[vsnet-alert 23044] ASASSN-19ds: eclipsing novalike object

[Taichi Kato]

ASASSN-19ds: eclipsing novalike object

> I have analyzed my 4 nights of observations using PERANSO and find a period
> of the eclipses of 0.139 +/- .001.

   Sorry for overlooking the data.

   It has become evident that variations recorded in
the past ASAS-SN data can be explained by eclipses
(not outbursts).

Min(BJD) = 2458222.43032(5) + 0.139035164(12) E

Phase-averaged plot of ASAN-SN data:
http://www.kusastro.kyoto-u.ac.jp/~tkato/tmp/ASASSN-19ds_phase.jpg

   The lack of orbital humps suggests a high mass-transfer
(novalike) object.