Liabilities / Assets
13th percentile
Higher debt load relative to assets than 13% of similar nonprofits.
990 • Fiscal year 2023 • EIN 83-0802129
Precomputed percentiles for this filing year versus similar nonprofits in the same peer cohort.
Liabilities / Assets
13th percentile
Higher debt load relative to assets than 13% of similar nonprofits.
Liabilities / Revenue
20th percentile
Higher debt load relative to revenue than 20% of similar nonprofits.
Net Margin
5th percentile
Higher net margin than 5% of similar nonprofits.
Top Officer Pay
66th percentile
Higher top officer pay than 66% of similar nonprofits.
Top officer pay equals 13.2% of source-year revenue.
Asset Growth
11th percentile
Faster asset growth than 11% of similar nonprofits.
Revenue Growth
4th percentile
Faster revenue growth than 4% of similar nonprofits.
Assets
Down$14,182,665
Down $1,139,727 (-7.4%) from 2022
Net Assets
Down$14,078,427
Down $1,129,193 (-7.4%) from 2022
Liabilities
Down$104,238
Down $10,534 (-9.2%) from 2022
Revenue
Down$1,777,244
Down $3,016,390 (-63%) from 2022
Expenses
Up$2,926,602
Up $1,403,075 (+92%) from 2022
Net Income
Down-$1,149,358
Down $4,419,465 (-135%) from 2022
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 | $8,559,166 | $8,942,765 | ▲ $383,599 |
| Cash and Non-Interest-Bearing Accounts | $3,884,044 | $3,093,530 | ▼ $790,514 |
| Pledges and Grants Receivable | $2,283,479 | $1,545,037 | ▼ $738,442 |
| Investments in Publicly Traded Securities | $123,726 | $134,315 | ▲ $10,589 |
| Accounts Receivable | $163,993 | $131,769 | ▼ $32,224 |
| Inventories for Sale or Use | $32,065 | $59,884 | ▲ $27,819 |
| Prepaid Expenses and Deferred Charges | $97,464 | $36,424 | ▼ $61,040 |
| Total Assets | $15,322,392 | $14,182,665 | ▼ $1,139,727 |
| Other Assets Total | $178,455 | $238,941 | ▲ $60,486 |
| Liabilities | |||
| Accounts Payable and Accrued Expenses | $103,772 | $86,218 | ▼ $17,554 |
| Deferred Revenue | $11,000 | $18,020 | ▲ $7,020 |
| Total Liabilities | $114,772 | $104,238 | ▼ $10,534 |
| Net Assets / Fund Balance | |||
| Net Assets Without Donor Restrictions | $11,619,681 | $10,882,015 | ▼ $737,666 |
| Net Assets With Donor Restrictions | $3,587,939 | $3,196,412 | ▼ $391,527 |
| Total Net Assets Fund Balance | $15,207,620 | $14,078,427 | ▼ $1,129,193 |
| Total Liabilities and Net Assets / Fund Balance | $15,322,392 | $14,182,665 | ▼ $1,139,727 |
| Asset | Book Value | Depreciation | Basis |
|---|---|---|---|
| Buildings | $6,244,467 | $178,153 | $6,422,620 |
| Land | $2,000,000 | - | $2,000,000 |
| Equipment | $393,636 | $64,547 | $458,183 |
| Other Land Buildings | $304,662 | $73,394 | $378,056 |
| Period | Beginning | Contrib. | Gain/Loss | Other Uses | End |
|---|---|---|---|---|---|
| 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 | $212,734 | $22,335 | $235,069 |
| Amanda Bauer | Key Employee | FT | $178,435 | $29,505 | $207,940 |
| Name | Title |
|---|---|
| Dianna Colman | Chairman |
| Charles Ebeling | Vice Chairman |
| Amy Tanking | Director |
| Dana Hagenah | Director |
| Jeff Germanotta | Director |
| Joseph Madonia | Director |
| Kate Lewis | Director |
| Mary Kilmer | Director |
| Peter Strothman | Director |
| Robin Culbertson | Director |
| William Brownell | Director |
| Frank Bonifacic | Secretary |
| Tom Nickols | Treasurer |
| Contractor | Services | Location | Compensation |
|---|---|---|---|
