variable

The following articles contain useful and interesting information on individual variable stars. Many of the most popular stars in the AAVSO observing program are featured.  From December 1998 until December 2002, the collection of articles comprised the "Variable Star of the Month" series. Since that time, they have all been published as part of the "Variable Star of the Season" (VSOTS) collection.

                        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.

  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.

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?

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 January 2011
 0017+26      T And         <8.5-13.8>   Jan 14    
*0027+25A     TU And        <8.5-12.5>   Jan 19?

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 December 2010
 0010-32      S Scl    %#   <6.7-12.9>   Dec 24    
*0022+30      YZ And        10.1-15.9    Dec 17?   
 0044-35      X Scl    %@  <10.6-(14.2>  Dec 31    
 0046+33      RR And        <9.1-15.1>   Dec  1    
*0127+46      SX And         8.6-14.6    Dec 12?

IMPORTANT NOTICE: Bulletin 73 was NOT prepared in the same way as in the past.