115th Annual Meeting Registration is Now Open
Join us in Santa Fe, NM Nov. 7th and 8th
Slider Link
/115
Building for the Future: AAVSO Expands Staff and Scientific Capacity
Building on recent growth in observers, scientific output, and community engagement, the AAVSO is making strategic investments to strengthen its future and expand opportunities for participation in astronomy.
Slider Link
https://www.aavso.org/blog/building-for-the-future
A Universe of Opportunity: The Future of Small Telescope Science in the LSST Era
Each time a major sky survey comes online, the inevitable question arises: “Is this the end of amateur astronomy?”
Slider Link
https://www.aavso.org/blog/future-of-small-telescope-science
Discover the AAVSO
An international community
Slider Link
/welcome

old logo

The vision of the AAVSO is to become the leading platform where people of all ages and backgrounds learn about and participate in scientific astronomy.

Resources

VSX Logo
(VSX) Variable Star Index
https://vsx.aavso.org/

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:

8 4 , 2 2 6 , 3 8 0 and Counting ...

Last Observation Received:

1 hour 50 min ago by CVIF - Viktor Cseh (HU)

TCP J02191736+2857158   Jul 15.0208   12.56TG

Plot TCP J02191736+2857158 light curve

JAAVSO Volume 54, Number 1, June 2026, print version now available
Jul 9
Director’s Report - 2026-Q1/Q2
Jul 8
JAAVSO Volume 54, Number 1, 2026 is published
Jun 15
Building for the Future: AAVSO Expands Staff and Scientific Capacity
Jun 15
Joanna DiStefano
Jun 3
News Archives

Our Stellar Partners


orange circle with with snake next to the words "The Astropy Project"

Diffraction Limited logo of a swirled circle with text: Diffraction: Astronomy + Scientific Imaging SolutionsIm

Chroma Technology logo: the word chroma goes through a bright rainbow-colored hoop

Black outline of an intricately dressed being with accentuated features

Unistellar

Boyce Astro Logo

Text reads DC-3 Dreams Observatory Operating Systems

Text reads "Sky & Telescope" with the ampersand in a circle.

NSF

NASA Logo