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Meet our new board members!

Class of 2025

https://www.aavso.org/officers-and-board-members

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

(VSX) Variable Star Index

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The Journal of the AAVSO

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Submit and Access Data

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Tools and Observer Resources

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Observing Sections

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Education

CHOICE Courses, Manuals, Videos

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AAVSO In Press

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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 5 , 2 9 5 , 1 2 1 and Counting ...

Last Observation Received:

12 sec ago by WGUA - Guy Williamson (GB)

ATLAS22BEUX Dec 6.2369 13.573V

Plot ATLAS22BEUX light curve

Alert Notice 801: GM Aur and BP Tau monitoring for HST and TESS

Dec 1

Solar Bulletin - Volume 78, Number 10

Nov 18

Alert Notice 800: Photometry needed for five YSO stars in support of spectroscopy

Nov 17

Alert Notice 799: ZTF18acxhphf being observed with HST this week

Nov 15

Alert Notice 798: Photometry and spectroscopy requested for ASAS J060415+1245.9

Nov 14

News Archives

Our Stellar Partners

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Resources

Pick a Star

AAVSO at a Glance

Variable Star Observations in Database:

Last Observation Received:

Our Stellar Partners