[vsnet-alert 14503] ER UMa: the superhump period changed?

[Ohshima]

ER UMa: the superhump period changed?

 We have received further observations from Akazawa-
san. According to these data, the superhumps period
seems not to be stable, longer than usual (~ 0.07 d).
Perhaps this is due to the superposion of negative 
and positive superhumps. At any rate, in such stage,
the blank will affect the investigation of development
of superhumps. Further observations are encouraged!