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IRS-authorized e-file provider · not the IRS

Nonprofit · EIN 36-4167602

ASTRONOMICAL ASSOCIATION OF SOUTHERN ILLINOIS

Tax-exempt · CARBONDALE, IL 62903

Address and contacts

Address (IRS master file)
PO BOX 874, CARBONDALE, IL 62903-0874
Mailing address (990-N for 2024)
PO BOX 874, CARBONDALE IL 62903
Principal officer (990-N for 2024)
Wayne Aydt, 13800 Fudgetown Rd, Johnston City IL 62951

What it must file and when

IRS records say it files Form 990-N (e-Postcard). Gross receipts normally $50,000 or less. Its accounting year ends in June, so each return is due on the 15th day of the 5th month after that.

Tax yearYear endedDueIRS public records
2025June 30, 2026November 16, 2026Not due yet
2024June 30, 2025November 17, 2025990-N on file
2023June 30, 2024November 15, 2024990-N on file

File the 2025 990-N for ASTRONOMICAL ASSOCIATION OF SOUTHERN ILLINOIS

Due November 16, 2026 · e-filed with the IRS by 990.tax, an IRS-authorized e-file provider

IRS record

EIN
36-4167602
Tax-exempt status
501(c)(3): Charitable, religious, educational or scientific organization
Foundation status
Publicly supported organization (509(a)(2))
Donations deductible (Pub 78)
Public charity, 50% deduction limit
Exempt since
2019
Accounting year ends
June
Files
Form 990-N (e-Postcard)

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-N for 2024
Officer: Wayne Aydt
June 30, 2025≤ $50,000 receipts––e-Postcard
990-N for 2023
Officer: Wayne Aydt
June 30, 2024≤ $50,000 receipts––e-Postcard
990-N for 2022
Officer: Harry Treece
June 30, 2023≤ $50,000 receipts––e-Postcard
990-N for 2020
Officer: Harry Treece
June 30, 2021≤ $50,000 receipts––e-Postcard
990-N for 2019
Officer: Harry Treece
June 30, 2020≤ $50,000 receipts––e-Postcard

990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 36-4167602).

Questions about ASTRONOMICAL ASSOCIATION OF SOUTHERN ILLINOIS

What is the EIN of ASTRONOMICAL ASSOCIATION OF SOUTHERN ILLINOIS?
The employer identification number (EIN) of ASTRONOMICAL ASSOCIATION OF SOUTHERN ILLINOIS is 36-4167602.
Is ASTRONOMICAL ASSOCIATION OF SOUTHERN ILLINOIS tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2019.
Are donations to ASTRONOMICAL ASSOCIATION OF SOUTHERN ILLINOIS tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does ASTRONOMICAL ASSOCIATION OF SOUTHERN ILLINOIS file?
Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
When is the next return of ASTRONOMICAL ASSOCIATION OF SOUTHERN ILLINOIS due?
The return for tax year 2025 (the year ending June 30, 2026) is due November 16, 2026. Form 8868 extends it by six months; the 990-N cannot be extended.
When did ASTRONOMICAL ASSOCIATION OF SOUTHERN ILLINOIS last file with the IRS?
The latest return in the IRS public files is the 990-N for 2024 for the year ended June 30, 2025.
Who is the principal officer of ASTRONOMICAL ASSOCIATION OF SOUTHERN ILLINOIS?
The 990-N for 2024 names Wayne Aydt.

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