MASTER OT J195631.02-721606.7 discovery - new optical source with outburst amplitude more than 5.5m
ATel #14698; V. Shumkov, V. Lipunov, V. Kornilov, E. Gorbovskoy, P. Balanutsa, I. Gorbunov, O. Gress, N. Tyurina, A. Kuznetsov, V. Vladimirov, D. Vlasenko, D. Zimnukhov, V. Senik, V. Shumkov, A. Chasovnikov, E. Minkina, V. Topolev, D. Kuvshinov, K. Zhirkov, T. Pogrosheva (Lomonosov Moscow State University), D. Buckley (SAAO), R. Podesta, F. Podesta, C. Lopez, C. Francile (Observatorio Astronomico Felix Aguilar OAFA), R. Rebolo, M. Serra (The Instituto de Astrofisica de Canarias), N. Budnev (Irkutsk State University, API), A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory), A. Gabovich, V. Yurkov (Blagoveschensk Educational State University)
on 11 Jun 2021; 06:29 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)
Subjects: Optical, Request for Observations, Cataclysmic Variable, Transient, Variables
MASTER OT J195631.02-721606.7 discovery- new OT with ampl>5.5
AT2021pky
MASTER-OAFA auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L )
discovered OT source at (RA, Dec) = 19h 56m 31.02s -72d 16m 06.7s on 2021-06-11.12771 UT.
The OT unfiltered magnitude is 16.5m (mlim=18.6).
The OT is seen in 5 images with 2h difference between extreme images. There is no minor planet at this place.
We have reference image on 2017-03-29.33215 UT with unfilter 19.8m, 2021-05-30 08:07:59 with mlim=19.3.
Spectral observations are required.
The discovery and reference images are available at:
http://master.sai.msu.ru/static/OT/195631.02-721606.7.png
MASTER Global Robotic Net