| Marion Restoration | Renovation Costs | 3512 N KOSTNER AVE, Chicago, IL 60641 | $163,197 |
| Adams Electric | Renovation Costs | 801 N WISCONSIN ST, Elkhorn, WI 53121 | $154,052 |
| Blue Plate Catering INC | Event Expenses | 705 S HIGH POINT, Madison, WI 53719 | $146,531 |
| Luci Creative LLC | Stategic Planning | 6950 N CENTRAL PARK, Lincolnwood, IL 60712 | $144,445 |
| Campbell & Company | Fundraising | 1900 S LASALLE ST, Chicago, IL 60603 | $119,275 |
| Contribution Type | Contribution Count | Reported Amount | Valuation Method |
|---|---|---|---|
| Securities Publicly Traded | 4 | $240,701 | Nasdq Trade Value |
| Other Non Cash Contri Table | 7 | $5,188 | Fair Market Value |
| Total Noncash Contributions | 11 | $245,889 | - |
| Line Item | Amount |
|---|---|
| Other Expenses | $1,581,890 |
| Salaries, Compensation, and Employee Benefits | $1,344,712 |
| Total Fundraising Expense | $314,087 |
| Grants and Similar Amounts Paid | $0 |
| Professional Fundraising Fees | $0 |
| Line Item | Program | Management | Fundraising | Total |
|---|---|---|---|---|
| Other Salaries and Wages | $540,486 | $91,840 | $25,378 | $657,704 |
| Current Officers, Directors, Trustees, and Key Employees | $277,716 | $94,772 | $70,520 | $443,008 |
| Fees for Services Other | $227,297 | $3,450 | $121,189 | $351,936 |
| Depreciation Depletion | $248,779 | - | - | $248,779 |
| Advertising | $122,020 | - | - | $122,020 |
| Office Expenses | $73,569 | $11,915 | $22,311 | $107,795 |
| Payroll Taxes | $64,948 | $14,568 | $7,685 | $87,201 |
| Pension Plan Contributions | $82,652 | - | - | $82,652 |
| Other Expenses | $61,556 | $19,134 | - | $80,690 |
| Other Employee Benefits | $6,979 | $45,507 | $21,661 | $74,147 |
| Insurance | $50,654 | $2,798 | - | $53,452 |
| Occupancy | $42,020 | $10,505 | - | $52,525 |
| Information Technology | $29,935 | $5,997 | $15,345 | $51,277 |
| All Other Expenses | $6,826 | $3,882 | $22,725 | $33,433 |
| Travel | $9,459 | $7,271 | $6,057 | $22,787 |
| Fees for Services Accounting | - | $9,975 | - | $9,975 |
| Conferences and Meetings | $4,452 | $940 | $1,216 | $6,608 |
| Fees for Service Investment Mgmnt Fees | $1,152 | - | - | $1,152 |
| Total Functional Expenses | $2,248,828 | $363,687 | $314,087 | $2,926,602 |
| Line Item | Amount |
|---|---|
| Total Expenses per Audited Statements | $3,265,897 |
| Total Expenses per Form 990 | $2,926,602 |
| Expenses per Audited Statements | $2,925,450 |
| Expenses Not Reported on Form 990 | $340,447 |
| Expenses Not Reported on Financial Statements | $1,152 |
| Line Item | Amount |
|---|---|
| Fundraising Direct Expenses | $449,768 |
| Fundraising Gross Income | $286,900 |
| Professional Fundraising Fees | $0 |
| Event | Gross Receipts | Gross Revenue | Direct Expenses | Net Income |
|---|---|---|---|---|
| Annual Gala | $286,900 | $286,900 | $15,558 | $271,342 |
| Total Events | $286,900 | $286,900 | $449,768 | $-162,868 |
“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 227,297. Management and general expenses 3,450. Fundraising expenses 18,581. Total expenses 249,328. Outside consultant services: program service expenses 0. Management and general expenses 0. Fundraising expenses 102,608. Total expenses 102,608.”
“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.”
“Fundraising expenses included in the revenue section 296,393.”
“Fundraising expenses included in the revenue section 296,393.”
