[vsnet-campaign-dn 9291] GR Ori: period derivative

[Taichi Kato]

GR Ori: period derivative

   We have received further observation from Enrique de Miguel,
Astrokolkhoz team (Tom Krajci and Josch Hambsch), Berto Monard,
Akazawa-san, Itoh-san, Willian Stein and Peter Nelson.
The mean superhump period is 0.058279(11) d.
There is weak evidence of a positive Pdot = +2(2)*10^(-5)
which needs to be confirmed by further observation.