[vsnet-alert 15442] GR Ori: period derivative

Taichi Kato tkato at kusastro.kyoto-u.ac.jp
Tue Feb 26 10:15:16 JST 2013

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.

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