Liabilities / Assets
15th percentile
Higher debt load relative to assets than 15% of similar nonprofits.
EIN 83-0802129 • 501(c)3 • Williams Bay, WI
Profile
Yerkes observatory advances humankind's understanding of the universe and our place within it, igniting curiosity, facilitating exploration and nurturing a deep sense of connection with our planet and each other.
Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.
Liabilities / Assets
15th percentile
Higher debt load relative to assets than 15% of similar nonprofits.
Liabilities / Revenue
16th percentile
Higher debt load relative to revenue than 16% of similar nonprofits.
Net Margin
83rd percentile
Higher net margin than 83% of similar nonprofits.
Top Officer Pay
Score unavailable
No filing with officer rows is available for this organization yet.
Asset Growth
67th percentile
Faster asset growth than 67% of similar nonprofits.
Revenue Growth
95th percentile
Faster revenue growth than 95% of similar nonprofits.
Assets
Up$15,723,931
Up $1,541,266 (+11%) from 2023
Liabilities
Up$146,553
Up $42,315 (+41%) from 2023
Net Assets
Up$15,577,378
Up $1,498,951 (+11%) from 2023
Revenue
Up$4,427,319
Up $2,650,075 (+149%) from 2023
Expenses
Up$2,936,571
Up $9,969 (+0.3%) from 2023
Net Income
Up$1,490,748
Up $2,640,106 (+230%) from 2023
Most recent year
2024 • Form 990Facts available. Structured filing facts are available, but richer extracted sections are limited.
To acquire, preserve, and protect the architectural treasure known as yerkes observatory and to keep it open to the public, foster its reputation as a symbol of scientific excellence, and continue programs of outreach & education in the areas of science & astronomy with particular emphasis on the youth.
Yerkes observatory advances humankind's understanding of the universe and our place within it, igniting curiosity, facilitating exploration and nurturing a deep sense of connection with our planet and each other.
| Line | Beginning | End | Change |
|---|---|---|---|
| Assets | |||
| Land, Buildings, and Equipment, Net | $8,942,765 | $8,895,363 | ▼ $47,402 |
| Cash and Non-Interest-Bearing Accounts | $3,093,530 | $5,273,811 | ▲ $2,180,281 |
| Pledges and Grants Receivable | $1,545,037 | $989,576 | ▼ $555,461 |
| Investments in Publicly Traded Securities | $134,315 | $148,559 | ▲ $14,244 |
| Accounts Receivable | $131,769 | $86,513 | ▼ $45,256 |
| Prepaid Expenses and Deferred Charges | $36,424 | $40,162 | ▲ $3,738 |
| Inventories for Sale or Use | $59,884 | $32,031 | ▼ $27,853 |
| Total Assets | $14,182,665 | $15,723,931 | ▲ $1,541,266 |
| Other Assets Total | $238,941 | $257,916 | ▲ $18,975 |
| Liabilities | |||
| Accounts Payable and Accrued Expenses | $86,218 | $127,087 | ▲ $40,869 |
| Deferred Revenue | $18,020 | $19,466 | ▲ $1,446 |
| Total Liabilities | $104,238 | $146,553 | ▲ $42,315 |
| Net Assets / Fund Balance | |||
| Net Assets Without Donor Restrictions | $10,882,015 | $10,664,008 | ▼ $218,007 |
| Net Assets With Donor Restrictions | $3,196,412 | $4,913,370 | ▲ $1,716,958 |
| Total Net Assets Fund Balance | $14,078,427 | $15,577,378 | ▲ $1,498,951 |
| Total Liabilities and Net Assets / Fund Balance | $14,182,665 | $15,723,931 | ▲ $1,541,266 |
| Asset | Book Value | Depreciation | Basis |
|---|---|---|---|
| Buildings | $6,120,500 | $343,454 | $6,463,954 |
| Land | $2,000,000 | - | $2,000,000 |
| Other Land Buildings | $414,535 | $120,635 | $535,170 |
| Equipment | $360,328 | $121,855 | $482,183 |
| Period | Beginning | Contrib. | Gain/Loss | Other Uses | End |
|---|---|---|---|---|---|
| 2024 | $123,726 | - | ▲ $13,428 | $11,735 | $123,726 |
| 2023 | $123,726 | - | ▲ $14,766 | $13,614 | $123,726 |
| 2022 | - | $123,726 | ▲ $8 | $8 | $123,726 |
| Name | Title | Full / Part Time | Base | Other | Total |
|---|---|---|---|---|---|
| Dennis Kois | Executive Director | FT | $221,292 | $22,578 | $243,870 |
