER MEETING DUE TO THE COVID VARIANT. WE HAD OVER OVER 1,800 REGISTRANTS AT OUR SUMMER MEETING.</Desc>
      </ProgSrvcAccomActy2Grp>
      <ProgSrvcAccomActy3Grp>
        <ExpenseAmt>811810</ExpenseAmt>
        <Desc>MEMBERSHIP SERVICES - MAINTAIN MEMBERSHIP DATABASE AND THE AAS WEBSITE, PUBLISH ON-LINE NEWSLETTERS, PRINTED MEMBERSHIP DIRECTORIES AND AN ANNUAL PRINTED CALENDAR.</Desc>
      </ProgSrvcAccomActy3Grp>
      <ProgSrvcAccomActyOtherGrp>
        <ExpenseAmt>1024438</ExpenseAmt>
        <GrantAmt>1024438</GrantAmt>
        <Desc>GRANTS AND ASSISTANCE. IN 2022, THE SOCIETY ADMINISTERED THE INTERNATIONAL TRAVEL GRANT PROGRAM. THE SOCIETY ALSO PROVIDES GRANTS TO OTHER CHARITABLE ORGANIZATIONS, STUDENTS, EARLY CAREER MEMBERS, PRIZE WINNERS AND SCIENTIFIC EDITORS.</Desc>
      </ProgSrvcAccomActyOtherGrp>
      <ProgSrvcAccomActyOtherGrp>
        <ExpenseAmt>54920</ExpenseAmt>
        <Desc>EDUCATION AND OUTREACH: THE SOCIETY PROMOTES BROAD INTEREST IN ASTRONOMY, WHICH ENHANCES SCIENCE LITERACY AND LEAD MANY TO CAREERS IN SCIENCE AND ENGINEERING.</Desc>
      </ProgSrvcAccomActyOtherGrp>
      <ProgSrvcAccomActyOtherGrp>
        <ExpenseAmt>293695</ExpenseAmt>
        <Desc>JOB REGISTER: THE SOCIETY PUBLISHES A JOB REGISTER THAT ADVERTISES JOBS FOR INDIVIDUALS IN ASTRONOMY AND ASTROPHYSICS. THE JOBS POSTING ARE POSTED BY RESEARCH, COMMERCIAL, INDUSTRY, GOVERNMENT AND PUBLIC POLICY SECTOR ORGANIZATIONS. IN 2022, WE PUBLISHED 1,515 JOB ADVERTISEMENTS.</Desc>
      </ProgSrvcAccomActyOtherGrp>
      <ProgSrvcAccomActyOtherGrp>
        <ExpenseAmt>293300</ExpenseAmt>
        <Desc>PUBLIC POLICY AND LOBBYING: THE SOCIETY WORKS WITH OTHER SCIENTIFIC AND EDUCATIONAL SOCIETIES TO PROMOTE THE ADVANCEMENT OF SOCIETY.</Desc>
      </ProgSrvcAccomActyOtherGrp>
      <ProgSrvcAccomActyOtherGrp>
        <ExpenseAmt>149299</ExpenseAmt>
        <Desc>STRATEGIC INITIATIVES: SOCIETY-WIDE PROJECTS THAT IMPROVE THE OPERTATIONS OF THE SOCIETY AND PROJECTS THAT ARE CENTRAL TO THE MISSION OF THE AAS. THE CURRENT PROJECTS INCLUDE WEBSITE IMPROVEMENTS, ASTRONOMY AMBASSADOR PROGRAM AND THE ORAL HISTORY PROJECT. THESE PROJECTS ARE FUNDED BY COUNCIL-APPROVED TRANSFERS FROM THE JOURNALS PROGRAM.</Desc>
      </ProgSrvcAccomActyOtherGrp>
      <ProgSrvcAccomActyOtherGrp>
        <ExpenseAmt>5055536</ExpenseAmt>
        <RevenueAmt>2286828</RevenueAmt>
        <Desc>SKY AND TELESCOPE: THE SKY AND TELESCOPE LINE OF BUSINESSES INCLUDE SKY AND TELESCOPE MAGAZINE WHICH IS PUBLISHED MONTHLY, AN ONLINE STORE SHOPATSKY.ORG AND A TOUR BUSINESS.</Desc>
      </ProgSrvcAccomActyOtherGrp>
      <TotalOtherProgSrvcExpenseAmt>6871188</TotalOtherProgSrvcExpenseAmt>
      <TotalOtherProgSrvcGrantAmt>1024438</TotalOtherProgSrvcGrantAmt>
      <TotalOtherProgSrvcRevenueAmt>2286828</TotalOtherProgSrvcRevenueAmt>
      <TotalProgramServiceExpensesAmt>16052803</TotalProgramServiceExpensesAmt>
      <DescribedInSection501c3Ind referenceDocumentId="RetDoc1039100001">1</DescribedInSection501c3Ind>
      <ScheduleBRequiredInd referenceDocumentId="RetDoc1234500001">1</ScheduleBRequiredInd>
      <PoliticalCampaignActyInd referenceDocumentId="RetDoc1039700001">0</PoliticalCampaignActyInd>
      <LobbyingActivitiesInd referenceDocumentId="RetDoc1039700001">1</LobbyingActivitiesInd>
      <SubjectToProxyTaxInd referenceDocumentId="RetDoc1039700001">0</SubjectToProxyTaxInd>
      <DonorAdvisedFundInd referenceDocumentId="RetDoc1040000001">0</DonorAdvisedFundInd>
      <ConservationEasementsInd referenceDocumentId="RetDoc1040000001">0</ConservationEasementsInd>
      <CollectionsOfArtInd referenceDocumentId="RetDoc1040000001">0</CollectionsOfArtInd>
      <CreditCounselingInd referenceDocumentId="RetDoc1040000001">0</CreditCounselingInd>
      <DonorRstrOrQuasiEndowmentsInd>1</DonorRstrOrQuasiEndowmentsInd>
      <ReportLandBuildingEquipmentInd referenceDocumentId="RetDoc1040000001">1</ReportLandBuildingEquipmentInd>
      <ReportInvestmentsOtherSecInd referenceDocumentId="RetDoc1040000001">0</ReportInvestmentsOtherSecInd>
      <ReportProgramRelatedInvstInd referenceDocumentId="RetDoc1040000001">0</ReportProgramRelatedInvstInd>
      <ReportOtherAssetsInd referenceDocumentId="RetDoc1040000001">1</ReportOtherAssetsInd>
      <ReportOtherLiabilitiesInd referenceDocumentId="RetDoc1040000001">1</ReportOtherLiabilitiesInd>
      <IncludeFIN48FootnoteInd referenceDocumentId="RetDoc1040000001">1</IncludeFIN48FootnoteInd>
      <IndependentAuditFinclStmtInd referenceDocumentId="RetDoc1040000001">0</IndependentAuditFinclStmtInd>
      <ConsolidatedAuditFinclStmtInd referenceDocumentId="RetDoc1040000001">1</ConsolidatedAuditFinclStmtInd>
      <SchoolOperatingInd>0</SchoolOperatingInd>
      <ForeignOfficeInd>0</ForeignOfficeInd>
      <ForeignActivitiesInd referenceDocumentId="RetDoc1040500001">1</ForeignActivitiesInd>
      <MoreThan5000KToOrgInd referenceDocumentId="RetDoc1040500001">1</MoreThan5000KToOrgInd>
      <MoreThan5000KToIndividualsInd referenceDocumentId="RetDoc1040500001">1</MoreThan5000KToIndividualsInd>
      <ProfessionalFundraisingInd>0</ProfessionalFundraisingInd>
      <FundraisingActivitiesInd>0</FundraisingActivitiesInd>
      <GamingActivitiesInd>0</GamingActivitiesInd>
      <OperateHospitalInd>0</OperateHospitalInd>
      <GrantsToOrganizationsInd referenceDocumentId="RetDoc1041900001">1</GrantsToOrganizationsInd>
      <GrantsToIndividualsInd referenceDocumentId="RetDoc1041900001">1</GrantsToIndividualsInd>
      <ScheduleJRequiredInd referenceDocumentId="RetDoc1042400001">1</ScheduleJRequiredInd>
      <TaxExemptBondsInd>0</TaxExemptBondsInd>
      <EngagedInExcessBenefitTransInd>0</EngagedInExcessBenefitTransInd>
      <PYExcessBenefitTransInd>0</PYExcessBenefitTransInd>
      <LoanOutstandingInd>0</LoanOutstandingInd>
      <GrantToRelatedPersonInd>0</GrantToRelatedPersonInd>
      <BusinessRlnWithOrgMemInd>0</BusinessRlnWithOrgMemInd>
      <BusinessRlnWithFamMemInd>0</BusinessRlnWithFamMemInd>
      <BusinessRlnWith35CtrlEntInd>0</BusinessRlnWith35CtrlEntInd>
      <DeductibleNonCashContriInd>0</DeductibleNonCashContriInd>
      <DeductibleArtContributionInd>0</DeductibleArtContributionInd>
      <TerminateOperationsInd>0</TerminateOperationsInd>
      <PartialLiquidationInd>0</PartialLiquidationInd>
      <DisregardedEntityInd referenceDocumentId="RetDoc1043400001">0</DisregardedEntityInd>
      <RelatedEntityInd referenceDocumentId="RetDoc1043400001">1</RelatedEntityInd>
      <RelatedOrganizationCtrlEntInd>1</RelatedOrganizationCtrlEntInd>
      <TransactionWithControlEntInd referenceDocumentId="RetDoc1043400001">0</TransactionWithControlEntInd>
      <TrnsfrExmptNonChrtblRltdOrgInd referenceDocumentId="RetDoc1043400001">0</TrnsfrExmptNonChrtblRltdOrgInd>
      <ActivitiesConductedPrtshpInd referenceDocumentId="RetDoc1043400001">0</ActivitiesConductedPrtshpInd>
      <ScheduleORequiredInd>1</ScheduleORequiredInd>
      <IRPDocumentCnt>92</IRPDocumentCnt>
      <IRPDocumentW2GCnt>0</IRPDocumentW2GCnt>
      <BackupWthldComplianceInd>1</BackupWthldComplianceInd>
      <EmployeeCnt>51</EmployeeCnt>
      <EmploymentTaxReturnsFiledInd>1</EmploymentTaxReturnsFiledInd>
      <UnrelatedBusIncmOverLimitInd>1</UnrelatedBusIncmOverLimitInd>
      <Form990TFiledInd>1</Form990TFiledInd>
      <ForeignFinancialAccountInd>0</ForeignFinancialAccountInd>
      <ProhibitedTaxShelterTransInd>0</ProhibitedTaxShelterTransInd>
      <TaxablePartyNotificationInd>0</TaxablePartyNotificationInd>
      <NondeductibleContributionsInd>0</NondeductibleContributionsInd>