This appendix keeps the raw XML leaves available for debugging and edge-case review. The human report above is the primary experience.
| Path | # | Value |
|---|---|---|
| IRS990/AccountantCompileOrReviewInd | 0 | 0 |
| IRS990/AccountsPayableAccrExpnssGrp/BOYAmt | 0 | 103772 |
| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 86218 |
| IRS990/AccountsReceivableGrp/BOYAmt | 0 | 163993 |
| IRS990/AccountsReceivableGrp/EOYAmt | 0 | 131769 |
| 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. |
| IRS990/AdvertisingGrp/ProgramServicesAmt | 0 | 122020 |
| IRS990/AdvertisingGrp/TotalAmt | 0 | 122020 |
| IRS990/AllOtherContributionsAmt | 0 | 1342080 |
| IRS990/AllOtherExpensesGrp/FundraisingAmt | 0 | 22725 |
| IRS990/AllOtherExpensesGrp/ManagementAndGeneralAmt | 0 | 3882 |
| IRS990/AllOtherExpensesGrp/ProgramServicesAmt | 0 | 6826 |
| IRS990/AllOtherExpensesGrp/TotalAmt | 0 | 33433 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | 1 |
| IRS990/AuditCommitteeInd | 0 | 1 |
| IRS990/BackupWthldComplianceInd | 0 | 1 |
| IRS990/BooksInCareOfDetail/BusinessName/BusinessNameLine1Txt | 0 | PEG POLLITT |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 2623741978 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | PO BOX 346 |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | WILLIAMS BAY |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | WI |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 53191 |
| IRS990/BusinessRlnWith35CtrlEntInd | 0 | 0 |
| IRS990/BusinessRlnWithFamMemInd | 0 | 0 |
| IRS990/BusinessRlnWithOrgMemInd | 0 | 0 |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 3884044 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 3093530 |
| IRS990/ChangeToOrgDocumentsInd | 0 | 0 |
| IRS990/CntrctRcvdGreaterThan100KCnt | 0 | 7 |
| IRS990/CollectionsOfArtInd | 0 | 1 |
| IRS990/CompCurrentOfcrDirectorsGrp/FundraisingAmt | 0 | 70520 |
| IRS990/CompCurrentOfcrDirectorsGrp/ManagementAndGeneralAmt | 0 | 94772 |
| IRS990/CompCurrentOfcrDirectorsGrp/ProgramServicesAmt | 0 | 277716 |
| IRS990/CompCurrentOfcrDirectorsGrp/TotalAmt | 0 | 443008 |
| IRS990/CompensationFromOtherSrcsInd | 0 | 0 |
| IRS990/CompensationProcessCEOInd | 0 | 1 |
| IRS990/CompensationProcessOtherInd | 0 | 0 |
| IRS990/ConferencesMeetingsGrp/FundraisingAmt | 0 | 1216 |
| IRS990/ConferencesMeetingsGrp/ManagementAndGeneralAmt | 0 | 940 |
| IRS990/ConferencesMeetingsGrp/ProgramServicesAmt | 0 | 4452 |
| IRS990/ConferencesMeetingsGrp/TotalAmt | 0 | 6608 |
| IRS990/ConflictOfInterestPolicyInd | 0 | 1 |
| IRS990/ConservationEasementsInd | 0 | 0 |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | 0 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 0 | 163197 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 1 | 154052 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 2 | 146531 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 3 | 144445 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 4 | 119275 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 0 | 3512 N KOSTNER AVE |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 1 | 801 N WISCONSIN ST |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 2 | 705 S HIGH POINT |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 3 | 6950 N CENTRAL PARK |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 4 | 1900 S LASALLE ST |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 0 | CHICAGO |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 1 | ELKHORN |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 2 | MADISON |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 3 | LINCOLNWOOD |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 4 | CHICAGO |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 0 | IL |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 1 | WI |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 2 | WI |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 3 | IL |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 4 | IL |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 0 | 60641 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 1 | 53121 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 2 | 53719 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 3 | 60712 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 4 | 60603 |
