[vsnet-alert 13554] V503 Cyg : negative superhumps?

[Ohshima]

V503 Cyg : negative superhumps?

 We have received further observations from Crimean Astrophy. Obs.
According to these observations, the period of the variation 
at minimum is not so stable. Although negative superhumps were reported
to be seen in the previous mail, the data newly recieved show longer 
variations (0.09 - 0.10 d) sometimes appeared.
 
 More observations are required in order to follow this variation of
period. Further observations are encouraged!