[vsnet-alert 19817] V803 Cen: stage B superhumps

[Keisuke Isogai]

V803 Cen: stage B superhumps

     Berto Monard and Josch Hambsch have reported new observations.
After the precursor outburst  on BJD 245715.24 (May 6), in which we
could not see clear superhumps, we could detect the superhumps
from BJD 245715.56. The superhumps between BJD 2457515.56-.76
showed double-wave modulations and may be the stage A. But it is
difficult to measure its period because of few data (only 59 points).
After BJD 2457516.5, we could detect the stage B superhumps with
the gradual decreasing amplitudes and the almost constant period
of 0.018673(2) d.
     According to our observations, the duration of the stage A of V803 Cen
may be less than one day. This value is consistent with one of CR Boo
(Isogai et al. in submitted).
     In order to observe the transition between stage B-C and confirm
above discussion, further observations are encouraged.

     By the way, the date of this superoutburst which was predicted in
vsnet-alert 19787 was May 5 and the gap is only one day.
If the supercycle is constant, the next superoutburst is July 15.