| IRS990/ContractorCompensationGrp/ContractorName/BusinessName/BusinessNameLine1Txt | 0 | MARION RESTORATION |
| IRS990/ContractorCompensationGrp/ContractorName/BusinessName/BusinessNameLine1Txt | 1 | ADAMS ELECTRIC |
| IRS990/ContractorCompensationGrp/ContractorName/BusinessName/BusinessNameLine1Txt | 2 | BLUE PLATE CATERING INC |
| IRS990/ContractorCompensationGrp/ContractorName/BusinessName/BusinessNameLine1Txt | 3 | LUCI CREATIVE LLC |
| IRS990/ContractorCompensationGrp/ContractorName/BusinessName/BusinessNameLine1Txt | 4 | CAMPBELL & COMPANY |
| IRS990/ContractorCompensationGrp/ServicesDesc | 0 | RENOVATION COSTS |
| IRS990/ContractorCompensationGrp/ServicesDesc | 1 | RENOVATION COSTS |
| IRS990/ContractorCompensationGrp/ServicesDesc | 2 | EVENT EXPENSES |
| IRS990/ContractorCompensationGrp/ServicesDesc | 3 | STATEGIC PLANNING |
| IRS990/ContractorCompensationGrp/ServicesDesc | 4 | FUNDRAISING |
| IRS990/CostOfGoodsSoldAmt | 0 | 54484 |
| IRS990/CreditCounselingInd | 0 | 0 |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 1399527 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/CYInvestmentIncomeAmt | 0 | 143989 |
| IRS990/CYOtherExpensesAmt | 0 | 1581890 |
| IRS990/CYOtherRevenueAmt | 0 | -84162 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 317890 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | -1149358 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 1344712 |
| IRS990/CYTotalExpensesAmt | 0 | 2926602 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 314087 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 1777244 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | 0 |
| IRS990/DeductibleArtContributionInd | 0 | 0 |
| IRS990/DeductibleNonCashContriInd | 0 | 1 |
| IRS990/DeferredRevenueGrp/BOYAmt | 0 | 11000 |
| IRS990/DeferredRevenueGrp/EOYAmt | 0 | 18020 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | 0 |
| IRS990/DepreciationDepletionGrp/ProgramServicesAmt | 0 | 248779 |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 248779 |
| 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. |
| IRS990/DescribedInSection501c3Ind | 0 | 1 |
| IRS990/DisregardedEntityInd | 0 | 0 |
| IRS990/DocumentRetentionPolicyInd | 0 | 1 |
| IRS990/DonorAdvisedFundInd | 0 | 0 |
| IRS990/DonorRestrictionNetAssetsGrp/BOYAmt | 0 | 3587939 |
| IRS990/DonorRestrictionNetAssetsGrp/EOYAmt | 0 | 3196412 |
| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | 1 |
| IRS990/ElectionOfBoardMembersInd | 0 | 0 |
| IRS990/EmployeeCnt | 0 | 28 |
| IRS990/EmploymentTaxReturnsFiledInd | 0 | 1 |
| IRS990/EngagedInExcessBenefitTransInd | 0 | 0 |
| IRS990/ExpenseAmt | 0 | 1489891 |
| IRS990/FamilyOrBusinessRlnInd | 0 | 0 |
| IRS990/FederalGrantAuditRequiredInd | 0 | 0 |
| IRS990/FeesForServicesAccountingGrp/ManagementAndGeneralAmt | 0 | 9975 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 9975 |
| IRS990/FeesForServicesOtherGrp/FundraisingAmt | 0 | 121189 |
| IRS990/FeesForServicesOtherGrp/ManagementAndGeneralAmt | 0 | 3450 |
| IRS990/FeesForServicesOtherGrp/ProgramServicesAmt | 0 | 227297 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 351936 |
| IRS990/FeesForSrvcInvstMgmntFeesGrp/ProgramServicesAmt | 0 | 1152 |
| IRS990/FeesForSrvcInvstMgmntFeesGrp/TotalAmt | 0 | 1152 |
| IRS990/ForeignActivitiesInd | 0 | 0 |
| IRS990/ForeignFinancialAccountInd | 0 | 0 |
| IRS990/ForeignOfficeInd | 0 | 0 |