      <QuidProQuoContributionsInd>0</QuidProQuoContributionsInd>
      <Form8282PropertyDisposedOfInd>0</Form8282PropertyDisposedOfInd>
      <RcvFndsToPayPrsnlBnftCntrctInd>0</RcvFndsToPayPrsnlBnftCntrctInd>
      <PayPremiumsPrsnlBnftCntrctInd>0</PayPremiumsPrsnlBnftCntrctInd>
      <IndoorTanningServicesInd>0</IndoorTanningServicesInd>
      <SubjToTaxRmnrtnExPrchtPymtInd>0</SubjToTaxRmnrtnExPrchtPymtInd>
      <SubjectToExcsTaxNetInvstIncInd>0</SubjectToExcsTaxNetInvstIncInd>
      <InfoInScheduleOPartVIInd>X</InfoInScheduleOPartVIInd>
      <GoverningBodyVotingMembersCnt>11</GoverningBodyVotingMembersCnt>
      <IndependentVotingMemberCnt>10</IndependentVotingMemberCnt>
      <FamilyOrBusinessRlnInd>0</FamilyOrBusinessRlnInd>
      <DelegationOfMgmtDutiesInd>0</DelegationOfMgmtDutiesInd>
      <ChangeToOrgDocumentsInd>0</ChangeToOrgDocumentsInd>
      <MaterialDiversionOrMisuseInd>0</MaterialDiversionOrMisuseInd>
      <MembersOrStockholdersInd>1</MembersOrStockholdersInd>
      <ElectionOfBoardMembersInd>1</ElectionOfBoardMembersInd>
      <DecisionsSubjectToApprovaInd>0</DecisionsSubjectToApprovaInd>
      <MinutesOfGoverningBodyInd>1</MinutesOfGoverningBodyInd>
      <MinutesOfCommitteesInd>1</MinutesOfCommitteesInd>
      <OfficerMailingAddressInd>0</OfficerMailingAddressInd>
      <LocalChaptersInd>0</LocalChaptersInd>
      <Form990ProvidedToGvrnBodyInd>1</Form990ProvidedToGvrnBodyInd>
      <ConflictOfInterestPolicyInd>1</ConflictOfInterestPolicyInd>
      <AnnualDisclosureCoveredPrsnInd>1</AnnualDisclosureCoveredPrsnInd>
      <RegularMonitoringEnfrcInd>1</RegularMonitoringEnfrcInd>
      <WhistleblowerPolicyInd>1</WhistleblowerPolicyInd>
      <DocumentRetentionPolicyInd>1</DocumentRetentionPolicyInd>
      <CompensationProcessCEOInd>1</CompensationProcessCEOInd>
      <CompensationProcessOtherInd>1</CompensationProcessOtherInd>
      <InvestmentInJointVentureInd>0</InvestmentInJointVentureInd>
      <UponRequestInd>X</UponRequestInd>
      <BooksInCareOfDetail>
        <BusinessName>
          <BusinessNameLine1Txt>KEVIN MARVEL</BusinessNameLine1Txt>
        </BusinessName>
        <PhoneNum>5124713448</PhoneNum>
        <USAddress>
          <AddressLine1Txt>1667 K STREET NW SUITE 800</AddressLine1Txt>
          <CityNm>WASHINGTON</CityNm>
          <StateAbbreviationCd>DC</StateAbbreviationCd>
          <ZIPCd>20006</ZIPCd>
        </USAddress>
      </BooksInCareOfDetail>
      <Form990PartVIISectionAGrp>
        <PersonNm>KELSEY JOHNSON</PersonNm>
        <TitleTxt>PRESIDENT</TitleTxt>
        <AverageHoursPerWeekRt>5.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>STEPHEN UNWIN</PersonNm>
        <TitleTxt>SENIOR VICE PRESIDENT</TitleTxt>
        <AverageHoursPerWeekRt>5.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>ADAM BURGASSER</PersonNm>
        <TitleTxt>SECOND VICE PRESIDENT</TitleTxt>
        <AverageHoursPerWeekRt>5.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>GRANT TREMBLAY</PersonNm>
        <TitleTxt>THIRD VICE PRESIDENT</TitleTxt>
        <AverageHoursPerWeekRt>5.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>DORIS DAOU</PersonNm>
        <TitleTxt>TREASURER</TitleTxt>
        <AverageHoursPerWeekRt>2.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>ALICE K B MONET</PersonNm>
        <TitleTxt>SECRETARY</TitleTxt>
        <AverageHoursPerWeekRt>10.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>40000</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>JANE RIGBY</PersonNm>
        <TitleTxt>AT-LARGE TRUSTEE</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>LOUIS-GREGORY STROGLER</PersonNm>
        <TitleTxt>AT-LARGE TRUSTEE</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>EDMUND BERTSCHINGER</PersonNm>
        <TitleTxt>AT-LARGE TRUSTEE</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>B ASHLEY ZAUDERER-VANDERLEY</PersonNm>
        <TitleTxt>AT-LARGE TRUSTEES</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>PAULA SZKODY - TERM ENDED</PersonNm>
        <TitleTxt>PAST PRESIDENT</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>GEOFFREY C CLAYTON - TERM ENDED</PersonNm>
        <TitleTxt>PRIOR SENIOR VICE PRESIDENT</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>MEGAN DONAHUE - TERM ENDED</PersonNm>
        <TitleTxt>PRIOR PAST PRESIDENT</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>MARCEL AGUEROS - TERM ENDED</PersonNm>
        <TitleTxt>PRIOR AT-LARGE TRUSTEE</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>KEVIN B MARVEL</PersonNm>
        <TitleTxt>EXECUTIVE OFFICER</TitleTxt>
        <AverageHoursPerWeekRt>35.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>455707</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>127130</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>JOEL PARRIOTT</PersonNm>
        <TitleTxt>DIRECTOR OF PUBLIC POLICY/</TitleTxt>
        <AverageHoursPerWeekRt>35.00</AverageHoursPerWeekRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>223444</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>27278</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>KELLY E CLARK</PersonNm>
        <TitleTxt>CHIEF FINANCIAL AND OPERAT</TitleTxt>
        <AverageHoursPerWeekRt>35.00</AverageHoursPerWeekRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>265087</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>36266</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>ETHAN VISHNIAC</PersonNm>
        <TitleTxt>EDITOR-IN-CHIEF</TitleTxt>
        <AverageHoursPerWeekRt>35.00</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>263975</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>48378</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>JULIE STEFFEN</PersonNm>
        <TitleTxt>DIRECTOR OF PUBLISHING</TitleTxt>
        <AverageHoursPerWeekRt>35.00</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>150229</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>36270</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>JANICE SEXTON</PersonNm>
        <TitleTxt>EDITORIAL OPERATIONS MANAGER</TitleTxt>
        <AverageHoursPerWeekRt>35.00</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>112815</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>21228</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>DIANE FRENDAK</PersonNm>
        <TitleTxt>DIRECTOR OF MEMBERSHIP SER</TitleTxt>
        <AverageHoursPerWeekRt>35.00</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>105797</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>43984</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>PETER TYSON</PersonNm>
        <TitleTxt>S&amp;T EDITOR IN CHIEF</TitleTxt>
        <AverageHoursPerWeekRt>35.00</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>114564</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>25689</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <TotalReportableCompFromOrgAmt>1731618</TotalReportableCompFromOrgAmt>
      <TotReportableCompRltdOrgAmt>0</TotReportableCompRltdOrgAmt>
      <TotalOtherCompensationAmt>366223</TotalOtherCompensationAmt>
      <IndivRcvdGreaterThan100KCnt>11</IndivRcvdGreaterThan100KCnt>
      <FormerOfcrEmployeesListedInd>0</FormerOfcrEmployeesListedInd>
      <TotalCompGreaterThan150KInd>1</TotalCompGreaterThan150KInd>
      <CompensationFromOtherSrcsInd>0</CompensationFromOtherSrcsInd>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>IOP PUBLISHING</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <ForeignAddress>
            <AddressLine1Txt>TEMPLE CIRCUS</AddressLine1Txt>