| Amanda Bauer | Key Employee | FT | $187,395 | $42,044 | $229,439 |
| Name | Title |
|---|---|
| Dianna Colman | Chairman |
| Tom Nickols | Vice Chairman |
| Aaron Rankin | Director |
| Aimee Tanking | Director |
| Charles Ebeling | Director |
| Dana Hagenah | Director |
| David Krause | Director |
| Jeff Germanotta | Director |
| Joseph Madonia | Director |
| Julie Brandt | Director |
| Kate Lewis | Director |
| Mary Kilmer | Director |
| Michael Keefe | Director |
| Peter Strothman | Director |
| Robin Culbertson | Director |
| Frank Bonifacic | Secretary |
| William Brownell | Treasurer |
| Contractor | Services | Location | Compensation |
|---|---|---|---|
| Scathain LLC | Renovation Costs | 422 S 4TH ST, Milwaukee, WI 53204 | $112,500 |
| Contribution Type | Contribution Count | Reported Amount | Valuation Method |
|---|---|---|---|
| Securities Publicly Traded | 2 | $856,321 | Nasdq Trade Value |
| Other Non Cash Contri Table | 3 | $1,960 | Fair Market Value |
| Total Noncash Contributions | 5 | $858,281 | - |
| Line Item | Amount |
|---|---|
| Salaries, Compensation, and Employee Benefits | $1,605,484 |
| Other Expenses | $1,331,087 |
| Total Fundraising Expense | $418,033 |
| Grants and Similar Amounts Paid | $0 |
| Professional Fundraising Fees | $0 |
| Line Item | Program | Management | Fundraising | Total |
|---|---|---|---|---|
| Other Salaries and Wages | $620,742 | $87,277 | $122,842 | $830,861 |
| Current Officers, Directors, Trustees, and Key Employees | $235,210 | $119,049 | $119,050 | $473,309 |
| Fees for Services Other | $222,987 | $75,154 | $53,736 | $351,877 |
| Depreciation Depletion | $269,850 | - | - | $269,850 |
| Advertising | $111,192 | - | - | $111,192 |
| Pension Plan Contributions | $105,186 | - | - | $105,186 |
| Payroll Taxes | $67,097 | $15,365 | $18,190 | $100,652 |
| Other Employee Benefits | $19,426 | $37,993 | $38,057 | $95,476 |
| Office Expenses | $57,426 | $12,626 | $6,656 | $76,708 |
| Information Technology | $21,304 | $17,493 | $9,699 | $48,496 |
| Occupancy | $32,754 | $8,188 | - | $40,942 |
| Travel | $17,741 | $7,339 | $12,013 | $37,093 |
| Insurance | $11,344 | $20,382 | - | $31,726 |
| Other Expenses | $45,694 | $21,119 | $31,242 | $31,242 |
| All Other Expenses | $14,413 | $1,333 | $1,566 | $17,312 |
| Fees for Services Accounting | - | $10,250 | - | $10,250 |
| Conferences and Meetings | $1,661 | $1,661 | $4,982 | $8,304 |
| Fees for Services Lobbying | - | $3,150 | - | $3,150 |
| Fees for Service Investment Mgmnt Fees | $1,693 | - | - | $1,693 |
| Total Functional Expenses | $2,028,774 | $489,764 | $418,033 | $2,936,571 |
| Line Item | Amount |
|---|---|
| Total Expenses per Audited Statements | $2,980,503 |
| Total Expenses per Form 990 | $2,936,571 |
| Expenses per Audited Statements | $2,934,878 |
| Expenses Not Reported on Form 990 | $45,625 |
| Expenses Not Reported on Financial Statements | $1,693 |
| Line Item | Amount |
|---|---|
| Professional Fundraising Fees | $0 |
“Each board member is provided with a copy of the form 990 at a board meeting for review and approval.”
“Conflicts are reviewed regularly by board and staff if circumstances change.”
“The compensation of the organization's officer was determined using analysis obtained from independent consultation and board members, and included analyzing the compensations of officers in the same position at other organizations that operate similarly.”
“UPON REQUEST”
“Outside contract services: program service expenses 222,987. Management and general expenses 75,154. Fundraising expenses 44,363. Total expenses 342,504. Outside consultant services: program service expenses 0. Management and general expenses 0. Fundraising expenses 9,373. Total expenses 9,373.”
“The board of directors assumes oversight responsibility for the annual audit and responsibility for the selection of an independent auditor.”