| IRS990/Form8282PropertyDisposedOfInd | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 5 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 6 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 7 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 8 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 9 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 10 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 11 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 12 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 13 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 14 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 4 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 5 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 6 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 7 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 8 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 9 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 10 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 11 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 12 | X |
| IRS990/Form990PartVIISectionAGrp/KeyEmployeeInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 4 | X |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 13 | 10702 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 14 | 28900 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | DIANNA COLMAN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | TOM NICKOLS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | FRANK BONIFACIC |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | WILLIAM BROWNELL |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | JOSEPH MADONIA |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | DANA HAGENAH |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | PETER STROTHMAN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | KATE LEWIS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | JEFF GERMANOTTA |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | ROBIN CULBERTSON |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 10 | CHARLES EBELING |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 11 | AMY TANKING |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 12 | MARY KILMER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 13 | DENNIS KOIS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 14 | AMANDA BAUER |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 3 | 0 |
| 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 | 224367 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 14 | 179040 |
| 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/TitleTxt | 0 | CHAIRMAN |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | TREASURER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | SECRETARY |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | DIRECTOR |
| 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 | VICE CHAIRMAN |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 11 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 12 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 13 | EXECUTIVE DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 14 | 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 | 1 |
| IRS990/FundraisingDirectExpensesAmt | 0 | 449768 |
| IRS990/FundraisingGrossIncomeAmt | 0 | 286900 |
| IRS990/GainOrLossGrp/OtherAmt | 0 | 7206 |
| IRS990/GainOrLossGrp/SecuritiesAmt | 0 | -328 |
| IRS990/GamingActivitiesInd | 0 | 0 |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 13 |
| IRS990/GrantsToIndividualsInd | 0 | 0 |
| IRS990/GrantsToOrganizationsInd | 0 | 0 |
| IRS990/GrantToRelatedPersonInd | 0 | 0 |
| IRS990/GrossAmountSalesAssetsGrp/OtherAmt | 0 | 41000 |
| IRS990/GrossAmountSalesAssetsGrp/SecuritiesAmt | 0 | 42775 |
| IRS990/GrossReceiptsAmt | 0 | 2358393 |
| IRS990/GrossRentsGrp/RealAmt | 0 | 27802 |
| IRS990/GrossSalesOfInventoryAmt | 0 | 96905 |
| IRS990/GroupReturnForAffiliatesInd | 0 | 0 |
| IRS990/IncludeFIN48FootnoteInd | 0 | 1 |
| IRS990/IndependentAuditFinclStmtInd | 0 | 1 |
| IRS990/IndependentVotingMemberCnt | 0 | 13 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 2 |
| IRS990/IndoorTanningServicesInd | 0 | 0 |
