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[vsnet-alert 1280] Possible superoutburst of GX Cas

Possible superoutburst of GX Cas

   As notified by several observers, the SU UMa-type dwarf nova GX Cas
is undergoing a very bright, likely super, outburst.

  YYMMDD(UT)   mag  observer
  971018.480  <145  (G. Hanson)
  971018.810  <152  (G. Poyner)
  971019.128  <152  (G. Hanson)
  971020.166  <152  (G. Hanson)
  971021.783   136  (G. Poyner)
  971021.790   133  (J. Pietz)
  971021.850   130  (T. Kinnunen)

   The latest superoutburst of GX Cas occurred in 1996 Sept. - Oct.,
reaching mv=13.3 (J. Pietz).  Time-resolved observations are highly
encouraged for this SU UMa star, having one of the longest superhump
periods.  For more information of GX Cas, see

http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/DNe/gxcas.html

   For a most recent compilation of parameters of SU UMa stars, see Nogami
et al. (1997, PASP in press); preprint available from:

http://ftp.kusastro.kyoto-u.ac.jp/pub/vsnet/preprints/SX_LMi

Regards,
Taichi Kato

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