[vsnet-alert 25860] ASASSN-20gx: multiple rebrightenings on fading tail

[Denis Denisenko d.v.denisenko@gmail.com via vsnet-alert]

Following [vsnet-alert 25853]. Taichi Kato wrote:

>    According to the ZTF data, this object showed
> (very short) multiple rebrightenings on a fading tail.
> The main superoutburst (if present) was not recorded by ZTF.

Position: 23 49 30.14 +22 01 29.6

ZTF Lasair online data: https://lasair.roe.ac.uk/object/ZTF20abgbxco/

Again, ATLAS forced photometry server (Tonry et al., 2018) has additional
points showing two more rebrightenings before the 2020 July 07 highest peak
observed by ZTF. A very unusual outburst light curve:
http://scan.sai.msu.ru/~denis/ASASSN-20gx-2020-SO-ATLAS.gif

Unfortunately there is a gap in ATLAS data from 2020 June 09.61 (last point
before the outburst) to June 21.56 UT.

There was another past outburst in December 2011 - January 2012 in Catalina
Sky Survey Data (Drake et al., 2004).
http://nesssi.cacr.caltech.edu/cgi-bin/getcssconedb_id.cgi?ID=1121121051619&OUT=csv&SHORT=short&PLOT=plot

Denis Denisenko