“The organization has elected not to depreciate its art collection in accordance with accounting standards codification (asc) 958-360, property, plant, and equipment. Asc 958-360 permits not-for-profit entities to avoid depreciation for collections of works of art if certain conditions are met. The organization's policy is to maintain its collection in perpetuity, and as such, the useful lives of these assets are considered to be indefinite. The art collection is subject to regular maintenance and restoration to preserve its value, and, as a result, no depreciation expense has been recorded. The collection consists of a piece of art acquired during the year ended december 31, 2023. It is the organization's intent to acquire more pieces of art for its collection in the future. It is also the organization's belief that the art collection is held for the purpose of exhibition, education and further research of its mission. The collection is valued based on historical acquisition costs, which are $126,308 as of december 31, 2023. The total cost of the collection includes purchase prices and related costs incurred during acquisition, such as transportation and installation. The organization periodically assesses the collection for any significant changes in value. Any revaluation will be disclosed in the financial statements if material. It is the policy of the organization that should they sell collection objects, any financial proceeds realized shall be used solely for the acquisition of new collection items and/or the direct care of existing collections”
“The observatory holds collections required for ongoing contemporary astronomy research by astrophysicists and academics, relating to the history of the observatory and science used to interpret the observatory and astronomy for the general public, and of aesthetic interest for the engagement of the general public in understanding science, scientific process, astronomy and the landscape. All of these activities further our mission.”
“To further the organization's mission.”
“The organization is exempt from federal income tax under section 501(c)(3) of the u.s. Internal revenue code. The organization is not considered a private foundation by the internal revenue service. The organization does not consider any of its support and revenues to be unrelated business income and, accordingly, no provision for income taxes has been provided in the accompanying financial statements. The organization has implemented accounting for uncertainty in income taxes in accordance with u.s. Gaap. This standard describes a recognition threshold and measurement attribute for financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return and also provides guidance on various related matters such as derecognizing, interest, penalties and disclosures required. Management of the organization evaluates the uncertain tax positions taken, if any, and consults with outside counsel as deemed necessary. The organization recognizes interest and penalties, if any, related to unrecognized tax liabilities in income tax expense. In management's opinion, the organization has not taken any uncertain tax positions and, accordingly, has not reported a corresponding liability in the organization's financial statements.”
This appendix keeps the raw XML leaves available for debugging and edge-case review. The human report above is the primary experience.
| Path | # | Value |
|---|---|---|
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| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 127087 |
| IRS990/AccountsReceivableGrp/BOYAmt | 0 | 131769 |
| IRS990/AccountsReceivableGrp/EOYAmt | 0 | 86513 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | 0 |
| IRS990/ActivityOrMissionDesc | 0 | YERKES OBSERVATORY ADVANCES HUMANKIND'S UNDERSTANDING OF THE UNIVERSE AND OUR PLACE WITHIN IT, IGNITING CURIOSITY, FACILITATING EXPLORATION AND NURTURING A DEEP SENSE OF CONNECTION WITH OUR PLANET AND EACH OTHER. |
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| IRS990/AdvertisingGrp/TotalAmt | 0 | 111192 |
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| IRS990/AllOtherExpensesGrp/FundraisingAmt | 0 | 1566 |
