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See our Annual Meeting Schedule!
Register today!
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October's featured variable star episode: Mira (Omicron Ceti)
Finder charts | Tips for the beginner
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Attention AAVSO members: cast your vote for board members!
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Welcome to the AAVSO!
New explorers are welcome.
YOU can be an astronomer.
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The mission of the AAVSO is to enable anyone, anywhere to participate in scientific discovery through variable star astronomy. 

Resources

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(VSX) Variable Star Index
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Pick a Star

Plot a light curve
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The Journal of the AAVSO
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Data
Submit and Access Data
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Tools and Observer Resources
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Membership and Support
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The AAVSO is an equal opportunity and discrimination / harassment free environment. 
Please read our policies HERE

AAVSO at a Glance

Variable Star Observations in Database:

4 6 , 7 2 4 , 8 7 2 and Counting ...

Last Observation Received:

7 min 26 sec ago by DUBF - Franky Dubois (BE)

GK PER   Oct 15.7781   12.684V

Plot GK PER light curve

Press
Oct 15
Alert Notice 756: GM Aur being observed by HST and TESS
Oct 14
Alert Notice 755: Exoplanet transit observation requested for HD 80606
Sep 22
Only 2 weeks left to access Group Hotel Rate for the Annual Meeting
Sep 21
Solar Bulletin - Volume 77, Number 08
Sep 17
News Archives

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