Thank You All for a Great Time!
The Annual Meeting was a great success. A big "thank you" to speakers, sponsors and attendees.
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Webinar | Things I Thought I’d Never See
Presenter: Bob King | Saturday, December 7 at 2p.m. ET | Pre-Registration Required.
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Donate to the AAVSO!
Your support will provide opportunities that will influence generations of observers.
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Discover the AAVSO
An international community
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Welcome to the conversation.
We are excited to announce a transition to a new forum system. The new system is modern, faster, and easier-to-use.
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https://forums.aavso.org/

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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 5 , 2 9 2 , 8 5 8 and Counting ...

Last Observation Received:

14 min 3 sec ago by DJAD - Javier De Elías (ES)

ALF CYG   Nov 20.8847   1.238V

Plot ALF CYG light curve

Board Election Results
Nov 19
Director's Report - 2024-Q3
Oct 23
Clinton B. Ford Observatory Destroyed by Fire
Oct 7
What to Do During the Eruption of T CrB
Sep 17
2024 Proposed Bylaw Revisions
Sep 13
News Archives

Our Stellar Partners


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NSF

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