[vsnet-outburst 11774] GX Cas: positive period derivative!

[Taichi Kato]

GX Cas: positive period derivative!

   Okayama U. of Sci. team has reported further observations.
It is now evident that superhump period is indeed increasing.
The Pdot is +21(3)*10^(-5).  This is probably the first instance of
such a large Pdot being observed in a long-period (inside or close to
the period gap) SU UMa-type dwarf nova!