| IRS990/InfoInScheduleOPartIXInd | 0 | X |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InfoInScheduleOPartXIIInd | 0 | X |
| IRS990/InformationTechnologyGrp/FundraisingAmt | 0 | 15345 |
| IRS990/InformationTechnologyGrp/ManagementAndGeneralAmt | 0 | 5997 |
| IRS990/InformationTechnologyGrp/ProgramServicesAmt | 0 | 29935 |
| IRS990/InformationTechnologyGrp/TotalAmt | 0 | 51277 |
| IRS990/InsuranceGrp/ManagementAndGeneralAmt | 0 | 2798 |
| IRS990/InsuranceGrp/ProgramServicesAmt | 0 | 50654 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 53452 |
| IRS990/InventoriesForSaleOrUseGrp/BOYAmt | 0 | 32065 |
| IRS990/InventoriesForSaleOrUseGrp/EOYAmt | 0 | 59884 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 137111 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 137111 |
| IRS990/InvestmentInJointVentureInd | 0 | 0 |
| IRS990/InvestmentsPubTradedSecGrp/BOYAmt | 0 | 123726 |
| IRS990/InvestmentsPubTradedSecGrp/EOYAmt | 0 | 134315 |
| IRS990/IRPDocumentCnt | 0 | 36 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 316094 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 8559166 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 8942765 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 9258859 |
| IRS990/LegalDomicileStateCd | 0 | WI |
| IRS990/LessCostOthBasisSalesExpnssGrp/OtherAmt | 0 | 33794 |
| IRS990/LessCostOthBasisSalesExpnssGrp/SecuritiesAmt | 0 | 43103 |
| IRS990/LessRentalExpensesGrp/RealAmt | 0 | 0 |
| IRS990/LoanOutstandingInd | 0 | 0 |
| IRS990/LobbyingActivitiesInd | 0 | 0 |
| IRS990/LocalChaptersInd | 0 | 0 |
| IRS990/MaterialDiversionOrMisuseInd | 0 | 0 |
| IRS990/MembershipDuesAmt | 0 | 57447 |
| 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. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | 0 |
| IRS990/MoreThan5000KToOrgInd | 0 | 0 |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 15207620 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 14078427 |
| IRS990/NetGainOrLossInvestmentsGrp/ExclusionAmt | 0 | 6878 |
| IRS990/NetGainOrLossInvestmentsGrp/TotalRevenueColumnAmt | 0 | 6878 |
| IRS990/NetIncmFromFundraisingEvtGrp/ExclusionAmt | 0 | -162868 |
| IRS990/NetIncmFromFundraisingEvtGrp/TotalRevenueColumnAmt | 0 | -162868 |
| IRS990/NetIncomeOrLossGrp/RelatedOrExemptFuncIncomeAmt | 0 | 42421 |
| IRS990/NetIncomeOrLossGrp/TotalRevenueColumnAmt | 0 | 42421 |
| IRS990/NetRentalIncomeOrLossGrp/RelatedOrExemptFuncIncomeAmt | 0 | 27802 |
| IRS990/NetRentalIncomeOrLossGrp/TotalRevenueColumnAmt | 0 | 27802 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | 0 |
| IRS990/NetUnrlzdGainsLossesInvstAmt | 0 | 20165 |
| IRS990/NoDonorRestrictionNetAssetsGrp/BOYAmt | 0 | 11619681 |
| IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt | 0 | 10882015 |
| IRS990/NoncashContributionsAmt | 0 | 245889 |
| IRS990/NondeductibleContributionsInd | 0 | 0 |
| IRS990/OccupancyGrp/ManagementAndGeneralAmt | 0 | 10505 |
| IRS990/OccupancyGrp/ProgramServicesAmt | 0 | 42020 |
| IRS990/OccupancyGrp/TotalAmt | 0 | 52525 |
| IRS990/OfficeExpensesGrp/FundraisingAmt | 0 | 22311 |
| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 11915 |
| IRS990/OfficeExpensesGrp/ProgramServicesAmt | 0 | 73569 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 107795 |
| IRS990/OfficerMailingAddressInd | 0 | 0 |
| IRS990/OperateHospitalInd | 0 | 0 |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsFASB117Ind | 0 | X |
| IRS990/OtherAssetsTotalGrp/BOYAmt | 0 | 178455 |
| IRS990/OtherAssetsTotalGrp/EOYAmt | 0 | 238941 |
| IRS990/OtherChangesInNetAssetsAmt | 0 | 0 |
| IRS990/OtherEmployeeBenefitsGrp/FundraisingAmt | 0 | 21661 |
| IRS990/OtherEmployeeBenefitsGrp/ManagementAndGeneralAmt | 0 | 45507 |
| IRS990/OtherEmployeeBenefitsGrp/ProgramServicesAmt | 0 | 6979 |
| IRS990/OtherEmployeeBenefitsGrp/TotalAmt | 0 | 74147 |
| IRS990/OtherExpensesGrp/Desc | 0 | BUILDING MAINTENANCE |
| IRS990/OtherExpensesGrp/Desc | 1 | ACQUISITION OF ART FOR |
| IRS990/OtherExpensesGrp/Desc | 2 | PROGRAM EXPENSES |
