Charities United States Science & Technology Astronomical Society of the Pacific
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Astronomical Society of the Pacific

Improving science literacy through education and public outreach programs advancing the public understanding in the science and study of astronomy since 1889; collecting and publishing information concerning the …

Science & Technology San Francisco, CA EIN 940294860 · IRS Reg 36-4210977 · IRS Sign up to see website
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79
Integrity Assessment
Strong transparency
79/100 · methodology

About Astronomical Society of the Pacific

The Astronomical Society of the Pacific is an international non-profit scientific and educational organization, founded in 1889, that works to increase understanding and appreciation of astronomy.

Founded
Headquarters
San Francisco, CA
Foundation type
Supporting organization (509(a)(3))
NTEE code
U31Z
IRS subsection
501(c)(03)
Ruling date

Verified certifications

Confirmed against the issuing authority - not self-reported.

IRS Tax-Deductible since 1948

Mission

Improving science literacy through education and public outreach programs advancing the public understanding in the science and study of astronomy since 1889; collecting and publishing information concerning the science of astronomy.

Focus areas & reach

· What they work on and where
Science & Technology · NTEE U31Z
Cause tags

How it stacks up against peers

· vs. 8 similar science & technology in United States
Program spending This charity: 0%
Peer average: 11%
CEO comp as % of revenue This charity: 7.12%
Peer average: 0.48%
Integrity Assessment This charity: 79
Peer average: 89

Red flags

· All clear
IRS revocation history
Open investigations
Governance scandals
Related-party deals
Excessive exec comp

Where every $1 goes

Program expenses$0.00 ($2.2 million)

Common questions

· Auto-generated from filings + methodology

Astronomical Society of the Pacific is a registered science & technology nonprofit based in San Francisco, CA, United States. It is registered with the Internal Revenue Service (IRS). It was founded in 1889 and has been operating for 137 years. Its EIN is 940294860. It has a GiveRadar Integrity Assessment of 79/100 (Strong transparency), indicating well-documented governance, financials, and contact details. This is below the average of 89/100 for science & technology charities in United States. The organization reports $2M in annual revenue. 63 officers and directors are publicly disclosed. No red flags have been detected.

Astronomical Society of the Pacific has a GiveRadar Integrity Assessment of 79/100. This score combines five components: Registration (20 pts), Financial Transparency (30 pts), Governance (20 pts), Contact Availability (10 pts), and Data Recency (20 pts), with negative adjustments for any red flags. A score of 79 ('Strong transparency') reflects well-documented governance, recent financials, named leadership, and working contact details. For comparison, the average integrity assessment for science & technology charities in United States is 89/100.

Astronomical Society of the Pacific is located in San Francisco, CA, United States. The organization was established in 1889 and has been active for 137 years.

Based on official tax filings, Astronomical Society of the Pacific has $2M in annual revenue. It allocates 0% of expenses to programs and services. This is below the average of 11% for science & technology charities in United States. Its revenue is below the peer average of $14M. Create a free GiveRadar account to view the complete financial breakdown with year-over-year trends.

Astronomical Society of the Pacific is classified as a Science & Technology organization, registered in United States. It operates as a Supporting organization (509(a)(3)). It has $2M in annual revenue. The organization has 63 disclosed officers and directors.

No red flags have been detected for Astronomical Society of the Pacific. GiveRadar automatically screens charities for concerning patterns including high executive compensation, low program spending, and missing financial filings. Based on available official data, no issues have been identified.

Astronomical Society of the Pacific has a GiveRadar Integrity Assessment of 79/100 (Strong transparency) and no red flags have been detected, which suggests it is a well-documented organization. It is regulated by the IRS. 0% of expenses go to programs. The peer average is 11%. You can donate directly through their official donation page linked on their GiveRadar profile. GiveRadar provides data for research purposes and does not endorse any organization. Always do your own due diligence.

The Astronomical Society of the Pacific is an international non-profit scientific and educational organization, founded in 1889, that works to increase understanding and appreciation of astronomy. Astronomical Society of the Pacific is classified as a science & technology organization registered in United States. The organization was founded in 1889.

Among science & technology charities registered in United States: Astronomical Society of the Pacific's GiveRadar Integrity Assessment of 79/100 is below the peer average of 89/100. It allocates 0% of expenses to programs, below the peer average of 11%. Its annual revenue of $2M is below the peer average of $14M.

Yes, donations to Astronomical Society of the Pacific are generally tax-deductible in the United States. Astronomical Society of the Pacific is a 501(c)(3) tax-exempt organization. Its EIN is 940294860, which you can use for tax filing purposes. Donors can typically deduct contributions on their federal income tax return if they itemize deductions. Consult a tax professional for guidance specific to your situation.

Verified against 5 official sources, last refreshed .

