[vsnet-alert 2259] GX Cas possible superoutburst

[Taichi Kato <tkato>]

GX Cas possible superoutburst

  The long-period (long Porb) SU UMa-type dwarf nova, GX Cas, is undergoing
a outburst.  The known supercycle suggests that the current outburst may be
a superoutburst (Nogami et al. 1998, PASJ 50, 411 predicts the next super-
outburst around Nov. 10), or a normal one just preceding the expected
superoutburst.  Follow-up observations are encouraged in order to confirm
the prediction.  The latest superoutburst of GX Cas was reported in 1997
October (Takahashi), reaching mv=12.8.

  YYMMDD(UT)   mag  observer
  981001.860  <152  (T. Kinnunen)
  981002.769  <152  (T. Kinnunen)
  981003.069  <152  (G. Poyner)
  981003.790  <145  (T. Kinnunen)
  981005.769  <141  (T. Kinnunen)
  981006.760   137  (T. Kinnunen)

Regards,
Taichi Kato

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