            <CityNm>TEMPLE WAY</CityNm>
            <ProvinceOrStateNm>BRISTOL</ProvinceOrStateNm>
            <CountryCd>UK</CountryCd>
            <ForeignPostalCd>BS1 6HG</ForeignPostalCd>
          </ForeignAddress>
        </ContractorAddress>
        <ServicesDesc>PUBLISHING CONSULTING</ServicesDesc>
        <CompensationAmt>1083374</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>LSC COMMUNICATIONS</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>3401 E HEARTLAND DR</AddressLine1Txt>
            <CityNm>LIBERTY</CityNm>
            <StateAbbreviationCd>MO</StateAbbreviationCd>
            <ZIPCd>64068</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>MAGAZINE PRODUCTION</ServicesDesc>
        <CompensationAmt>507525</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>CLEARVIEW CONSULTING INC</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>11155 RED RUN BOULEVARD SUITE 410</AddressLine1Txt>
            <CityNm>OWING MILLS</CityNm>
            <StateAbbreviationCd>MD</StateAbbreviationCd>
            <ZIPCd>21117</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>IT SERVICES</ServicesDesc>
        <CompensationAmt>308300</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>NORTHWESTERN UNIVERSITY</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>1918 SHERIDAN ROAD</AddressLine1Txt>
            <CityNm>EVANSTON</CityNm>
            <StateAbbreviationCd>IL</StateAbbreviationCd>
            <ZIPCd>60208</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>EDITORIAL SERVICES</ServicesDesc>
        <CompensationAmt>211476</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>JOHN WILEY &amp; SONS</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>111 RIVER STREET</AddressLine1Txt>
            <CityNm>HOBOKEN</CityNm>
            <StateAbbreviationCd>NJ</StateAbbreviationCd>
            <ZIPCd>07030</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>MANUSCRIPT PROCESSING</ServicesDesc>
        <CompensationAmt>166928</CompensationAmt>
      </ContractorCompensationGrp>
      <CntrctRcvdGreaterThan100KCnt>6</CntrctRcvdGreaterThan100KCnt>
      <MembershipDuesAmt>1092483</MembershipDuesAmt>
      <GovernmentGrantsAmt>600348</GovernmentGrantsAmt>
      <AllOtherContributionsAmt>129117</AllOtherContributionsAmt>
      <TotalContributionsAmt>1821948</TotalContributionsAmt>
      <ProgramServiceRevenueGrp>
        <Desc>JOURNALS</Desc>
        <BusinessCd>561300</BusinessCd>
        <TotalRevenueColumnAmt>10664453</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>9886170</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>778283</UnrelatedBusinessRevenueAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>MEETINGS</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>2647942</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>2647942</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>S&amp;T MAGAZINES AND TOURS</Desc>
        <BusinessCd>561300</BusinessCd>
        <TotalRevenueColumnAmt>2151339</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>1874150</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>277189</UnrelatedBusinessRevenueAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>S&amp;T STORE SALES</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>412678</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>412678</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <TotalProgramServiceRevenueAmt>15876412</TotalProgramServiceRevenueAmt>
      <InvestmentIncomeGrp>
        <TotalRevenueColumnAmt>257602</TotalRevenueColumnAmt>
        <ExclusionAmt>257602</ExclusionAmt>
      </InvestmentIncomeGrp>
      <GrossAmountSalesAssetsGrp>
        <SecuritiesAmt>1129729</SecuritiesAmt>
      </GrossAmountSalesAssetsGrp>
      <LessCostOthBasisSalesExpnssGrp>
        <SecuritiesAmt>800875</SecuritiesAmt>
      </LessCostOthBasisSalesExpnssGrp>
      <GainOrLossGrp>
        <SecuritiesAmt>328854</SecuritiesAmt>
      </GainOrLossGrp>
      <NetGainOrLossInvestmentsGrp>
        <TotalRevenueColumnAmt>328854</TotalRevenueColumnAmt>
        <ExclusionAmt>328854</ExclusionAmt>
      </NetGainOrLossInvestmentsGrp>
      <OtherRevenueMiscGrp>
        <Desc>RENT TERMINATION</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>1203565</TotalRevenueColumnAmt>
        <ExclusionAmt>1203565</ExclusionAmt>
      </OtherRevenueMiscGrp>
      <OtherRevenueMiscGrp>
        <Desc>OTHER</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>53083</TotalRevenueColumnAmt>
        <ExclusionAmt>53083</ExclusionAmt>
      </OtherRevenueMiscGrp>
      <OtherRevenueTotalAmt>1256648</OtherRevenueTotalAmt>
      <TotalRevenueGrp>
        <TotalRevenueColumnAmt>19541464</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>14820940</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>1055472</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>1843104</ExclusionAmt>
      </TotalRevenueGrp>
      <GrantsToDomesticOrgsGrp>
        <TotalAmt>81729</TotalAmt>
        <ProgramServicesAmt>81729</ProgramServicesAmt>
      </GrantsToDomesticOrgsGrp>
      <GrantsToDomesticIndividualsGrp>
        <TotalAmt>890879</TotalAmt>
        <ProgramServicesAmt>890879</ProgramServicesAmt>
      </GrantsToDomesticIndividualsGrp>
      <ForeignGrantsGrp>
        <TotalAmt>51830</TotalAmt>
        <ProgramServicesAmt>51830</ProgramServicesAmt>
      </ForeignGrantsGrp>
      <CompCurrentOfcrDirectorsGrp>
        <TotalAmt>1146274</TotalAmt>
        <ProgramServicesAmt>931276</ProgramServicesAmt>
        <ManagementAndGeneralAmt>214998</ManagementAndGeneralAmt>
      </CompCurrentOfcrDirectorsGrp>
      <OtherSalariesAndWagesGrp>
        <TotalAmt>5552152</TotalAmt>
        <ProgramServicesAmt>4642890</ProgramServicesAmt>
        <ManagementAndGeneralAmt>909262</ManagementAndGeneralAmt>
      </OtherSalariesAndWagesGrp>
      <PensionPlanContributionsGrp>
        <TotalAmt>430158</TotalAmt>
        <ProgramServicesAmt>286543</ProgramServicesAmt>
        <ManagementAndGeneralAmt>143615</ManagementAndGeneralAmt>
      </PensionPlanContributionsGrp>
      <OtherEmployeeBenefitsGrp>
        <TotalAmt>709342</TotalAmt>
        <ProgramServicesAmt>639461</ProgramServicesAmt>
        <ManagementAndGeneralAmt>69881</ManagementAndGeneralAmt>
      </OtherEmployeeBenefitsGrp>
      <PayrollTaxesGrp>
        <TotalAmt>314663</TotalAmt>
        <ProgramServicesAmt>247841</ProgramServicesAmt>
        <ManagementAndGeneralAmt>66822</ManagementAndGeneralAmt>
      </PayrollTaxesGrp>
      <FeesForServicesManagementGrp>
        <TotalAmt>94122</TotalAmt>
        <ProgramServicesAmt>71686</ProgramServicesAmt>
        <ManagementAndGeneralAmt>22436</ManagementAndGeneralAmt>
      </FeesForServicesManagementGrp>
      <FeesForServicesLegalGrp>
        <TotalAmt>92344</TotalAmt>
        <ProgramServicesAmt>31784</ProgramServicesAmt>
        <ManagementAndGeneralAmt>60560</ManagementAndGeneralAmt>
      </FeesForServicesLegalGrp>
      <FeesForServicesAccountingGrp>
        <TotalAmt>66148</TotalAmt>
        <ProgramServicesAmt>46148</ProgramServicesAmt>
        <ManagementAndGeneralAmt>20000</ManagementAndGeneralAmt>
      </FeesForServicesAccountingGrp>
      <FeesForSrvcInvstMgmntFeesGrp>
        <TotalAmt>30470</TotalAmt>
        <ManagementAndGeneralAmt>30470</ManagementAndGeneralAmt>
      </FeesForSrvcInvstMgmntFeesGrp>
      <FeesForServicesOtherGrp>
        <TotalAmt>946106</TotalAmt>
        <ProgramServicesAmt>716081</ProgramServicesAmt>
        <ManagementAndGeneralAmt>230025</ManagementAndGeneralAmt>
