mira variable

Ongoing visual, photometric, and spectroscopic observations of R Aqr about once every 10 days are requested, both to detect and observe the next eclipse and to continue the light curve of this star that has been in the AAVSO observing program for over a century.   Elizabeth O. Waagen, August 2017

Mira variables are the longest-observed class of stars for which we have long-term quantitative data that allow us to study their behavior over centuries-long periods of time.  Fortunately for us, they're also easy to observe and monitor, having some of the largest amplitudes of all variables, and hundreds of them are bright enough that they're within reach of astronomers with modest telescopes.

                        STARS IN NEED OF OBSERVATIONS
                                      in 
    AAVSO BULLETIN 73:  Predicted Maxima and Minima of Long Period Variables for 2010

The stars listed below need additional observations. Please be aware that many of these 
stars are difficult to observe, and should be observed only by experienced observers. 
Please note that the symbol % after a star name indicates the star has fair to excellent 
CCDV or multicolor photometry but still needs visual observations. Because all of the 

  How to Use Bulletin 73

Introduction to Bulletin 73

Note to Users of 2010 Bulletin

AAVSO Bulletin Stars with 2000.0 Coordinates

Note: Stars are in Bulletin order. Coordinates are ICRS from Simbad.

Designation Name       R.A. 2000.0     Dec. 2000.0
0003-39     V SCL      00 08 37.34     -39 13 05.1
0004+51     SS CAS     00 09 36.5303   +51 34 00.873
0009+28     UW AND     00 14 10.930    +29 01 20.39
0010+46     X AND      00 16 09.57     +47 00 44.8
0010-32     S SCL      00 15 22.2650   -32 02 42.987
0014+44     VX AND     00 19 54.0171   +44 42 33.898
0017+55     T CAS      00 23 14.2716   +55 47 33.206
0017+26     T AND      00 22 23.146    +26 59 45.77

IMPORTANT NOTICE: Bulletin 73 was NOT prepared in the same way as in the past. 
READ THE INTRODUCTION before you use the Bulletin; contact AAVSO Headquarters 
for more precise dates for research.

Predicted MAXIMA of long period variables for February 2011
*0014+44      VX And         7.9-9.6     Feb 13?   
 0049+58      W Cas         <8.8-11.8>   Feb  5    
 0231+33      R Tri         <6.2-11.7>   Feb 17    
*0419+16      VX Tau   %@    9.7-(15.0   Feb 22?   
 0422+09      R Tau    %&   <8.6-14.2>   Feb 18