California · Nonprofit
Astronomers without Borders
Astronomers without Borders (California) receives grants from 2 organizations whose IRS filings report $4,682 to it, the largest being The Silseth Foundation ($4,000). 2 of them have funded it in more than one year.
- Revenue FY2024
- $206k
- Funders on record
- 2
- Grants received
- $5k
- Net assets
- $135k
What Astronomers without Borders does
Mission
The mission of astonomers without borders is to build and cultivatecommunity through astronomy. Our vision is a global community thatappreciates, studies, and shares the wonders of the universe, to broadenperspective, transcend borders, and improve lives.
As stated on its FY2024 Form 990.
Programs
Astronomers without Borders creates and implements astronomy-related programs that inspire and empower a global community of enthusiasts and educators.
$58,012 spent82% of program spendingAstronomers without Borders utilizes their website to create and engage an online community of astronomy-related enthusiasts and educators in the sharing of resources globally.
$13,016 spent18% of program spending
The 2 programs described on its FY2024 Form 990, listed largest first by expense. Program spending in total: $71,028.
The organization over time
Each line starts at 100 in 2017, so what you read is the shape rather than the size: 150 means half as much again as 2017, 50 means half. The number beside each label in the key is where it ended. The shaded band is where the middle 50% of its peers' revenue would sit, given their growth.
Balance sheet
Total assets and total liabilities at each year end, in dollars. The largest one-year move in total assets was 2019 to 2020, from $74k to $285k (+285%).
How it's funded, over time
Each bar is one year's revenue split into where it came from, and every bar is the same height — these are shares, not amounts, so a year that raised twice as much looks the same size. Hover a bar for the split.
8% of Astronomers without Borders’s revenue is contributions — more earned-revenue than three-quarters of its peers (79% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 4 of the last 8 reported years ran a deficit.
reserve
Leadership and staff
The officers, directors, trustees and key employees listed on each return. Joined and no longer listed compare each filing with the year before, matching people by surname and first initial; a year after a gap, or a roster under three people, has no comparison.
Chief executive
Yasmin Catricheo
CEO
Board chair
Timothy Spuck
Board Chair
As listed on its FY2024 Form 990.
The chief executive listed changed between the FY2023 and FY2024 filings.
Who funds it, year by year
2020 → 2023: the base broadened from 1 funder to 2 funders, grant income rose $193 → $1k.
1 of 2 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 15% of grant dollars received. That money is really individual donors directing a sponsor; the institutions to cultivate are the non-DAF funders.
From the IRS filings of Astronomers without Borders’s funders (the co-funder graph). Association, not causation. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
How concentrated its funding is
Astronomers without Borders leans on a few funders — its largest provides 85% of grant income and the top three 100%; half comes from just 1 funder.
the vertical line marks half of all grant income — 1 funder to its left
Largest funder’s share by year: 2020 100% · 2021 83% · 2022 86% · 2023 90% — diversifying over time.
“Effective funders” = inverse Herfindahl index (1 / Σ shareᵢ²) — the number of equal-sized funders that would give the same concentration. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
Where its funders are
Astronomers without Borders draws 100% of its grant income from funders outside California, across 1 state in all.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $682 arriving through sponsors registered in 1 state is excluded from the map and the split above: a sponsor holds money on a donor’s behalf, so its registered address would place those dollars somewhere no donor need ever have been. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
Against its field
Astronomers without Borders runs a healthier operating margin than three-quarters of the 793 science & tech nonprofits its size.
this organization peer median middle 50% of peers· 793 science & tech nonprofits $100k–$1M, FY2024
Organizations like Astronomers without Borders
Organizations whose mission and program text most resemble this one, by semantic similarity over every organization in the US filings — the closest peers, and often the clearest route to shared or prospective funders.
In California
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Where the money goes
48% of spending goes to programs.
Governance
Public support
100%
Share of support from the public (Schedule A) — the basis for its public-charity status.
Footprint & structure
Files a return copy in 1 state
Screen this organization
A dated, signed PDF of the compliance screen for Astronomers without Borders: IRS status (Business Master File, Publication 78, auto-revocation), the OFAC sanctions lists, the Internal Revenue Bulletin, and California registration, with the Rev. Proc. 2018-32 §8.01 reliance elements stated element by element. Generated from the current files at the moment you download it.
Screens are triage, not determinations; a source that cannot be read reports not screened, never clear. Screen this nonprofit · How the screen works · on the API as GET /api/screening/{ein}?format=pdf
Questions and answers
- Who funds Astronomers without Borders?
- Astronomers without Borders (California) receives grants from 2 organizations whose IRS filings report $4,682 to it, the largest being The Silseth Foundation ($4,000). 2 of them have funded it in more than one year.
- How many funders does Astronomers without Borders have?
- IRS filings report 2 organizations giving $4,682 in grants to Astronomers without Borders, 2 of which have funded it in more than one year.
- Who is the largest funder of Astronomers without Borders?
- The Silseth Foundation is the largest funder on record, with $4,000 in grants. The full list of funders is on this page.
- How can an organization like Astronomers without Borders find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in California. The funding by cause and by state pages list the largest funders for a given area and how to approach them.
Play a game about who funds Astronomers without Borders →
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2024 (financials across 2017–2024), and the filings of 2 funders that report grants to it. “On record” means captured in the filings we have parsed — a funder that does not e-file, or whose grant detail is not itemized, will not appear. Filings run roughly 12–24 months behind. Trends on this page end at FY2023, the last fiscal year that has finished arriving; later years are shown and marked, and move no figure. Data on this page was exported October 14, 2026. What this page cannot tell you · view filing