observing program

AAVSO Bulletin 80 for 2017 - How to Use the Bulletin

AAVSO Bulletin 80 - Predicted Dates of Maxima and Minima of Long Period Variables for 2017 - is published in the format that was introduced in 2011. The information that was included in earlier numbers of the Bulletin is included in this format, along with more information. The Bulletin does not include stars that do not have an AAVSO mean curve.

AAVSO Bulletin 80 for 2017 - Letter to Observers

Letter to Users of 2017 Bulletin

                                                                                                                                            February 2017

Dear Observers,

AAVSO Bulletin 79 for 2016 - Stars with Double Maxima

In AAVSO Bulletin 79 there are two stars that exhibit double maxima:  R Cen and R Nor. These stars therefore have primary and secondary maxima and minima. They are not included in the main Bulletin table. Their predicted dates of maximum and minimum for January 2016 through February 2017 are presented here in list form (JD and Gregorian calendar dates) and in approximation of the main Bulletin table format.