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Not all of my data on the LCGv2 chart

VStar needs a plug-in for TESS light curves

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

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."

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President's letter December, 2019

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Recent Activity

Variable Star Observations in Database:

40,452,082 and Counting ...

Last Observation Received:

34 min 33 sec ago by SDN - Douglas Slauson (US)

bet Lyr Jul 3.2882 3.4Vis.

Plot bet Lyr light curve

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Information For

Active forum topics

2020 AAVSO online CHOICE courses

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

Dennis Conti Honored

From our Leadership

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

Pick a Star

We gratefully acknowledge support from the Friends of the AAVSO: