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[vsnet-alert 155] BC UMA OUTBURST ENDED



              BC UMA OUTBURST HAS ENDED

The following observations indicate that the recent outburst of
BC UMa, reported in AAVSO Alert Notice 210, has ended.  This outburst
was a short one, lasting a little more than 2 days.

BC UMA 950702.965  UT <14.0  G. Poyner, BAA,AAVSO
       950706.1576     14.0  D. York, AAVSO
        950706.1694     13.9  York
       950706.1868     13.8  York
       950706.2076     13.4  York
       950706.2292     13.0  York
       950707.10       12.4  G. Dyck, AAVSO
       950707.1542     13.2  York
       950707.1708     13.2  York
       950707.2347     13.0  T. Burrows, AAVSO
       950708.23      <13.6  Burrows
       950708.24      <13.6  Burrows
       950708.25      <13.6  Burrows
       950708.89      <13.6  J. Gunther, AFOEV, AAVSO (via VSNET)
       950710.2535    <15.5  R. Royer, AAVSO
All observations were made using the AAVSO sequence.

BC UMa has been closely monitored by the AAVSO since 1971.  Observations
in the AAVSO International Database indicate that BC UMa has had only the 
following four long outbursts (superoutbursts?) since 1971:   May 1982, 
September 1990, August 1992, and April 1994, each lasting between 7 to 9 days. 
In addition, there are several unconfirmed, single observations, in the 
BC UMa data files.  From the short duration of the recent well-monitored 
outburst, there is a possibility that some of the short outbursts may have 
been missed, and that the single, positive observations may be part of short 
outbursts.
    
Kind regards,
Janet A. Mattei

**************************************************************************
Janet A. Mattei                           Telephone: 617-354-0484
AAVSO, Director                                 FAX: 617-354-0665
25 Birch Street                              e-mail: jmattei@aavso.org 
Cambridge, MA 02138
USA
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