Annual revenue
$1M-$10M
0% to programs
Source: IRS 990 (FY2024) why this matters
Unlock exact figures

Filing history

5 years on file from IRS 990 (FY2024): revenue, expenses, program spending, assets, and liabilities by fiscal year.

Years on record: FY2024, FY2023, FY2022, FY2021, FY2020.
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Taxes

Tax-deductibility for donors

Donations may be tax-deductible for residents of United States under local rules. Confirm with the charity directly.

Always confirm tax treatment with the charity directly or your tax advisor before donating.

Leadership

CH
Chris Ford
CEO

Officers & trustees (20)

Source: Public filings

AB
Abdul D••••••
Board Member
CA
Catherine C•••••••
Board Member
CH
Chris F•••
CEO
CH
Chris L••••••
Board Member
DA
David K•••••
Board Member
DE
Derrick P••••
President
ED
Edna D•••••
Secretary
EN
Enrico R••••••
Vice President
JA
James N••••
Board Member
JE
Jeffrey B••••••
Board Member
JI
Jimmy N••••
Board Member
JO
John K•••••
Board Member
JO
Joycelin C••••
Dir. Mbrs & Comms
KA
Kat C•••••••
Board Member
LI
Linda S••••
CEO
LI
Linda S S••••
CEO
M
M K••• R•••••••• W•••••••
Board Member
RE
Renee R•••••
Board Member
ST
Steve D•••••
Treasurer
SU
Sunil N••••••
Board Member
Full names, contact details & compensation

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Latest news

From global news sources

No recent news coverage found

News coverage will appear here when articles mention this organization.

Activity timeline

Filings and press mentions, merged

Form filed
$2.4M revenue
FY2024
IRS_990
Form filed
$2.4M revenue
FY2023
IRS_990
Form filed
$2.2M revenue
FY2022
IRS_990
Form filed
$2.4M revenue
FY2021
IRS_990
Form filed
$3.2M revenue
FY2020
IRS_990

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Peer charities

Other science & technology in United States, by integrity assessment

Charity Score Revenue Program %
Astronomical Society of the Pacific This page 79 $2.4 million 0%
Bioinnovations Institute 89 $1.3 million 91%
Collaborative for Leadership in Ayres Sensory Integration 89 $1.8 million -
Blue Marble Space 89 $5.1 million -
Corrim Consortium for Research on Renewable Industrial Materials 89 $2.4 million -
Freshwater Society 89 $1.4 million 0%
Sigma Xi the Scientific Research Honor Society Inc 89 $4.9 million -
Mind Research Institute Inc 89 $5.7 million -
Science Communication Lab Inc 89 $2.2 million -

Sources and verification

Refreshed

Registration and legal identity
Internal Revenue Service (IRS) - Tax Exempt Organization Search
Financial filings
IRS Form 990 filings - Fiscal year 2024 most recent on file.
Officers and trustees
Internal Revenue Service (IRS) - Tax Exempt Organization Search - 63 disclosed in the public registry.
News and media coverage
GDELT Project + Google News
Supplementary verification
Charity Navigator

Data freshness

Last updated
May 27, 2026
Profile completeness
90%

What we don't know

Honest gaps - our score reflects transparency, not impact

Programs & projects
No named programs listed by the charity
Operating reach
Countries where programs run not specified

Methodology

GiveRadar combines public registry filings, ProPublica Nonprofit Explorer, Charity Navigator, GuideStar, and news archives into a single 0-100 integrity assessment. We don't take a cut of any donation, ever.

Read full methodology

Quick facts about Astronomical Society of the Pacific

What is Astronomical Society of the Pacific?
Astronomical Society of the Pacific is a science & technology supporting organization (509(a)(3)) based in San Francisco, United States. The Astronomical Society of the Pacific is an international non-profit scientific and educational organization, founded in 1889, that works to increase understanding and appreciation of astronomy.
When was Astronomical Society of the Pacific founded?
Astronomical Society of the Pacific was founded in 1889.
Who leads Astronomical Society of the Pacific?
Chris Ford serves as CEO.
Where is Astronomical Society of the Pacific located?
Headquartered in San Francisco, United States.
What is Astronomical Society of the Pacific's annual budget?
Annual revenue for fiscal year 2024 is approximately $1M-$10M. 0% of expenses go to program services.
Is Astronomical Society of the Pacific trustworthy?
Astronomical Society of the Pacific has a GiveRadar Integrity Assessment of 79 out of 100 (Strong transparency). The score reflects public-data transparency: registration, financial disclosure, governance, contact details, and how recently data was refreshed. It does not measure program impact.
What is Astronomical Society of the Pacific's registration number?
IRS EIN: 940294860. Registration: 36-4210977 (United States).
What is Astronomical Society of the Pacific's website?
http://www.astrosociety.org