It needs to be checked whether some (or all) of the mag. 13 observations since January 9 were made during eclipses. Can someone provide a current ephemeris?
Regards, Patrick ------- Am Sonntag, 16. Januar 2022, 10:38:18 MEZ hat Patrick Schmeer via vsnet-alert vsnet-alert@ooruri.kusastro.kyoto-u.ac.jp Folgendes geschrieben:
EX Hydrae (UG+NLDQ+E) Intermediate polar, eclipsing, orbital period: 0.068234 d (98.257 min)
From "activity at a glance (Jan 16)" (T. Kato, vsnet-outburst 28234): 20220103.7814 133:cG (Yutaka Maeda) 20220107.8029 130:cG (Yutaka Maeda) 20220107.853 132 (Hiroyuki Maehara) 20220108.867 100 (Hiroyuki Maehara) 20220109.581 98 (Rod Stubbings) 20220109.7724 107cG (Yutaka Maeda) 20220109.7724 107cG (Yutaka Maeda) 20220111.585 128 (Rod Stubbings) 20220111.862 126 (Hiroyuki Maehara) 20220115.853 118 (Hiroyuki Maehara)
Recent ASAS-SN Sky Patrol (Shappee et al. 2014ApJ...788...48S and Kochanek et al. 2017PASP..129j4502K) light curve and data: https://asas-sn.osu.edu/sky-patrol/coordinate/3952b0d4-b5a1-4d54-bdda-c209b4... HYAEX 20220106.3562 13.19g ASN HYAEX 20220110.2402 11.14g ASN HYAEX 20220111.5182 13.02g ASN HYAEX 20220113.0232 12.75g ASN HYAEX 20220114.0460 11.57g ASN
Precursor outburst followed by a superoutburst? However, in this case the precursor outburst would have been much brighter than the superoutburst.
Time-resolved photometry is urgently required.
Clear skies, Patrick