AAVSO NEWS FLASH No. 21

              THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS
                   25 Birch Street, Cambridge, MA 02138 USA
                   Tel. 617-354-0484       Fax 617-354-0665
                          INTERNET: aavso@aavso.org

                        * * *  AAVSO NEWS FLASH  * * *

Subject: BZ UMa                                    No. 21

                                                   May 14, 1996
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BZ URSAE MAJORIS

The dwarf nova type (SU UMa subclass) cataclysmic variable BZ UMa is in 
outburst as indicated by the following observations:

                     AAVSO Observer      
    UT        Mag.     Initials          
                                                                               
MAY 6.1743   <14.5       HSG        
MAY 10.1965  <13.7       HSG        
MAY 13.2069  <13.7       BTH        
MAY 14.1938  <14.5       HSG        
MAY 14.2153   13.7       BTH        
MAY 14.2708   12.6       BTH        
MAY 14.3056   12.3       BTH        
MAY 14.3257   11.9       BTH        

The last outburst of BZ UMa recorded in the AAVSO International Database 
was in June 1995.  During this narrow outburst the star reached maximum 
magnitude 10.5 on June 14th.
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We thank the following contributors for the data that they have provided 
for this News Flash:

BTH - T. Burrows, USA
HSG - G. Hanson, USA

Please monitor BZ UMa and other variables closely and phone-in, fax, or 
e-mail your observations to the AAVSO.

Good observing!
Janet A. Mattei
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Symbols may include:  < = fainter than magnitude given (variable not seen)
                      : = uncertain
                   CCDV = Charge-coupled device with (V) filter


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                     observations@aavso.org

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If you would like data from the AAVSO International Database for
research purposes, please send your request to:

        Janet Mattei, AAVSO Director, at aavso@aavso.org

We look forward to including your observations in future editions
of AAVSO NEWS FLASH!
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