Deadline Extended to Submit Talk Abstracts
The AAVSO invites would-be presenters to submit their topics by September 10.
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We Have a New Login System
Click Here to Learn More
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Registration Opens for Annual Meeting
Join us at the U.S. Space & Rocket Center in Huntsville, Alabama!
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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
/apps/jaavso
Data
Submit and Access Data
/databases
Telescope
Tools and Observer Resources
/observers
Observing Sections
Observing Sections
/observing-sections
Education
Education
CHOICE Courses, Manuals, Videos
/education
AAVSO In the Press
AAVSO In the Press
/press
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:

6 4 , 5 1 4 , 5 5 8 and Counting ...

Last Observation Received:

57 sec ago by FPIA - Pierre Fleurant (US)

V0347 AUR   Sep 4.2548   15.828V

Plot V0347 AUR light curve

Alert Notice - Observing Campaign #870: Unveiling CI Hyi as a symbiotic system
Sep 10
Alert Notice - Observing Campaign #865: Photometry and Spectroscopy of WR 140 (V1687 Cyg) through its upcoming periastron
Sep 10
No, it didn’t erupt yet. How AAVSO is vetting T CrB data
Sep 10
Alert Notice 868: Photometry of BZ Camelopardalis in support of HST, Chandra multiwavelength observing campaign
Aug 26
Alert Notice 869: CS Ind HST schedule set for August 30
Aug 23
News Archives

Our Stellar Partners


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Unistellar

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