American Association of Variable Star Observers (AAVSO)
Tue, 07/03/2018 - 16:45

The bright (currently V~7.5) symbiotic variable CH Cyg is undergoing a fading episode.

AAVSO Alert Notice 639 requests coverage of CH Cyg during and after its current fading. Please see the notice for details and observing instructions.

There is a second thread on this event located in the Cataclysmic Variables forum (although CH Cyg is not a CV) at

Many thanks, and Good observing,

Elizabeth O. Waagen, AAVSO HQ