Hi,
The dwarf nova ASASSN-19sk is in outburst according to NMW survey images (135mm f/2.0 lens + unfiltered ST-8300M CCD):
YYYYMMDD.D(UT) mag 20211107.7905 12.6CV
The ASAS-SN lightcurve shows the outburst started on 2021-11-07.216 https://asas-sn.osu.edu/sky-patrol/coordinate/c260fd98-9a82-42ea-b581-36d8b7... The previous outburst was in July 2019, as discussed in these vsnet-alert messages: http://ooruri.kusastro.kyoto-u.ac.jp/mailarchive/vsnet-alert/23430 http://ooruri.kusastro.kyoto-u.ac.jp/mailarchive/vsnet-alert/23433 http://ooruri.kusastro.kyoto-u.ac.jp/mailarchive/vsnet-alert/23435
VSX record: https://www.aavso.org/vsx/index.php?view=detail.top&oid=844295
Best wishes, Kirill Sokolovsky, Stanislav Korotkiy, Olga Smolyankina