Nonprofit · EIN 22-2517414
BLUE HILL OBSERVATORY SCIENCE CENTER INC
Tax-exempt · MILTON, MA 02186
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| August 31, 2025 | 990 | $628,207 | $625,859 | $2,348 | $414,016 | $8,322 | $405,694 |
| August 31, 2024 | 990 | $547,015 | $669,183 | -$122,168 | $409,431 | $6,085 | $403,346 |
| August 31, 2023 | 990 | $558,778 | $397,319 | $161,459 | $578,127 | $52,613 | $525,514 |
Financial details: 990 for the year ended August 31, 2025
Revenue
- Contributions, gifts and grants
- $513,898
- of which government grants
- $199,214
- Program service revenue
- $100,313
- Investment income
- $761
- Net income from fundraising events
- $1,927
- Net income from sales of inventory
- $11,010
- Other revenue
- $13,235
Expenses
- Grants and similar amounts paid
- $0
- Compensation of officers, directors and key employees
- $64,240
- Other salaries and wages
- $338,522
- Salaries, compensation and benefits (total)
- $460,854
- Professional fundraising fees
- $0
- Legal fees
- $1,238
- Accounting fees
- $9,795
- Occupancy
- $2,148
- Travel
- $2,131
- Depreciation
- $36,546
- Program services (functional)
- $319,024
- Management and general (functional)
- $222,287
- Fundraising (functional)
- $84,548
Balance sheet and other
- Total assets, start of year
- $409,431
- Total assets, end of year
- $414,016
- Total liabilities, end of year
- $8,322
- Net assets, end of year
- $405,694
- Land, buildings and equipment
- $174,075
- Net assets without donor restrictions
- $405,694
- Gross receipts
- $661,605
- Employees
- 14
- Volunteers
- 15
- Year formed
- 1981
- State of legal domicile
- MA
From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.
Officers, directors and key employees
As listed on the 990 for the year ended August 31, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Charles T Orloff | Executive Dir. Officer | 30 | $64,240 |
| Samilys Rodriguez | Director Trustee or director | 1 | $0 |
| Derrick Dominique | Treasurer Trustee or director, Officer | 1 | $0 |
| Robert Thompson | Board Chair Trustee or director, Officer | 1 | $0 |
| Janice Richards | Director Trustee or director | 1 | $0 |
| Tim Kelly | Director Trustee or director | 1 | $0 |
| Christine Caswell | Director Trustee or director | 1 | $0 |
| Nick Cacici | Director Trustee or director | 1 | $0 |
| KellyAnne Mahoney | Director Trustee or director | 1 | $0 |
| Dr Bruce Anderson | Director Trustee or director | 1 | $0 |
| Dr Tamara Ledley | Clerk Trustee or director, Officer | 1 | $0 |
| Milton Irving | Director Trustee or director | 1 | $0 |
| Jason Brewer | Director Trustee or director | 1 | $0 |
| Kevin Lemanowicz | Director Trustee or director | 1 | $0 |
990 for the year ended August 31, 2024: 10 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Charles T Orloff | Executive Dir. Officer | 30 | $63,000 |
| Samilys Rodriguez | Director Trustee or director | 1 | $0 |
| Alex Carr | Treasurer Trustee or director, Officer | 1 | $0 |
| Robert Thompson | Board Chair Trustee or director, Officer | 1 | $0 |
| Janice Richards | Director Trustee or director | 1 | $0 |
| Tim Kelly | Director Trustee or director | 1 | $0 |
| Christine Caswell | Director Trustee or director | 1 | $0 |
| KellyAnne Mahoney | Director Trustee or director | 1 | $0 |
| Dr Bruce Anderson | Director Trustee or director | 1 | $0 |
| Dr Tamara Ledley | Clerk Trustee or director, Officer | 1 | $0 |
990 for the year ended August 31, 2023: 11 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Charles T Orloff | Executive Dir. Officer | 30 | $63,000 |
| Samilys Rodriguez | Director Trustee or director | 1 | $0 |
| Mark Duff | Treasurer Trustee or director, Officer | 1 | $0 |
| Robert Thompson | Board Chair Trustee or director, Officer | 1 | $0 |
| Janice Richards | Director Trustee or director | 1 | $0 |
| Timothy Kelly | Director Trustee or director | 1 | $0 |
| Christine Caswell | Director Trustee or director | 1 | $0 |
| Alex Carr | Asst. Treasurer Trustee or director, Officer | 1 | $0 |
| KelleyAnne Mahoney | Director Trustee or director | 1 | $0 |
| Bruce Anderson | Director Trustee or director | 1 | $0 |
| Dr Tamara Ledley | Clerk Trustee or director, Officer | 1 | $0 |
Address and contacts
- Address (IRS master file)
- 1 OBSERVATORY SERVICE RD, MILTON, MA 02186-2447
- Principal officer (990 for 2024)
- Tamara Shapiro Ledley
- Signed the 990
- Dr Alex J Evans, Executive Director
- Phone
- (617) 696-0562
- Website
- bluehill.org
- Return prepared by
- Minsk Gould Tattrie & Lussier LLP
Mission
To continue monitoring weather the same way as done since 1885. To maintain and develop a meticulous weather and climate record. To educate the public about Atmospheric Science, the history of Blue Hills observatory and many STEM topics.
