[vsnet-alert 22370] ASASSN-18ey = MAXI J1820+070: change into double-peaked humps

[Yasuyuki WAKAMATSU]

ASASSN-18ey = MAXI J1820+070: change into double-peaked humps

Tonny Vanmunster, Peter Nelson, Stephen Brincat, Josch Hambsch,
Crimean Astrophys. Obs. team, Vihorlat observatory team (Pavol A.
Dubovsky, Tomas Medulka), Itoh-san, Geoff Stone and Lew Cook
reported further observations.

Our PDM analysis of the most recent data shows that the period
of this object is 0.6824(4) d, and as indicated in vsnet-alert 22368,
the superhump profile likely started to change into the double-peaked
one. This object obviously entered a different state. The amplitude of
this modulation is ~0.2 mag and the brightness is about 13.4 mag.

Further observations are strongly encouraged.