Webinar | Introduction to Exoplanet Observing
An entertaining overview of the instruments, software, and processes used to detect exoplanets using the transit method.
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https://us02web.zoom.us/webinar/register/6817232347324/WN_UnmUO6FWT22wJ4N18fkFXg
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
We Have a New Login System
Click Here to Learn More
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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
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Observing Sections
Observing Sections
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Education
Education
CHOICE Courses, Manuals, Videos
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AAVSO In the Press
AAVSO In the 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:

6 4 , 4 5 9 , 4 1 9 and Counting ...

Last Observation Received:

6 min 55 sec ago by CDZ - David Cejudo (ES)

T CRB   Sep 16.8709   11.21B

Plot T CRB light curve

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
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
News Archives

Our Stellar Partners


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