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AAVSO: Optimum Science from Connecting Professionals with Citizen Volunteers

AAVSO Contributors Honored

AAVSO presented awards to their recipients at the 108th Annual Meeting

AAVSO Selected to Participate in Harvard Business School Association of Boston’s Community Action Partners Program

Increase Astronomical Discoveries by Storing Your Spectroscopic Observations with AVSpec

A new database created by AAVSO enables amateur to experienced observers to record data from any variable object in the sky

Pick a Star

Type star name then click action.
Recent Activity

Variable Star Observations in Database:

39,907,414 and Counting ...
Last Observation Received:

2 min 34 sec ago by TRF - Charles Trefzger (CH)

S AUR   Dec 5.8000   10.6Vis.   

Plot S AUR light curve


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AAVSO 49 Bay State Rd. Cambridge, MA 02138 617-354-0484