[vsnet-alert 1055] optical counterpart of Cep X-4

[Taichi Kato <tkato>]

   IAUC No. 6698 (1997 July 11) tells that P. Roche et al. discovered a
14-th mag Be-star as the optical counterpart of the transient X-ray pulsar,
Cep X-4 = GS 2138+56.  The coordinates are:

   21h 39m 30s.6  (J2000.0)
   +56o 59' 12".9
       V=14.2

   A search for optical variability would be interesting.

   For more information of the object, see the relevant IAUC issue.

Regards,
Taichi Kato

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