Mission
THE ORGANIZATIONS MISSION IS TO COLLECT EVALUATE AND REPORT DATA FROM TIMINGS OF OCCULTATIONS OF STARS BY ASTEROIDS PLANETS AND THE MOON AND IS ALSO TO PROVIDE EDUCATIONAL MATERIALS AND RECOMMEDNATIONS ON OBSERVING TECHNIQUES AND EQUIPMENT.
Public Charity
International Occultation Timing Association
International Occultation Timing Association is a Public Charity headquartered in Fountain Hls, AZ. Financial data from the 2025 filing: $196K revenue, $35K expenses, $1.2M total assets.
EIN: 363254326
Fountain Hls, AZ
Astronomy
NTEE: U31
Latest filing: 2025
Total Revenue$196K
Total Expenses$35K
Total Assets$1.2M
Grant Records0
Filing Years2023–2025
Where $100 goes at International Occultation Timing Association
How International Occultation Timing Association divides every $100 it spends, from its own Form 990 filings, averaged across 3 years.
$100
Programs
the work itself
<$1
Management
running the organization
$0
Fundraising
none reported
No fundraising costs are reported. That often means fundraising runs through a separate affiliated organization that files its own return.
Inside the $100 for programs
$88
Other program service expenses
$4
Supporting the journal of occultation astronomy a freely available journal published 4 times a year containing articles on observation prediction planning equipment and analysis
$4
Supporting the website for observation results documentation
Plus 1 more program. Cost per person served and the full program breakdown are on the full profile.
Source: Form 990 filings with the IRS, latest fiscal year 2025. Shares are from the organization's reported expenses. Data by Imperigo; not affiliated with the IRS.
Officers & Directors
BOARD MEMBER
Aart Olsen
TREAURER
Joan Dunham
BOARD MEMBER
John Moore
VICE PRESIDENT FOR ASTEROIDAL SERVICES
Norman Carlson
EXECUTIVE SECRETARY
Richard Nugent
VICE PRESIDENT
Roger Venable
Officer compensation and complete director data available with membership.
Financial Trends
| Year | Revenue | Expenses | Assets |
|---|---|---|---|
| 2025 | $196K | $35K | $1.2M |
| 2024 | $60K | $48K | $987K |
| 2023 | $820K | $23K | $939K |
Between 2023 and 2025, reported annual revenue declined from $820K to $196K (-76%), with total assets most recently reported at $1.2M.
Interactive year-over-year charts and full filing details available with membership.