Register for the 2023 Annual Meeting
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Target Tool Has a New Home
Click Here to Learn More
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https://www.aavso.org/target-tool-has-new-home
The European Space Agency wants your help!
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https://www.esa.int/Enabling_Support/Preparing_for_the_Future/Space_for_Earth/Amateur_astronomers_needed_help_classify_stars_with_Gaia_s_data
La Ciencia del Cielo para Principiantes
Seminarios web de astronomia gratis en espanol
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Discover the AAVSO
an international community
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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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Telescope
Tools and Observer Resources
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Observing Sections
Observing Sections
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Education
Education
CHOICE Courses, Manuals, Videos
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AAVSO In Press
AAVSO In Press
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Membership and Support
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:

5 9 , 4 5 2 , 2 9 5 and Counting ...

Last Observation Received:

1 min 9 sec ago by RNDA - Normand Rivard (CA)

FO AQR   Sep 28.1845   13.340V

Plot FO AQR light curve

112th Annual Meeting Group Hotel Rate ends in 9 days- book today!
Sep 27
Alert Notice 833: LL Lyr to be observed with HST in September/October
Sep 20
Alert Notice 832: Monitoring of FO Aqr needed for HST observations
Sep 19
Early Bird Registration for the Annual Meeting ends this Friday, 9/15!!!
Sep 13
Abstracts due in 1 week for 2023 Annual Meeting Talks!!
Aug 28
News Archives

Our Stellar Partners


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