      </FeesForServicesOtherGrp>
      <OfficeExpensesGrp>
        <TotalAmt>1646758</TotalAmt>
        <ProgramServicesAmt>1086197</ProgramServicesAmt>
        <ManagementAndGeneralAmt>560561</ManagementAndGeneralAmt>
      </OfficeExpensesGrp>
      <InformationTechnologyGrp>
        <TotalAmt>95539</TotalAmt>
        <ProgramServicesAmt>31316</ProgramServicesAmt>
        <ManagementAndGeneralAmt>64223</ManagementAndGeneralAmt>
      </InformationTechnologyGrp>
      <TravelGrp>
        <TotalAmt>450272</TotalAmt>
        <ProgramServicesAmt>374873</ProgramServicesAmt>
        <ManagementAndGeneralAmt>75399</ManagementAndGeneralAmt>
      </TravelGrp>
      <ConferencesMeetingsGrp>
        <TotalAmt>2158833</TotalAmt>
        <ProgramServicesAmt>2157844</ProgramServicesAmt>
        <ManagementAndGeneralAmt>989</ManagementAndGeneralAmt>
      </ConferencesMeetingsGrp>
      <DepreciationDepletionGrp>
        <TotalAmt>1215623</TotalAmt>
        <ProgramServicesAmt>177594</ProgramServicesAmt>
        <ManagementAndGeneralAmt>1038029</ManagementAndGeneralAmt>
      </DepreciationDepletionGrp>
      <InsuranceGrp>
        <TotalAmt>51120</TotalAmt>
        <ManagementAndGeneralAmt>51120</ManagementAndGeneralAmt>
      </InsuranceGrp>
      <OtherExpensesGrp>
        <Desc>JOURNAL PRODUCTION</Desc>
        <TotalAmt>1775803</TotalAmt>
        <ProgramServicesAmt>1775803</ProgramServicesAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>MAGAZINE PRODUCTION</Desc>
        <TotalAmt>1388880</TotalAmt>
        <ProgramServicesAmt>1388880</ProgramServicesAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>ONLINE STORE</Desc>
        <TotalAmt>269919</TotalAmt>
        <ProgramServicesAmt>269919</ProgramServicesAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>ATTRITION</Desc>
        <TotalAmt>175000</TotalAmt>
        <ManagementAndGeneralAmt>175000</ManagementAndGeneralAmt>
      </OtherExpensesGrp>
      <AllOtherExpensesGrp>
        <TotalAmt>152229</TotalAmt>
        <ProgramServicesAmt>152229</ProgramServicesAmt>
      </AllOtherExpensesGrp>
      <TotalFunctionalExpensesGrp>
        <TotalAmt>19786193</TotalAmt>
        <ProgramServicesAmt>16052803</ProgramServicesAmt>
        <ManagementAndGeneralAmt>3733390</ManagementAndGeneralAmt>
        <FundraisingAmt>0</FundraisingAmt>
      </TotalFunctionalExpensesGrp>
      <CashNonInterestBearingGrp>
        <BOYAmt>777555</BOYAmt>
        <EOYAmt>1217957</EOYAmt>
      </CashNonInterestBearingGrp>
      <SavingsAndTempCashInvstGrp>
        <BOYAmt>554117</BOYAmt>
        <EOYAmt>1315744</EOYAmt>
      </SavingsAndTempCashInvstGrp>
      <PledgesAndGrantsReceivableGrp>
        <BOYAmt>94002</BOYAmt>
        <EOYAmt>143638</EOYAmt>
      </PledgesAndGrantsReceivableGrp>
      <AccountsReceivableGrp>
        <BOYAmt>870674</BOYAmt>
        <EOYAmt>1445158</EOYAmt>
      </AccountsReceivableGrp>
      <InventoriesForSaleOrUseGrp>
        <BOYAmt>506843</BOYAmt>
        <EOYAmt>538025</EOYAmt>
      </InventoriesForSaleOrUseGrp>
      <PrepaidExpensesDefrdChargesGrp>
        <BOYAmt>474028</BOYAmt>
        <EOYAmt>1122627</EOYAmt>
      </PrepaidExpensesDefrdChargesGrp>
      <LandBldgEquipCostOrOtherBssAmt>2671223</LandBldgEquipCostOrOtherBssAmt>
      <LandBldgEquipAccumDeprecAmt>1714509</LandBldgEquipAccumDeprecAmt>
      <LandBldgEquipBasisNetGrp>
        <BOYAmt>929329</BOYAmt>
        <EOYAmt>956714</EOYAmt>
      </LandBldgEquipBasisNetGrp>
      <InvestmentsPubTradedSecGrp>
        <BOYAmt>14694166</BOYAmt>
        <EOYAmt>11220890</EOYAmt>
      </InvestmentsPubTradedSecGrp>
      <InvestmentsProgramRelatedGrp>
        <BOYAmt>91084</BOYAmt>
        <EOYAmt>39524</EOYAmt>
      </InvestmentsProgramRelatedGrp>
      <IntangibleAssetsGrp>
        <BOYAmt>2240126</BOYAmt>
        <EOYAmt>1344075</EOYAmt>
      </IntangibleAssetsGrp>
      <OtherAssetsTotalGrp>
        <BOYAmt>639253</BOYAmt>
        <EOYAmt>6913498</EOYAmt>
      </OtherAssetsTotalGrp>
      <TotalAssetsGrp>
        <BOYAmt>21871177</BOYAmt>
        <EOYAmt>26257850</EOYAmt>
      </TotalAssetsGrp>
      <AccountsPayableAccrExpnssGrp>
        <BOYAmt>780150</BOYAmt>
        <EOYAmt>1155398</EOYAmt>
      </AccountsPayableAccrExpnssGrp>
      <DeferredRevenueGrp>
        <BOYAmt>3246057</BOYAmt>
        <EOYAmt>3936450</EOYAmt>
      </DeferredRevenueGrp>
      <OtherLiabilitiesGrp>
        <BOYAmt>1375281</BOYAmt>
        <EOYAmt>7830440</EOYAmt>
      </OtherLiabilitiesGrp>
      <TotalLiabilitiesGrp>
        <BOYAmt>5401488</BOYAmt>
        <EOYAmt>12922288</EOYAmt>
      </TotalLiabilitiesGrp>
      <OrganizationFollowsFASB117Ind>X</OrganizationFollowsFASB117Ind>
      <NoDonorRestrictionNetAssetsGrp>
        <BOYAmt>11860767</BOYAmt>
        <EOYAmt>9380994</EOYAmt>
      </NoDonorRestrictionNetAssetsGrp>
      <DonorRestrictionNetAssetsGrp>
        <BOYAmt>4608922</BOYAmt>
        <EOYAmt>3954568</EOYAmt>
      </DonorRestrictionNetAssetsGrp>
      <TotalNetAssetsFundBalanceGrp>
        <BOYAmt>16469689</BOYAmt>
        <EOYAmt>13335562</EOYAmt>
      </TotalNetAssetsFundBalanceGrp>
      <TotLiabNetAssetsFundBalanceGrp>
        <BOYAmt>21871177</BOYAmt>
        <EOYAmt>26257850</EOYAmt>
      </TotLiabNetAssetsFundBalanceGrp>
      <InfoInScheduleOPartXIInd>X</InfoInScheduleOPartXIInd>
      <ReconcilationRevenueExpnssAmt>-244729</ReconcilationRevenueExpnssAmt>
      <NetUnrlzdGainsLossesInvstAmt>-2927838</NetUnrlzdGainsLossesInvstAmt>
      <OtherChangesInNetAssetsAmt>38440</OtherChangesInNetAssetsAmt>
      <InfoInScheduleOPartXIIInd>X</InfoInScheduleOPartXIIInd>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>0</AccountantCompileOrReviewInd>
      <FSAuditedInd>1</FSAuditedInd>
      <FSAuditedBasisGrp>
        <ConsolidatedBasisFinclStmtInd>X</ConsolidatedBasisFinclStmtInd>
      </FSAuditedBasisGrp>
      <AuditCommitteeInd>1</AuditCommitteeInd>
      <FederalGrantAuditRequiredInd>0</FederalGrantAuditRequiredInd>
    </IRS990>
    <IRS990ScheduleA documentId="RetDoc1039100001">
      <PublicOrganization170Ind>X</PublicOrganization170Ind>
      <GiftsGrantsContriRcvd170Grp>
        <CurrentTaxYearMinus4YearsAmt>1664618</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>1511955</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>1579374</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>2174277</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>1823353</CurrentTaxYearAmt>
        <TotalAmt>8753577</TotalAmt>
      </GiftsGrantsContriRcvd170Grp>
      <TotalCalendarYear170Grp>
        <CurrentTaxYearMinus4YearsAmt>1664618</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>1511955</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>1579374</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>2174277</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>1823353</CurrentTaxYearAmt>
        <TotalAmt>8753577</TotalAmt>
      </TotalCalendarYear170Grp>
      <SubstantialContributorsTotAmt>222087</SubstantialContributorsTotAmt>
      <PublicSupportTotal170Amt>8531490</PublicSupportTotal170Amt>
      <GrossInvestmentIncome170Grp>
        <CurrentTaxYearMinus4YearsAmt>271215</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>380953</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>291894</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>337447</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>256331</CurrentTaxYearAmt>
        <TotalAmt>1537840</TotalAmt>
      </GrossInvestmentIncome170Grp>
      <UnrelatedBusinessNetIncm170Grp>
