ASASSN-22ce (UGSU) (submitted to VSX)
"CV candidate, matches to PS1 g=21.6, g>17.8 on 2022-02-19.33, g=16.5 on 2022-02-21.30": https://www.astronomy.ohio-state.edu/asassn/transients.html ASASSN-22ce 20220219.341 <178g ASN ASASSN-22ce 20220221.306 165g ASN
Complete ASAS-SN Sky Patrol light curve and data (contaminated): https://asas-sn.osu.edu/sky-patrol/coordinate/5fd0d9af-3c86-4af0-b020-bb2fb3...
According to ATLAS forced photometry data the dwarf nova was already in outburst (orange mag. 16.7) on 2022 February 20.3802 UT It was fainter than omag. 17.6 on Feb. 19.4636 UT. So the current superoutburst began on 2022 February 19 or 20.
Further time-resolved photometry is encouraged.
Clear skies, Patrick ------- References: All-Sky Automated Survey for Supernovae (ASAS-SN) Sky Patrol: - Shappee et al., 2014ApJ...788...48S - Kochanek et al., 2017PASP..129j4502K Asteroid Terrestrial-impact Last Alert System (ATLAS): - Tonry et al., 2018PASP..130f4505T ----------- T. Kato wrote in vsnet-alert 26612:
ASASSN-22ce: new SU UMa-type dwarf nova
Itoh-san detected superhumps (0.3 mag) on Feb. 23. The period is slightly longer than 0.06 d.