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| IRS990/AllOtherExpensesGrp/ProgramServicesAmt | 0 | 14413 |
| IRS990/AllOtherExpensesGrp/TotalAmt | 0 | 17312 |
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| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | WILLIAMS BAY |
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| IRS990/DeferredRevenueGrp/EOYAmt | 0 | 19466 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | 0 |
| IRS990/DepreciationDepletionGrp/ProgramServicesAmt | 0 | 269850 |
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| IRS990/Desc | 0 | YERKES OBSERVATORY ADVANCES HUMANKIND'S UNDERSTANDING OF THE UNIVERSE AND OUR PLACE WITHIN IT, IGNITING CURIOSITY, FACILITATING EXPLORATION AND NURTURING A DEEP SENSE OF CONNECTION WITH OUR PLANET AND EACH OTHER. WE DOUBLED THE OPPORTUNITIES FOR K-12 CLASSROOMS TO VISIT THE OBSERVATORY & HELD OUR FIRST EDUCATOR PROFESSIONAL DEVELOPMENT SESSIONS. WE STARTED THE EXPLORING THE NIGHT SKY TOURS WHICH ALLOWS MEMBERS OF THE PUBLIC TO OBSERVE THROUGH THE WORLD'S LARGEST REFRACTING TELESCOPE AND WE HELD FOUR OPEN HOUSE EVENTS THAT ALL SOLD OUT, WITH OUR LARGEST ONE DURING THE APRIL 2024 SOLAR ECLIPSE. |
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| IRS990/Form990PartVIISectionAGrp/PersonNm | 12 | MARY KILMER |
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| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 13 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 14 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 15 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 16 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 17 | 232939 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 18 | 191110 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 13 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 14 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 15 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 16 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 17 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 18 | 0 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 0 | CHAIRMAN |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | VICE CHAIRMAN |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | SECRETARY |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | TREASURER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 9 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 10 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 11 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 12 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 13 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 14 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 15 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 16 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 17 | EXECUTIVE DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 18 | KEY EMPLOYEE |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | 1 |
| IRS990/FormationYr | 0 | 2018 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | 0 |
| IRS990/FSAuditedBasisGrp/SeparateBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | 1 |
| IRS990/FundraisingActivitiesInd | 0 | 0 |
| IRS990/GainOrLossGrp/SecuritiesAmt | 0 | -380 |
| IRS990/GamingActivitiesInd | 0 | 0 |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 15 |
| IRS990/GrantsToIndividualsInd | 0 | 0 |
| IRS990/GrantsToOrganizationsInd | 0 | 0 |
| IRS990/GrantToRelatedPersonInd | 0 | 0 |
| IRS990/GrossAmountSalesAssetsGrp/SecuritiesAmt | 0 | 870741 |
| IRS990/GrossReceiptsAmt | 0 | 5355214 |
| IRS990/GrossRentsGrp/RealAmt | 0 | 35710 |
| IRS990/GrossSalesOfInventoryAmt | 0 | 112910 |
| IRS990/GroupReturnForAffiliatesInd | 0 | 0 |
| IRS990/IncludeFIN48FootnoteInd | 0 | 1 |
| IRS990/IndependentAuditFinclStmtInd | 0 | 1 |
| IRS990/IndependentVotingMemberCnt | 0 | 15 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 2 |
| IRS990/IndoorTanningServicesInd | 0 | 0 |
| IRS990/InfoInScheduleOPartIXInd | 0 | X |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InfoInScheduleOPartXIIInd | 0 | X |