        <CurrentTaxYearMinus4YearsAmt>365738</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>571639</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>538263</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>519511</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>548214</CurrentTaxYearAmt>
        <TotalAmt>2543365</TotalAmt>
      </UnrelatedBusinessNetIncm170Grp>
      <OtherIncome170Grp>
        <CurrentTaxYearMinus4YearsAmt>135547</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>184563</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>78003</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>41614</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>52367</CurrentTaxYearAmt>
        <TotalAmt>492094</TotalAmt>
      </OtherIncome170Grp>
      <TotalSupportAmt>13326876</TotalSupportAmt>
      <GrossReceiptsRltdActivitiesAmt>65005449</GrossReceiptsRltdActivitiesAmt>
      <PublicSupportCY170Pct>0.64020</PublicSupportCY170Pct>
      <PublicSupportPY170Pct>0.63140</PublicSupportPY170Pct>
      <ThirtyThrPctSuprtTestsCY170Ind>X</ThirtyThrPctSuprtTestsCY170Ind>
    </IRS990ScheduleA>
    <IRS990ScheduleB documentId="RetDoc1234500001">
      <ContributorInformationGrp>
        <ContributorNum>RESTRICTED</ContributorNum>
        <ContributorBusinessName>
          <BusinessNameLine1>RESTRICTED</BusinessNameLine1>
        </ContributorBusinessName>
        <ContributorUSAddress>
          <AddressLine1>RESTRICTED</AddressLine1>
          <AddressLine2>RESTRICTED</AddressLine2>
          <City>RESTRICTED</City>
          <State>RESTRICTED</State>
          <ZIPCode>RESTRICTED</ZIPCode>
        </ContributorUSAddress>
        <TotalContributionsAmt>RESTRICTED</TotalContributionsAmt>
      </ContributorInformationGrp>
    </IRS990ScheduleB>
    <IRS990ScheduleC documentId="RetDoc1039700001">
      <VolunteersInd>1</VolunteersInd>
      <PaidStaffOrManagementInd>1</PaidStaffOrManagementInd>
      <MediaAdvertisementsInd>0</MediaAdvertisementsInd>
      <MailingsMembersInd>1</MailingsMembersInd>
      <PublicationsOrBroadcastInd>0</PublicationsOrBroadcastInd>
      <GrantsOtherOrganizationsInd>0</GrantsOtherOrganizationsInd>
      <DirectContactLegislatorsInd>1</DirectContactLegislatorsInd>
      <DirectContactLegislatorsAmt>14061</DirectContactLegislatorsAmt>
      <RalliesDemonstrationsInd>0</RalliesDemonstrationsInd>
      <OtherActivitiesInd>0</OtherActivitiesInd>
      <TotalLobbyingExpendituresAmt>14061</TotalLobbyingExpendituresAmt>
      <NotDescribedSection501c3Ind>0</NotDescribedSection501c3Ind>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART II-B, LINE 1, LOBBYING ACTIVITIES:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE AAS ENGAGES IN LIMITED LOBBYING ACTIVITY, THE LARGEST EVENT BEING ONE DAY OF CONGRESSIONAL OFFICE VISITS BY AAS MEMBERS IN DC THAT OCCURS IN THE SPRING, IN WHICH AAS MEMBERS VISIT THE OFFICES OF THEIR SENATE AND HOUSE MEMBERS AND ADVOCATE FOR SCIENCE FUNDING. AAS ALSO FACILITATES MEMBER VISITS TO THEIR LOCAL CONGRESSIONAL OFFICES IN THE SUMMER RECESS. THE AAS ALSO SUBMITS WRITTEN TESTIMONY TO APPROPRIATIONS COMMITTEES IN THE SPRING FOR NASA AND THE NATIONAL SCIENCE FOUNDATION, AND LENDS OUR NAME TO COALITION LETTERS FOR INCREASED R&amp;D FUNDING OR OTHER BROAD SCIENCE POLICY OR SCIENCE EDUCATION TOPICS. SIMILARLY, AAS ASKS THEIR MEMBERS A FEW TIMES A YEAR TO CONTACT THEIR MEMBERS OF CONGRESS ON BUDGET OR OTHER ISSUES. ON RARE OCCASIONS, OTHER SPECIFIC ISSUES ARISE IN WHICH AAS STAFF MAKE CONTACTS WITH CONGRESSIONAL OR EXECUTIVE BRANCH STAFF TO EXPRESS THE OPINION OF THE SOCIETY.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleC>
    <IRS990ScheduleD documentId="RetDoc1040000001">
      <CYEndwmtFundGrp>
        <BeginningYearBalanceAmt>1849149</BeginningYearBalanceAmt>
        <ContributionsAmt>675</ContributionsAmt>
        <InvestmentEarningsOrLossesAmt>-249889</InvestmentEarningsOrLossesAmt>
        <OtherExpendituresAmt>4246</OtherExpendituresAmt>
        <EndYearBalanceAmt>1595689</EndYearBalanceAmt>
      </CYEndwmtFundGrp>
      <CYMinus1YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>1679348</BeginningYearBalanceAmt>
        <ContributionsAmt>1951</ContributionsAmt>
        <InvestmentEarningsOrLossesAmt>173235</InvestmentEarningsOrLossesAmt>
        <OtherExpendituresAmt>5385</OtherExpendituresAmt>
        <EndYearBalanceAmt>1849149</EndYearBalanceAmt>
      </CYMinus1YrEndwmtFundGrp>
      <CYMinus2YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>1255081</BeginningYearBalanceAmt>
        <ContributionsAmt>650</ContributionsAmt>
        <InvestmentEarningsOrLossesAmt>430762</InvestmentEarningsOrLossesAmt>
        <OtherExpendituresAmt>7145</OtherExpendituresAmt>
        <EndYearBalanceAmt>1679348</EndYearBalanceAmt>
      </CYMinus2YrEndwmtFundGrp>
      <CYMinus3YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>1003960</BeginningYearBalanceAmt>
        <InvestmentEarningsOrLossesAmt>270206</InvestmentEarningsOrLossesAmt>
        <OtherExpendituresAmt>19085</OtherExpendituresAmt>
        <EndYearBalanceAmt>1255081</EndYearBalanceAmt>
      </CYMinus3YrEndwmtFundGrp>
      <CYMinus4YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>1058903</BeginningYearBalanceAmt>
        <ContributionsAmt>1540</ContributionsAmt>
        <InvestmentEarningsOrLossesAmt>-38355</InvestmentEarningsOrLossesAmt>
        <OtherExpendituresAmt>18128</OtherExpendituresAmt>
        <EndYearBalanceAmt>1003960</EndYearBalanceAmt>
      </CYMinus4YrEndwmtFundGrp>
      <PrmnntEndowmentBalanceEOYPct>0.36000</PrmnntEndowmentBalanceEOYPct>
      <TermEndowmentBalanceEOYPct>0.64000</TermEndowmentBalanceEOYPct>
      <EndowmentsHeldUnrelatedOrgInd>0</EndowmentsHeldUnrelatedOrgInd>
      <EndowmentsHeldRelatedOrgInd>0</EndowmentsHeldRelatedOrgInd>
      <LeaseholdImprovementsGrp>
        <OtherCostOrOtherBasisAmt>785781</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>11801</DepreciationAmt>
        <BookValueAmt>773980</BookValueAmt>
      </LeaseholdImprovementsGrp>
      <EquipmentGrp>
        <OtherCostOrOtherBasisAmt>1877133</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>1694399</DepreciationAmt>
        <BookValueAmt>182734</BookValueAmt>
      </EquipmentGrp>
      <OtherLandBuildingsGrp>
        <OtherCostOrOtherBasisAmt>8309</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>8309</DepreciationAmt>
        <BookValueAmt>0</BookValueAmt>
      </OtherLandBuildingsGrp>
      <TotalBookValueLandBuildingsAmt>956714</TotalBookValueLandBuildingsAmt>
      <OtherAssetsOrgGrp>
        <Desc>DEFERRED COMPENSATION INVESTMENTS</Desc>
        <BookValueAmt>487904</BookValueAmt>
      </OtherAssetsOrgGrp>
      <OtherAssetsOrgGrp>
        <Desc>DEPOSITS</Desc>
        <BookValueAmt>243748</BookValueAmt>
      </OtherAssetsOrgGrp>
      <OtherAssetsOrgGrp>
        <Desc>RIGHT OF USE ASSET</Desc>
        <BookValueAmt>6181846</BookValueAmt>
      </OtherAssetsOrgGrp>
      <TotalBookValueOtherAssetsAmt>6913498</TotalBookValueOtherAssetsAmt>
      <OtherLiabilitiesOrgGrp>
        <Desc>DEFERRED COMPENSATION PAYABLE</Desc>
        <Amt>487904</Amt>
      </OtherLiabilitiesOrgGrp>
      <OtherLiabilitiesOrgGrp>
        <Desc>LEASE LIABILITY</Desc>
        <Amt>7342536</Amt>
      </OtherLiabilitiesOrgGrp>
      <TotalLiabilityAmt>7830440</TotalLiabilityAmt>
