Gifts in any amount may be sent by check or credit card directly to the AAS Executive Office at the address below. If you wish to direct your contribution to a specific objective, simply indicate the fund(s) for which the gift is designated. Or contribute online:

Donate Now! 

The AAS is qualified under the US Internal Revenue Code Section 501(c)(3) to receive contributions that are tax deductible. The American Astronomical Society's tax identification number is 21-0735173.

American Astronomical Society
1667 K Street NW, Suite 800
Washington, DC 20006
Phone: 202-328-2010
Fax: 202-234-2560

Endowment Giving

For those looking for a legacy investment, please stay tuned. In the meantime, you're welcome to give to the AAS Initiative Endowment Fund. Your gift will help set our perpetual endowment into motion!


Shop at and 0.5% of your eligible purchase goes to the AAS. Learn how.