[vsnet-alert 22557] ASASSN-18vn: stage A-B transition

[Yasuyuki WAKAMATSU]

ASASSN-18vn: stage A-B transition

Josch Hambsch and Berto Monard reported further observations.
The object showed the clear stage A-B transition on September 22.
The (stage B) superhump period is now 0.0576(3) d and the amplitude
is 0.2 mag. The period of stage A superhumps is 0.05808(2) d.
Further observations are needed to derive the more accurate period of
stage B superhumps and Pdot.