      <FootnoteTextInd>X</FootnoteTextInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART X, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE SOCIETY ACCOUNTS FOR THE EFFECT OF ANY UNCERTAIN TAX POSITIONS BASED ON A "MORE LIKELY THAN NOT" THRESHOLD TO THE RECOGNITION OF THE TAX POSITIONS BEING SUSTAINED BASED ON THE TECHNICAL MERITS OF THE POSITION UNDER SCRUTINY BY THE APPLICABLE TAXING AUTHORITY. IF A TAX POSITION OR POSITIONS ARE DEEMED TO RESULT IN UNCERTAINTIES OF THOSE POSITIONS, THE UNRECOGNIZED TAX EFFECT IS ESTIMATED BASED ON A "CUMULATIVE PROBABILITY ASSESSMENT" THAT AGGREGATES THE ESTIMATED TAX LIABILITY FOR UNCERTAIN TAX POSITIONS. INTEREST AND PENALTIES, IF ANY, ARE ACCRUED AS A COMPONENT OF GENERAL AND ADMINISTRATIVE EXPENSES WHEN ASSESSED. TAX YEARS PRIOR TO 2019 ARE NO LONGER SUBJECT TO EXAMINATION BY THE IRS OR THE TAX JURISDICTION OF THE DISTRICT OF COLUMBIA.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART V, LINE 4:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE SOCIETY CLASSIFIES AS ENDOWMENT FUNDS (A) THE ORIGINAL VALUE OF GIFTS DONATED TO THE PERMANENT ENDOWMENT, (B) THE ORIGINAL VALUE OF SUBSEQUENT GIFTS TO THE PERMANENT ENDOWMENT, AND (C) ACCUMULATIONS TO THE PERMANENT ENDOWMENT MADE IN ACCORDANCE WITH THE DIRECTION OF THE APPLICABLE DONOR GIFT INSTRUMENT AT THE TIME THE ACCUMULATION IS ADDED TO THE FUND. THE FUNDS ARE USED TO COVER THE SCIENTIFIC TALKS AT UNDERREPRESENTED MINORITY SERVING INSTITUTIONS AND ORGANIZATIONS.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleF documentId="RetDoc1040500001">
      <GrantRecordsMaintainedInd>1</GrantRecordsMaintainedInd>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>EUROPE (INCLUDING ICELAND &amp; GREENLAND) - ALBANIA, ANDORRA, AUSTRIA, BELGIUM</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>GRANTMAKING</TypeOfActivitiesConductedTxt>
        <RegionTotalExpendituresAmt>188982</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>SOUTH ASIA</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>GRANTMAKING</TypeOfActivitiesConductedTxt>
        <RegionTotalExpendituresAmt>17500</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>NORTH AMERICA</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>GRANTMAKING</TypeOfActivitiesConductedTxt>
        <RegionTotalExpendituresAmt>17500</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <SubtotalOfficesCnt>0</SubtotalOfficesCnt>
      <SubtotalEmployeesCnt>0</SubtotalEmployeesCnt>
      <ContinuationTotalOfficeCnt>0</ContinuationTotalOfficeCnt>
      <ContinuationTotalEmployeeCnt>0</ContinuationTotalEmployeeCnt>
      <TotalOfficeCnt>0</TotalOfficeCnt>
      <TotalEmployeeCnt>0</TotalEmployeeCnt>
      <SubtotalSpentAmt>223982</SubtotalSpentAmt>
      <ContinuationSpentAmt>0</ContinuationSpentAmt>
      <TotalSpentAmt>223982</TotalSpentAmt>
      <GrantsToOrgOutsideUSGrp>
        <RegionTxt>EUROPE (INCLUDING ICELAND &amp; GREENLAND) - ALBANIA, ANDORRA, AUSTRIA, BELGIUM</RegionTxt>
        <PurposeOfGrantTxt>STIPEND</PurposeOfGrantTxt>
        <CashGrantAmt>36164</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE TRANSFER</MannerOfCashDisbursementTxt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
      </GrantsToOrgOutsideUSGrp>
      <GrantsToOrgOutsideUSGrp>
        <RegionTxt>NORTH AMERICA</RegionTxt>
        <PurposeOfGrantTxt>STIPEND</PurposeOfGrantTxt>
        <CashGrantAmt>17500</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE TRANSFER</MannerOfCashDisbursementTxt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
      </GrantsToOrgOutsideUSGrp>
      <Total501c3OrgCnt>0</Total501c3OrgCnt>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>STIPEND</TypeOfAssistanceTxt>
        <RegionTxt>EUROPE (INCLUDING ICELAND &amp; GREENLAND) - ALBANIA, ANDORRA, AUSTRIA, BELGIU</RegionTxt>
        <RecipientCnt>8</RecipientCnt>
        <CashGrantAmt>141318</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE TRANSFER</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>STIPEND</TypeOfAssistanceTxt>
        <RegionTxt>SOUTH ASIA - AFGHANISTAN, BANGLADESH, BHUTAN, INDIA, MALDIVES, NEPAL,</RegionTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>17500</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE TRANSFER</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>PRIZE</TypeOfAssistanceTxt>
        <RegionTxt>EUROPE (INCLUDING ICELAND &amp; GREENLAND)</RegionTxt>
        <RecipientCnt>7</RecipientCnt>
        <CashGrantAmt>11500</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE TRANSFER</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <TransferToForeignCorpInd>0</TransferToForeignCorpInd>
      <InterestInForeignTrustInd>0</InterestInForeignTrustInd>
      <ForeignCorpOwnershipInd>0</ForeignCorpOwnershipInd>
      <PassiveForeignInvestmestCoInd>0</PassiveForeignInvestmestCoInd>
      <ForeignPartnershipInd>0</ForeignPartnershipInd>
      <BoycottCountriesInd>0</BoycottCountriesInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE INTERNATIONAL TRAVEL GRANT AND CHRETIEN RESEARCH GRANTS ARE TWO MAIN TYPES OF FOREIGN GRANTS. ONCE THE TRAVEL AND RESEARCH ARE COMPLETE, THE RECIPIENTS FILE A FINAL REPORT ON THE USE OF THE FUNDS AND THE RESEARCH THAT WAS AIDED BY THE FUNDS, INCLUDING ALL DOCUMENTATION OF EXPENSES. WE COLLECT ACKNOWLEDGEMENTS AND ALL ORIGINAL RECEIPTS FOR THE GRANT EXPENSES.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART III ACCOUNTING METHOD:</FormAndLineReferenceDesc>
      </SupplementalInformationDetail>
    </IRS990ScheduleF>
    <IRS990ScheduleI documentId="RetDoc1041900001">
      <GrantRecordsMaintainedInd>1</GrantRecordsMaintainedInd>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>ITHAKA</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>PO BOX 419654</AddressLine1Txt>
          <CityNm>BOSTON</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02241</ZIPCd>
        </USAddress>
        <RecipientEIN>133857105</RecipientEIN>
        <IRCSectionDesc>501(C)(3)</IRCSectionDesc>
        <CashGrantAmt>5460</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>PORTICO CONTRIBUTION-E-JOURNAL 2022</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>THE REGENTS OF THE UNIVERSITY OF CALIFORNIA</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>120 THEORY SUITE 200</AddressLine1Txt>
          <CityNm>IRVINE</CityNm>
          <StateAbbreviationCd>CA</StateAbbreviationCd>
          <ZIPCd>92697</ZIPCd>
        </USAddress>
        <RecipientEIN>943067788</RecipientEIN>
        <IRCSectionDesc>501(C)(3)</IRCSectionDesc>
        <CashGrantAmt>13269</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>OSTREBROCK PRIZE</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>SMITHSONIAN ASTROPHYSICS OBSERVATORY</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>60 GARDEN STREET</AddressLine1Txt>
          <CityNm>CAMBRIDGE</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02138</ZIPCd>
        </USAddress>
        <RecipientEIN>530206027</RecipientEIN>
        <IRCSectionDesc>501(C)(3)</IRCSectionDesc>
        <CashGrantAmt>23000</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>SE-LE STIPEND</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>JOHN HOPKINS UNIVERSITY</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>12529 COLLECTIONS CENTER DRIVE</AddressLine1Txt>
          <CityNm>CHICAGO</CityNm>
          <StateAbbreviationCd>IL</StateAbbreviationCd>
          <ZIPCd>60693</ZIPCd>
        </USAddress>
        <RecipientEIN>520595110</RecipientEIN>
        <IRCSectionDesc>501(C)(3)</IRCSectionDesc>
        <CashGrantAmt>30000</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>SE-LE STIPEND</PurposeOfGrantTxt>
      </RecipientTable>
