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Centennial Celebration

JAAVSO Invited Review Papers


Invited review papers published in the special centennial edition of The Journal of the American Association of Variable Star Observers

2011 The Centennial Year in Review

The following are highlights from 2011, the centenary year of the AAVSO.

Spring Meeting, May 21-26, Joint meeting with the AAS

100th Annual Meeting - Schedule

October 4-8, 2011
AAVSO HQ, Cambridge, MA & Hilton Hotel, Woburn, MA

Tue, 10/4

All day

     Council Meeting - Current Council Members Only (@ AAVSO HQ)

Wed, 10/5


     Historical Paper Session: Women in AAVSO History; The History of Variable Star
Organizations (@ Woburn Hilton)


     Historical Paper Session: The History of Variable Star Organizations (@ Woburn Hilton)


Centennial Celebration Update March 2011

We are nearing the end of the first quarter of our centennial year. This is a good time to take a look at what has transpired thus far and what is yet to come.

Observer Challenges

The Twenty Million and Counting! Contest is over now that the database has passed this milestone. The winner, with the prediction closest to the actual day of the milestone was Christopher Watson of San Diego, California.


A citizen science project running for over 100 years reached a key milestone this month when an amateur astronomer contributed the 20 millionth observation of a variable star on February 19, 2011.

Centennial T-Shirt Fundraiser

To help support our 2011 Centennial Celebration the AAVSO is offering special commemorative T-shirts in exchange for your $50.00 donation to the AAVSO. This was a limited edition run of 200 shirts only (update: about 130 left as of May, 2011). Once they are gone they are gone. We will never produce these collector items again.

AAVSO 49 Bay State Rd. Cambridge, MA 02138 617-354-0484