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| IRS990/InformationTechnologyGrp/ManagementAndGeneralAmt | 0 | 17493 |
| IRS990/InformationTechnologyGrp/ProgramServicesAmt | 0 | 21304 |
| IRS990/InformationTechnologyGrp/TotalAmt | 0 | 48496 |
| IRS990/InsuranceGrp/ManagementAndGeneralAmt | 0 | 20382 |
| IRS990/InsuranceGrp/ProgramServicesAmt | 0 | 11344 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 31726 |
| IRS990/InventoriesForSaleOrUseGrp/BOYAmt | 0 | 59884 |
| IRS990/InventoriesForSaleOrUseGrp/EOYAmt | 0 | 32031 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 192007 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 192007 |
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| IRS990/InvestmentsPubTradedSecGrp/BOYAmt | 0 | 134315 |
| IRS990/InvestmentsPubTradedSecGrp/EOYAmt | 0 | 148559 |
| IRS990/IRPDocumentCnt | 0 | 21 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 585944 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 8942765 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 8895363 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 9481307 |
| IRS990/LegalDomicileStateCd | 0 | WI |
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| IRS990/LessRentalExpensesGrp/RealAmt | 0 | 0 |
| IRS990/LoanOutstandingInd | 0 | 0 |
| IRS990/LobbyingActivitiesInd | 0 | 1 |
| IRS990/LocalChaptersInd | 0 | 0 |
| IRS990/MaterialDiversionOrMisuseInd | 0 | 0 |
| IRS990/MembershipDuesAmt | 0 | 68080 |
| IRS990/MembersOrStockholdersInd | 0 | 0 |
| IRS990/MethodOfAccountingAccrualInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | 1 |
| IRS990/MinutesOfGoverningBodyInd | 0 | 1 |
| IRS990/MissionDesc | 0 | YERKES OBSERVATORY ADVANCES HUMANKIND'S UNDERSTANDING OF THE UNIVERSE AND OUR PLACE WITHIN IT, IGNITING CURIOSITY, FACILITATING EXPLORATION AND NURTURING A DEEP SENSE OF CONNECTION WITH OUR PLANET AND EACH OTHER. |
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| IRS990/MoreThan5000KToOrgInd | 0 | 0 |
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| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 15577378 |
| IRS990/NetGainOrLossInvestmentsGrp/ExclusionAmt | 0 | -380 |
| IRS990/NetGainOrLossInvestmentsGrp/TotalRevenueColumnAmt | 0 | -380 |
| IRS990/NetIncomeOrLossGrp/RelatedOrExemptFuncIncomeAmt | 0 | 56136 |
| IRS990/NetIncomeOrLossGrp/TotalRevenueColumnAmt | 0 | 56136 |
| IRS990/NetRentalIncomeOrLossGrp/RelatedOrExemptFuncIncomeAmt | 0 | 35710 |
| IRS990/NetRentalIncomeOrLossGrp/TotalRevenueColumnAmt | 0 | 35710 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | 0 |
| IRS990/NetUnrlzdGainsLossesInvstAmt | 0 | 8203 |
| IRS990/NoDonorRestrictionNetAssetsGrp/BOYAmt | 0 | 10882015 |
| IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt | 0 | 10664008 |
| IRS990/NoncashContributionsAmt | 0 | 858281 |
| IRS990/NondeductibleContributionsInd | 0 | 0 |
| IRS990/OccupancyGrp/ManagementAndGeneralAmt | 0 | 8188 |
| IRS990/OccupancyGrp/ProgramServicesAmt | 0 | 32754 |
| IRS990/OccupancyGrp/TotalAmt | 0 | 40942 |
| IRS990/OfficeExpensesGrp/FundraisingAmt | 0 | 6656 |
| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 12626 |
| IRS990/OfficeExpensesGrp/ProgramServicesAmt | 0 | 57426 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 76708 |
| IRS990/OfficerMailingAddressInd | 0 | 0 |
| IRS990/OperateHospitalInd | 0 | 0 |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsFASB117Ind | 0 | X |
| IRS990/OtherAssetsTotalGrp/BOYAmt | 0 | 238941 |
| IRS990/OtherAssetsTotalGrp/EOYAmt | 0 | 257916 |
| IRS990/OtherChangesInNetAssetsAmt | 0 | 0 |
| IRS990/OtherEmployeeBenefitsGrp/FundraisingAmt | 0 | 38057 |
| IRS990/OtherEmployeeBenefitsGrp/ManagementAndGeneralAmt | 0 | 37993 |
| IRS990/OtherEmployeeBenefitsGrp/ProgramServicesAmt | 0 | 19426 |
| IRS990/OtherEmployeeBenefitsGrp/TotalAmt | 0 | 95476 |
| IRS990/OtherExpensesGrp/Desc | 0 | BUILDING MAINTENANCE |
| IRS990/OtherExpensesGrp/Desc | 1 | TOUR TICKETING AND OTHE |
| IRS990/OtherExpensesGrp/Desc | 2 | GROUNDS MAINTENANCE |
| IRS990/OtherExpensesGrp/Desc | 3 | FUNDRAISING SUPPLIES |