      <Total501c3OrgCnt>4</Total501c3OrgCnt>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>DPS DISVISION EO</GrantTypeTxt>
        <RecipientCnt>4</RecipientCnt>
        <CashGrantAmt>4800</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>SOLAR PHYSICS DIVISION (STUDENTSHIP)</GrantTypeTxt>
        <RecipientCnt>2</RecipientCnt>
        <CashGrantAmt>2300</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>SOLAR PHYSICS DIVISION</GrantTypeTxt>
        <RecipientCnt>3</RecipientCnt>
        <CashGrantAmt>1830</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>BERKELY FUND</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>8000</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>DPS MASURSKY</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>1200</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>BROUWER PRIZE</GrantTypeTxt>
        <RecipientCnt>2</RecipientCnt>
        <CashGrantAmt>4000</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>DPS SAGAN</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>1200</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>HAD - DOGGET</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>1000</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>HEAD DISSERTION PRIZE</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>1000</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>HEAD EARLY CREER</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>1000</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>HEAD INNOVATION PRIZE</GrantTypeTxt>
        <RecipientCnt>2</RecipientCnt>
        <CashGrantAmt>3000</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>HEAD MID-CAREER PRIZE</GrantTypeTxt>
        <RecipientCnt>2</RecipientCnt>
        <CashGrantAmt>3000</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>HEAD SCHRAMM LECTURE PRIZE</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>1500</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>DOXSEY</GrantTypeTxt>
        <RecipientCnt>3</RecipientCnt>
        <CashGrantAmt>1200</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>KAVLI PRIZE</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>1500</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>LAD EARLY CAREER</GrantTypeTxt>
        <RecipientCnt>2</RecipientCnt>
        <CashGrantAmt>450</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>PIERCE</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>1500</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>EDUCATION EPECIAL PROJECT (EDP) GRANT</GrantTypeTxt>
        <RecipientCnt>11</RecipientCnt>
        <CashGrantAmt>13691</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>ROSSI PRIZE</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>1500</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>CANNON AWARD</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>1500</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>RUBIN PRIZE</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>1000</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>RUSSELL LECTURE FUND</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>3000</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>SPD-HALE</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>2000</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>TINSLEY PRIZE</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>2500</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>SPD GRANT (CHILDCARE GRANT)</GrantTypeTxt>
        <RecipientCnt>8</RecipientCnt>
        <CashGrantAmt>7000</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>WARNERN</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>1500</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>SE/SL STIPEND</GrantTypeTxt>
        <RecipientCnt>21</RecipientCnt>
        <CashGrantAmt>733242</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>FAMOUS TRAVEL GRANT</GrantTypeTxt>
        <RecipientCnt>23</RecipientCnt>
        <CashGrantAmt>17763</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>INTERNATIONAL TRAVEL GRANT</GrantTypeTxt>
        <RecipientCnt>31</RecipientCnt>
        <CashGrantAmt>47703</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>CHRETIEN GRANT</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>20000</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>WHEN GRANTS ARE AWARDED, THE RECIPIENT SIGNS AN ACKNOWLEDGEMENT THAT THE FUNDS WILL BE SPENT ONLY FOR THE INTENDED PURPOSE. ALL RECEIPTS ARE COLLECTED AND REVIEWED TO ENSURE COMPLIANCE.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleI>
    <IRS990ScheduleJ documentId="RetDoc1042400001">
      <CompensationCommitteeInd>X</CompensationCommitteeInd>
      <WrittenEmploymentContractInd>X</WrittenEmploymentContractInd>
      <CompensationSurveyInd>X</CompensationSurveyInd>
      <BoardOrCommitteeApprovalInd>X</BoardOrCommitteeApprovalInd>
      <SeverancePaymentInd>0</SeverancePaymentInd>
      <SupplementalNonqualRtrPlanInd>0</SupplementalNonqualRtrPlanInd>
      <EquityBasedCompArrngmInd>0</EquityBasedCompArrngmInd>
      <CompBasedOnRevenueOfFlngOrgInd>0</CompBasedOnRevenueOfFlngOrgInd>
      <CompBsdOnRevRelatedOrgsInd>0</CompBsdOnRevRelatedOrgsInd>
      <CompBsdNetEarnsFlngOrgInd>0</CompBsdNetEarnsFlngOrgInd>
      <CompBsdNetEarnsRltdOrgsInd>0</CompBsdNetEarnsRltdOrgsInd>
      <AnyNonFixedPaymentsInd>0</AnyNonFixedPaymentsInd>
      <InitialContractExceptionInd>0</InitialContractExceptionInd>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>KEVIN B MARVEL</PersonNm>
        <TitleTxt>EXECUTIVE OFFICER</TitleTxt>
        <BaseCompensationFilingOrgAmt>421054</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>34653</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>88437</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>43636</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>587780</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>JOEL PARRIOTT</PersonNm>
        <TitleTxt>DIRECTOR OF PUBLIC POLICY/</TitleTxt>
        <BaseCompensationFilingOrgAmt>222094</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>1350</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>22435</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>8935</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>254814</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>KELLY E CLARK</PersonNm>
        <TitleTxt>CHIEF FINANCIAL AND OPERAT</TitleTxt>
        <BaseCompensationFilingOrgAmt>251237</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>13850</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>25377</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>16665</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>307129</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>ETHAN VISHNIAC</PersonNm>
        <TitleTxt>EDITOR-IN-CHIEF</TitleTxt>
        <BaseCompensationFilingOrgAmt>263975</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>26890</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>22419</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>313284</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>JULIE STEFFEN</PersonNm>
        <TitleTxt>DIRECTOR OF PUBLISHING</TitleTxt>
        <BaseCompensationFilingOrgAmt>148879</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>1350</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>14782</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>22542</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>187553</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>DIANE FRENDAK</PersonNm>