Program accomplishments
- The Organization offered a variety of educational programs throughout the year, including a series of outdoor events focused on weather phenomena. These programs featured tours of the Observatory and included interviews with authors, meteorologists, and other science professionals. Additionally, the Organization participated in the Southern New England Weather Conference, which it co-hosts with the National Weather Service.Expenses $182,554 · revenue $60,326
- The Organization observes and records the weather for current and future generations.Expenses $93,553 · revenue $36,000
- The Organization has refreshed its membership program to give members even more ways to engage with the Observatory. Members now receive regular communications from the Organization and have the opportunity to purchase books, Observatory souvenirs, educational toys, and science kits. Additional member benefits include exclusive tours of the Observatory, as well as access to volunteer opportunities and internships. These enhancements reflect the Organization's commitment to providing meaningful and engaging experiences for its members.Expenses $42,917 · revenue $5,788
What it must file and when
IRS records say it files Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N. Its accounting year ends in August, so each return is due on the 15th day of the 5th month after that.
| Tax year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | August 31, 2026 | January 15, 2027 | Not due yet |
| 2024 | August 31, 2025 | January 15, 2026 | 990 on file |
| 2023 | August 31, 2024 | January 15, 2025 | 990 on file |
IRS record
- EIN
- 22-2517414
- 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
- 1985
- Accounting year ends
- August
- Files
- Form 990 or 990-EZ
- Assets (IRS master file)
- $414,016
- Income (IRS master file)
- $661,605
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | August 2025 | $628,207 | $625,859 | $414,016 | XML |
| 990 | August 2024 | $547,015 | $669,183 | $409,431 | XML |
| 990 | August 2023 | $558,778 | $397,319 | $578,127 | IRS |
| 990 | August 2022 | $526,384 | $391,688 | $388,902 | IRS |
| 990 | August 2021 | – | – | – | IRS |
| 990 | August 2020 | – | – | – | IRS |
| 990 | August 2018 | – | – | – | IRS |
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 22-2517414).
Questions about BLUE HILL OBSERVATORY SCIENCE CENTER INC
- What is the EIN of BLUE HILL OBSERVATORY SCIENCE CENTER INC?
- The employer identification number (EIN) of BLUE HILL OBSERVATORY SCIENCE CENTER INC is 22-2517414.
- Is BLUE HILL OBSERVATORY SCIENCE CENTER INC tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1985.
- Are donations to BLUE HILL OBSERVATORY SCIENCE CENTER INC tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does BLUE HILL OBSERVATORY SCIENCE CENTER INC file?
- Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N.
- When is the next return of BLUE HILL OBSERVATORY SCIENCE CENTER INC due?
- The return for tax year 2025 (the year ending August 31, 2026) is due January 15, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
- When did BLUE HILL OBSERVATORY SCIENCE CENTER INC last file with the IRS?
- The latest return in the IRS public files is the 990 for the year ended August 2025.
- Who is the principal officer of BLUE HILL OBSERVATORY SCIENCE CENTER INC?
- The 990 for the year ended August 31, 2025 names Tamara Shapiro Ledley.
- Who are the officers and directors of BLUE HILL OBSERVATORY SCIENCE CENTER INC?
- The 990 for the year ended August 31, 2025 lists 14 people; 1 received compensation from the organization, the highest $64,240 (Charles T Orloff, Executive Dir.).
- How much revenue does BLUE HILL OBSERVATORY SCIENCE CENTER INC have?
- On its 990 for the year ended August 31, 2025 it reported revenue of $628,207, expenses of $625,859 and total assets of $414,016 at year end.
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