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From our Leadership

President's letter December, 2019

2020 AAVSO online CHOICE courses


Dennis Conti Honored

AAVSO observer Dennis Conti received the 2020 AAS Chambliss Amateur Achievement Award "for his outstanding observational, computational, and educational contributions to exoplanet studies."

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

Are you an undergrad or grad student? Volunteer as an AAVSO Ambassador!

Pick a Star

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Recent Activity

Variable Star Observations in Database:

40,470,267 and Counting ...
Last Observation Received:

1 min 18 sec ago by SRIC - Richard Sabo (US)

HT CAM   Jan 27.2749   16.720CV   

Plot HT CAM light curve


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