How to navigate our new AAVSO website:
6-minute video tour
Slider Link
https://www.youtube.com/watch?v=71y9Q3ei_3M
Welcome to the AAVSO!
New explorers are welcome.
YOU can be an astronomer.
Slider Link
https://www.youtube.com/watch?v=tgCB2lBRk8s&t=5s
AAVSO 2021 Webinars and How-to Hours
Sign up for any to all of these!
Slider Link
/2021-webinars
April's variable star and observing guide
Explore R LEONIS of LEO with us! Monthly episodes include a video, finder chart, observing tips for the beginner.

A collaboration of the AAVSO, Ball State University, and the International Planetarium Society
Slider Link
https://www.aavso.org/featured-variables
A huge heartfelt "thank you!" to all of our volunteers! Watch our social media for our daily special shout-outs!
Happy Global Volunteer Month!
Slider Link
https://www.aavso.org/sites/default/files/education/presentations/AAVSO%20Poster%20-%20volunteers2020.pdf
Read personal stories from our members on how they became interested in astronomy and the AAVSO! Do YOU have a story? Send it to Gordon Myers at president@aavso.org!
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Slider Link
https://www.aavso.org/sites/default/files/AAVSO%20pdfs/AAVSO-Member-Stories.pdf
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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
Shop
Shop
https://shop.spreadshirt.com/aavso/
Join and Support
Join 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:

4 4 , 6 2 4 , 9 2 7 and Counting ...

Last Observation Received:

8 min 28 sec ago by PREB - Pierre Reiss (FR)

betelgeuse   Apr 17.8442   0.92Vis.

Plot betelgeuse light curve

Solar Bulletin - Volume 77, Number 03
Apr 16
Alert Notice 740: Nova in Scorpius: V1710 Sco = N Sco 2021 = ASASSN-21fh = PNV J17091000-3730500
Apr 14
Alert Notice 739: Nova in Sagittarius: N Sgr 2021 No. 2 = PNV J17581670-2914490 [V6595 Sgr]
Apr 6
LPV of the Month, April 2021: R Leonis
Apr 5
Alert Notice 738: R Aqr monitoring needed in support of Chandra and HST observations
Apr 5
News Archives

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