| IRS990/OtherExpensesGrp/Desc | 3 | GROUNDS MAINTENANCE |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 0 | 41133 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 1 | 19134 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 156608 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 126308 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 2 | 115412 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 3 | 61556 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 197741 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 126308 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 115412 |
| IRS990/OtherExpensesGrp/TotalAmt | 3 | 80690 |
| IRS990/OtherRevenueMiscGrp/BusinessCd | 0 | 900099 |
| IRS990/OtherRevenueMiscGrp/BusinessCd | 1 | 900099 |
| IRS990/OtherRevenueMiscGrp/Desc | 0 | MISCELLANEOUS REVENUE |
| IRS990/OtherRevenueMiscGrp/Desc | 1 | MERCHANDISE REVENUE |
| IRS990/OtherRevenueMiscGrp/ExclusionAmt | 0 | 8444 |
| IRS990/OtherRevenueMiscGrp/RelatedOrExemptFuncIncomeAmt | 0 | 39 |
| IRS990/OtherRevenueMiscGrp/TotalRevenueColumnAmt | 0 | 8444 |
| IRS990/OtherRevenueMiscGrp/TotalRevenueColumnAmt | 1 | 39 |
| IRS990/OtherRevenueTotalAmt | 0 | 8483 |
| IRS990/OtherSalariesAndWagesGrp/FundraisingAmt | 0 | 25378 |
| IRS990/OtherSalariesAndWagesGrp/ManagementAndGeneralAmt | 0 | 91840 |
| IRS990/OtherSalariesAndWagesGrp/ProgramServicesAmt | 0 | 540486 |
| IRS990/OtherSalariesAndWagesGrp/TotalAmt | 0 | 657704 |
| IRS990/OtherWebsiteInd | 0 | X |
| IRS990/PartialLiquidationInd | 0 | 0 |
| IRS990/PayPremiumsPrsnlBnftCntrctInd | 0 | 0 |
| IRS990/PayrollTaxesGrp/FundraisingAmt | 0 | 7685 |
| IRS990/PayrollTaxesGrp/ManagementAndGeneralAmt | 0 | 14568 |
| IRS990/PayrollTaxesGrp/ProgramServicesAmt | 0 | 64948 |
| IRS990/PayrollTaxesGrp/TotalAmt | 0 | 87201 |
| IRS990/PensionPlanContributionsGrp/ProgramServicesAmt | 0 | 82652 |
| IRS990/PensionPlanContributionsGrp/TotalAmt | 0 | 82652 |
| IRS990/PledgesAndGrantsReceivableGrp/BOYAmt | 0 | 2283479 |
| IRS990/PledgesAndGrantsReceivableGrp/EOYAmt | 0 | 1545037 |
| IRS990/PoliticalCampaignActyInd | 0 | 0 |
| IRS990/PrepaidExpensesDefrdChargesGrp/BOYAmt | 0 | 97464 |
| IRS990/PrepaidExpensesDefrdChargesGrp/EOYAmt | 0 | 36424 |
| IRS990/PrincipalOfficerNm | 0 | DIANNA COLMAN |
| IRS990/ProfessionalFundraisingInd | 0 | 0 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 0 | 561520 |
| IRS990/ProgramServiceRevenueGrp/Desc | 0 | TOUR REVENUE |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 0 | 317890 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 0 | 317890 |
| IRS990/ProgSrvcAccomActy2Grp/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/ProgSrvcAccomActy2Grp/ExpenseAmt | 0 | 344991 |
| IRS990/ProgSrvcAccomActy2Grp/RevenueAmt | 0 | 384592 |
| IRS990/ProgSrvcAccomActy3Grp/Desc | 0 | SCIENCE - IN 2023, OUR SCIENCE TEAM HOSTED OUR FIRST UNDERGRADUATE SUMMER RESEARCH PROGRAM, OUR FIRST ASTRONOMER-IN-RESIDENCE, AND LAUNCHED OPPORTUNITIES FOR K-12 CLASSROOMS TO VISIT THE OBSERVATORY. WE BEGAN ASSESSING THE LARGE TELESCOPES IN THE BUILDING AND IMPLEMENTED SOME IMMEDIATE UPGRADES TO PROGRESS WITH BOTH PUBLIC PROGRAMS AND RESEARCH OBSERVING. WE WELCOMED LARGE GROUPS FOR FAMILY-FOCUSED STAR PARTIES AND OBSERVING ON THE LAWN, AND WE HOSTED SEVERAL SUCCESSFUL AND PRODUCTIVE RESEARCH AND PROFESSIONAL WORKSHOPS AT YERKES OBSERVATORY. |
| IRS990/ProgSrvcAccomActy3Grp/ExpenseAmt | 0 | 413946 |
| IRS990/ProgSrvcAccomActy3Grp/RevenueAmt | 0 | 3560 |
| IRS990/ProhibitedTaxShelterTransInd | 0 | 0 |
| IRS990/PYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/PYContributionsGrantsAmt | 0 | 4578484 |
| IRS990/PYExcessBenefitTransInd | 0 | 0 |
| IRS990/PYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/PYInvestmentIncomeAmt | 0 | 15 |
| IRS990/PYOtherExpensesAmt | 0 | 610377 |
| IRS990/PYOtherRevenueAmt | 0 | 19779 |
| IRS990/PYProgramServiceRevenueAmt | 0 | 195356 |
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Displayed year
2023 • Form 990Detailed filing. Detailed filing data is available for this year.