MASTER: bright fast high amplitude OT
ATel #13812; T. Pogrosheva, V. Lipunov, E. Gorbovskoy, V. Kornilov, I. Gorbunov, N. Tiurina, O. Gress, P. Balanutsa, A. Kuznetsov, F. Balakin, V. Vladimirov, K. Zhirkov, D. Zimnukhov, A. Chasovnikov, V. Senik, E. Minkina, D. Kuvshinov, D. Vlasenko, D. Cheryasov (Lomonosov Moscow State University, SAI, Physics Department), R. Podesta, F. Podesta, C. Francile (OAFA), H. Levato (ICATE), R. Rebolo, M. Serra (IAC), D. Buckley (SAAO), N. Budnev (ISU, API), A. Tlatov (KSS of the Pulkovo Observatory), A. Gabovich, Yu. Sergienko, V. Yurkov(BSPU), V. Shumkov
on 16 Jun 2020; 22:24 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)
Subjects: Optical, Request for Observations, Cataclysmic Variable, Transient, Variables
MASTER OT J192856.03-550546.9 discovery- bright (15.0) fast (<10min) high amplitude (>5m) OT
MASTER-OAFA auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L )
discovered OT source at (RA, Dec) = 19h 28m 56.03s -55d 05m 46.9s on 2020-06-14.33005 UT.
The OT outburst magnitudes (unfiltered) are
Date,T_start_expos.
2020-06-14 07:51:45 mlim=19.6
2020-06-14 07:55:16 m_OT=15.0
...another target (3 images)....
2020-06-14 08:05:49 m_OT=16.2
2020-06-14 08:09:21 mlim=19.6
This OT has Gal. latitude: -27.741738 Gal. longitude: 342.547803.
We have reference images since 2015 without outburst and with m~19.8-20.2 of this object or of the object at line of sight.
There are 2 GAIA optical sources in 0.5" and 1.8" (VIZIER) with distances 800pc and 1872pc.
This OT is not red dwarf flare.
Deep images and spectral observations are required.
MASTER Global Robotic Net
