Outburst of CH UMa (1996 Nov.)

The long-period SS Cyg-type dwarf nova CH UMa is undergoing a major outburst as indicated by the following observations.

1996 Nov. 20.960    13.6  G. Poyner
          21.042    13.5  G. Poyner
          21.085    13.5  G. Poyner
          22.7472   12.9  M. Westlund

This dwarf nova is unique in that it usually shows a very slow rise to maximum -- probably due to its long orbital period. Some of bright outbursts may reach V ~ 11.

The outburst light curve

Gradual rise and rapid decline characterize the long outburst of this dwarf nova.

Recent light curve

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