| IRS990/OtherExpensesGrp/FundraisingAmt | 0 | 31242 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 0 | 51385 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 1 | 21119 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 103950 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 69104 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 2 | 45694 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 155335 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 69104 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 66813 |
| IRS990/OtherExpensesGrp/TotalAmt | 3 | 31242 |
| IRS990/OtherRevenueMiscGrp/BusinessCd | 0 | 900099 |
| IRS990/OtherRevenueMiscGrp/Desc | 0 | MISCELLANEOUS REVENUE |
| IRS990/OtherRevenueMiscGrp/ExclusionAmt | 0 | 5789 |
| IRS990/OtherRevenueMiscGrp/TotalRevenueColumnAmt | 0 | 5789 |
| IRS990/OtherRevenueTotalAmt | 0 | 5789 |
| IRS990/OtherSalariesAndWagesGrp/FundraisingAmt | 0 | 122842 |
| IRS990/OtherSalariesAndWagesGrp/ManagementAndGeneralAmt | 0 | 87277 |
| IRS990/OtherSalariesAndWagesGrp/ProgramServicesAmt | 0 | 620742 |
| IRS990/OtherSalariesAndWagesGrp/TotalAmt | 0 | 830861 |
| IRS990/OtherWebsiteInd | 0 | X |
| IRS990/PartialLiquidationInd | 0 | 0 |
| IRS990/PayPremiumsPrsnlBnftCntrctInd | 0 | 0 |
| IRS990/PayrollTaxesGrp/FundraisingAmt | 0 | 18190 |
| IRS990/PayrollTaxesGrp/ManagementAndGeneralAmt | 0 | 15365 |
| IRS990/PayrollTaxesGrp/ProgramServicesAmt | 0 | 67097 |
| IRS990/PayrollTaxesGrp/TotalAmt | 0 | 100652 |
| IRS990/PensionPlanContributionsGrp/ProgramServicesAmt | 0 | 105186 |
| IRS990/PensionPlanContributionsGrp/TotalAmt | 0 | 105186 |
| IRS990/PledgesAndGrantsReceivableGrp/BOYAmt | 0 | 1545037 |
| IRS990/PledgesAndGrantsReceivableGrp/EOYAmt | 0 | 989576 |
| IRS990/PoliticalCampaignActyInd | 0 | 0 |
| IRS990/PrepaidExpensesDefrdChargesGrp/BOYAmt | 0 | 36424 |
| IRS990/PrepaidExpensesDefrdChargesGrp/EOYAmt | 0 | 40162 |
| IRS990/PrincipalOfficerNm | 0 | DIANNA COLMAN |
| IRS990/ProfessionalFundraisingInd | 0 | 0 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 0 | 561520 |
| IRS990/ProgramServiceRevenueGrp/Desc | 0 | TOUR REVENUE |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 0 | 434519 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 0 | 434519 |
| IRS990/ProgSrvcAccomActy2Grp/Desc | 0 | SCIENCE - IN 2024, WE HOSTED OUR SECOND UNDERGRADUATE SUMMER RESEARCH PROGRAM WHICH WELCOMED 3 STUDENTS FROM AROUND THE COUNTRY. WE ALSO WELCOMED ONE HIGH SCHOOL AND ONE MIDDLE SCHOOL INTERN TO WORK ON VARIOUS SCIENCE PROJECTS WITH STAFF. WE HIRED AN OBSERVING ASSISTANT AND A PROJECT SCIENTIST WHO HAS BEGUN MODIFICATIONS AND RESTORATION FOR THE 24 AND 41" REFLECTING TELESCOPES. WE ALSO HOSTED SEVERAL SUCCESSFUL AND PRODUCTIVE RESEARCH AND PROFESSIONAL WORKSHOPS AT YERKES OBSERVATORY, INCLUDING THE GALACTIC SCIENCE WITH THE NANCY GRACE ROMAN SPACE TELESCOPE WORKSHOP IN JUNE 2024. |
| IRS990/ProgSrvcAccomActy2Grp/ExpenseAmt | 0 | 611670 |
| IRS990/ProgSrvcAccomActy2Grp/RevenueAmt | 0 | 25773 |
| IRS990/ProgSrvcAccomActy3Grp/Desc | 0 | TOURS - YERKES FUTURE FOUNDATION OFFERS TOURS AND EVENTS, ASTRONOMY PROGRAMS FOR ALL AGES, AND CULTURAL AND SCIENCE PROGRAMMING TO PROVIDE ENRICHMENT THAT CONNECTS SCIENCE, LANDSCAPE AND CULTURE IN ORDER TO PROVIDE EDUCATIONAL OPPORTUNITIES FOR THE PUBLIC. |
| IRS990/ProgSrvcAccomActy3Grp/ExpenseAmt | 0 | 381204 |
| IRS990/ProgSrvcAccomActy3Grp/RevenueAmt | 0 | 408747 |
| IRS990/ProhibitedTaxShelterTransInd | 0 | 0 |
| IRS990/PYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/PYContributionsGrantsAmt | 0 | 1399527 |
| IRS990/PYExcessBenefitTransInd | 0 | 0 |
| IRS990/PYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/PYInvestmentIncomeAmt | 0 | 143989 |
| IRS990/PYOtherExpensesAmt | 0 | 1581890 |
| IRS990/PYOtherRevenueAmt | 0 | -84162 |
| IRS990/PYProgramServiceRevenueAmt | 0 | 317890 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | -1149358 |
| IRS990/PYSalariesCompEmpBnftPaidAmt | 0 | 1344712 |
| IRS990/PYTotalExpensesAmt | 0 | 2926602 |
| IRS990/PYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/PYTotalRevenueAmt | 0 | 1777244 |
| IRS990/QuidProQuoContributionsInd | 0 | 0 |
| IRS990/RcvFndsToPayPrsnlBnftCntrctInd | 0 | 0 |
| IRS990/ReconcilationRevenueExpnssAmt | 0 | 1490748 |
| IRS990/RegularMonitoringEnfrcInd | 0 | 1 |
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