Annual Meeting | U.S. Space & Rocket Center
Join keynote speakers Brad Schaefer, John Blevins (NASA), and Sukanya Chakrabarti (UAH) in Huntsville, Alabama!
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https://www.aavso.org/113
AAVSO Board Election: Voting & Candidates
Voting in this election is open only to members in good standing.
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https://www.aavso.org/2024-board-candidates
We Have a New Login System
Click Here to Learn More
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Webinar | Mapping Wide Binaries using Pulsation Timing Variations
Presenter: Shishir Dholakia | Saturday, October 26 at 2p.m. ET | Pre-Registration Required.
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https://us02web.zoom.us/webinar/register/1417261679442/WN_MW1fuXVeRBCk_jxxJOTZJg
Discover the AAVSO
An international community
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/welcome
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
/vsx

Pick a Star

Plot a light curve
jaavso
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
/join-aavso

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 , 8 9 0 , 9 7 7 and Counting ...

Last Observation Received:

4 min 49 sec ago by SALN - Alexandre Silva (BR)

BF Ara   Oct 1.9409   18.04V

Plot BF Ara light curve

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
Alert Notice - Observing Campaign #872: Nova in Sco: N Sco 2024 No. 3 = V1725 Sco (TCP J17064645-3528079)
Sep 11
Alert Notice - Observing Campaign #870: Unveiling CI Hyi as a symbiotic system
Sep 10
News Archives

Our Stellar Partners


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Unistellar

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NSF

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