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

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From our Leadership

President's letter December, 2019

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."

2020 AAVSO online CHOICE courses


Pick a Star

Type star name then click action.
Recent Activity

Variable Star Observations in Database:

40,474,689 and Counting ...
Last Observation Received:

21 min 19 sec ago by TUB - Vince Tuboly (HU)

S CMI   Jan 21.7750   8.305V   

Plot S CMI light curve


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