        <TitleTxt>DIRECTOR OF MEMBERSHIP SER</TitleTxt>
        <BaseCompensationFilingOrgAmt>104447</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>1350</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>11191</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>33253</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>150241</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
    </IRS990ScheduleJ>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 6</FormAndLineReferenceDesc>
        <ExplanationTxt>THE AAS IS A SCIENTIFIC MEMBER SOCIETY FOR INDIVIDUALS THAT ARE ACTIVELY INVOLVED IN ASTRONOMY OR A RELATED BRANCH OF SCIENCE. THE SOCIETY HAS FULL, ASSOCIATE, INTERNATIONAL AFFILIATE, EDUCATION AFFILIATE, EMERITUS AND JUNIOR MEMBER MEMBERSHIP CLASSES. IN ORDER TO BECOME A MEMBER OF THE SOCIETY, AN INDIVIDUAL MUST HAVE TWO MEMBERS SPONSOR HIM/HER FOR MEMBERSHIP. IN ADDITION TO THE AAS MEMBER CLASSIFICATIONS, THE SIX DIVISIONS OF THE SOCIETY ALSO OFFER FULL, EMERITUS AND JUNIOR MEMBERSHIP CLASSES, DEPENDING ON THE DIVISION. CORPORATIONS AND OTHER ENTITIES DESIROUS OF ENCOURAGING THE WORK OF THE SOCIETY CAN ALSO BECOME CORPORATE MEMBERS. CORPORATE MEMBERS MUST BE APPROVED BY THE BOARD OF TRUSTEES.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 7A</FormAndLineReferenceDesc>
        <ExplanationTxt>THE GENERAL MEMBERSHIP ELECTS THE TRUSTEES OF THE SOCIETY. THE SLATE OF CANDIDATES FOR OFFICERS AND AT-LARGE TRUSTEES SHALL BE PREPARED BY THE NOMINATING COMMITTEE. AT LEAST TWO CANDIDATES SHALL BE PROPOSED BY THE NOMINATING COMMITTEE FOR ALL OFFICERS AND AT-LARGE TRUSTEES. MEMBERS OF THE NOMINATING COMMITTEE ARE INELIGIBLE FOR NOMINATION TO OFFICE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE AUDIT COMMITTEE AND THE TREASURER REVIEW AND APPROVE THE 990 PRIOR TO SUBMISSION. THE 990 IS ALSO DISTRIBUTED TO THE ENTIRE BOARD OF TRUSTEES AND PLACED ON THE AAS INTERNAL BOARD CONTENT MANAGEMENT SYSTEM.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION ESTABLISHED A CONFLICT OF INTEREST POLICY IN 2010. AS A RESULT OF THIS POLICY, THE ORGANIZATION MONITORS THE CONFLICT OF INTEREST POLICY THROUGH THE USE OF A CONFLICT QUESTIONNAIRE TO BE FILLED OUT ON AN ANNUAL BASIS BY AAS TRUSTEES AND STAFF.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15</FormAndLineReferenceDesc>
        <ExplanationTxt>THE EXECUTIVE OFFICER HAS AN ANNUAL REVIEW WITH A SUBCOMMITTEE SELECTED FROM THE OFFICERS OF THE SOCIETY. BOTH THIS SUBCOMMITTEE COMMITTEE AND THE EXECUTIVE OFFICER PREPARE WRITTEN MEMORANDUMS ON THE ANNUAL PERFORMANCE. THE SUBCOMMITTEE REVIEWS COMPENSATION REPORTS AND RECOMMENDS A SALARY INCREASE TO THE BOARD, WHICH THEY APPROVE. NON-SUPERVISORY EMPLOYEES ARE REVIEWED BY THEIR DIRECT MANAGER. THERE IS A WRITTEN PERFORMANCE REVIEW THAT IS PREPARED BY THE MANAGER AND SIGNED BY THE EMPLOYEE. SUPERVISORY EMPLOYEES ARE REVIEWED BY THE EXECUTIVE OFFICER AFTER ALL OTHER NON-SUPERVISORY EVALUATIONS ARE COMPLETED. THEY MEET AND DISCUSS THE PERFORMANCE OF THE SUPERVISORS AND THEIR SUBORDINATES' PERFORMANCE. BOTH THE EXECUTIVE OFFICER AND THE SUPERVISORY EMPLOYEE PREPARE WRITTEN PERFORMANCE REVIEWS, WHICH ARE SIGNED BY THE EMPLOYEE AND EXECUTIVE OFFICER. THE EXECUTIVE OFFICER THEN ASSESSES THE PERFORMANCE OF THE EMPLOYEES AND REVIEWS COMPENSATION DATA FROM OUR DEMOGRAPHIC AREA AND AWARDS INCREASES BASED ON THE INDIVIDUAL ASSESSMENTS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>ALL DOCUMENTS ARE AVAILABLE FOR PUBLIC VIEWING AT THE EXECUTIVE OFFICE. ADDITIONALLY, SUMMARIES OF ANNUAL AUDITS AND FINANCIAL REPORTS ARE AVAILABLE ON THE WEBSITE AS PART OF THE ANNUAL REPORT. WE ARE CURRENTLY MODIFYING OUR PROCEDURES FOR ENSURING THAT THE CONFLICT OF INTEREST STATEMENTS CAN BE MONITORED. THE AUDIT COMMITTEE OVERSEES THE AUDIT OF THE ORGANIZATION'S FINANCIAL STATEMENTS AND SELECTION OF AN INDEPENDENT ACCOUNTANT.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART XI, LINE 9:</FormAndLineReferenceDesc>
        <ExplanationTxt>EQUITY IN GAIN OF ACI 38,440.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART XII, LINE 2C:</FormAndLineReferenceDesc>
        <ExplanationTxt>NEITHER THE OVERSIGHT PROCESS NOR THE SELECTION PROCESS HAS CHANGED DURING THE CURRENT TAX YEAR.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
    <IRS990ScheduleR documentId="RetDoc1043400001">
      <IdDisregardedEntitiesGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>AAS SKY PUBLISHING LLC</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>1667 K STREET NW SUITE 800</AddressLine1Txt>
          <CityNm>WASHINGTON</CityNm>
          <StateAbbreviationCd>DC</StateAbbreviationCd>
          <ZIPCd>20006</ZIPCd>
        </USAddress>
        <EIN>320604609</EIN>
        <PrimaryActivitiesTxt>PUBLISHING SKY &amp; TELESCOPE MAGAZINE</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>DC</LegalDomicileStateCd>
        <TotalIncomeAmt>3743991</TotalIncomeAmt>
        <EndOfYearAssetsAmt>7925716</EndOfYearAssetsAmt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>AMERICAN ASTRONOMICAL SOCIETY</BusinessNameLine1Txt>
        </DirectControllingEntityName>
      </IdDisregardedEntitiesGrp>
      <IdRelatedOrgTxblCorpTrGrp>
        <RelatedOrganizationName>
          <BusinessNameLine1Txt>ASTRONOMYCOM INC</BusinessNameLine1Txt>
        </RelatedOrganizationName>
        <USAddress>
          <AddressLine1Txt>1667 K STREET NW SUITE 800</AddressLine1Txt>
          <CityNm>WASHINGTON</CityNm>
          <StateAbbreviationCd>DC</StateAbbreviationCd>
          <ZIPCd>20006</ZIPCd>
        </USAddress>
        <EIN>462405753</EIN>
        <PrimaryActivitiesTxt>PROVIDE SPEAKER PRESENTATION SYSTEM &amp; ON-SITE MEETING</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>DE</LegalDomicileStateCd>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>AMERICAN ASTRONOMICAL SOCIETY</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <EntityTypeTxt>C</EntityTypeTxt>
        <ShareOfTotalIncomeAmt>38440</ShareOfTotalIncomeAmt>
        <ShareOfEOYAssetsAmt>42139</ShareOfEOYAssetsAmt>
        <OwnershipPct>1.00000</OwnershipPct>
        <ControlledOrganizationInd>1</ControlledOrganizationInd>
      </IdRelatedOrgTxblCorpTrGrp>
      <ReceiptOfIntAnntsRntsRyltsInd>0</ReceiptOfIntAnntsRntsRyltsInd>
      <GiftGrntOrCapContriToOthOrgInd>0</GiftGrntOrCapContriToOthOrgInd>
      <GiftGrntCapContriFromOthOrgInd>0</GiftGrntCapContriFromOthOrgInd>
      <LoansOrGuaranteesToOtherOrgInd>0</LoansOrGuaranteesToOtherOrgInd>
      <LoansOrGuaranteesFromOthOrgInd>0</LoansOrGuaranteesFromOthOrgInd>
      <DivRelatedOrganizationInd>0</DivRelatedOrganizationInd>
      <AssetSaleToOtherOrgInd>0</AssetSaleToOtherOrgInd>
      <AssetPurchaseFromOtherOrgInd>0</AssetPurchaseFromOtherOrgInd>
      <AssetExchangeInd>0</AssetExchangeInd>
      <RentalOfFacilitiesToOthOrgInd>0</RentalOfFacilitiesToOthOrgInd>
      <RentalOfFcltsFromOthOrgInd>0</RentalOfFcltsFromOthOrgInd>
      <PerformOfServicesForOthOrgInd>0</PerformOfServicesForOthOrgInd>
      <PerformOfServicesByOtherOrgInd>0</PerformOfServicesByOtherOrgInd>
      <SharingOfFacilitiesInd>0</SharingOfFacilitiesInd>
      <PaidEmployeesSharingInd>0</PaidEmployeesSharingInd>
      <ReimbursementPaidToOtherOrgInd>0</ReimbursementPaidToOtherOrgInd>
      <ReimbursementPaidByOtherOrgInd>0</ReimbursementPaidByOtherOrgInd>
      <TransferToOtherOrgInd>0</TransferToOtherOrgInd>
      <TransferFromOtherOrgInd>0</TransferFromOtherOrgInd>
    </IRS990ScheduleR>
  </ReturnData>
</Return>
