[vsnet-outburst 21133] ASASSN-17jf: orbital and superhump periods

[Keisuke Isogai]

ASASSN-17jf: orbital and superhump periods

     Berto Monard and Josch Hambsch have reported further observations.
According to the eclipses, the updated orbital period is 0.056789 (2) d
(the reported period in vsnet-alert 21257 seems the superhump one).
We can detect the stage A-B transition. The periods of the stage A and B
superhump are 0.05816 (1) and 0.057845 (6) d, respectively. The mass
ratio estimated by using these periods is 0.0624 (6) and the Pdot of the
stage B is 5.7(7) * 10^(-5).
     Further observations are encouraged.