MASTER: dwarf nova outburst, ampl>4.6
ATel #11720; P. Balanutsa, V. Lipunov (Lomonosov MSU), R. Rebolo, M. Serra-Ricart (IAC), V. Kornilov, E. Gorbovskoy, N. Tiurina, I. Gorbunov, A. Kuznetsov, V. Chazov, O. Gress, D. Vlasenko, V. Vladimirov, D. Zimnukhov, V. Senik, T. Pogrosheva, V. Shumkov (Lomonosov Moscow State University, SAI) A. Gabovich (BSPU)
on 15 Jun 2018; 19:45 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)
Subjects: Optical, Request for Observations, Cataclysmic Variable, Transient, Variables
MASTER OT J204902.95+372753.1 discovery - OT, preliminary dwarf nova outburst with ampl>4.6
MASTER-IAC auto-detection system discovered OT source at (RA, Dec) = 20h 49m 02.95s +37d 27m 53.1s on 2018-06-11.14725 UT.
The OT unfiltered magnitude is 17.4m (mlimit 19.1m).
The OT is seen in 6 images (2018-06-11 03:30:14.617-04:08:37.651). There is no minor planet at this place.
We have reference image without OT on 2014-08-2014-08-23 20:30:19 UT with 19.7 unfiltered magnitude limit (MASTER-Kislovodsk) .
There is only PanSTARRS star, it means 22m Palomar limit, and more then 4.6m of current outburst amplitude (MASTER W=0.2B+0.8R by USNO-B1)
Spectral observations are required.
The discovery and reference images are available at:
http://master.sai.msu.ru/static/OT/204902.95372753.1.png
List of Optical Transients discovered by MASTER
MASTER Global Robotic Net
