MASTER: outburst detection with ampl>5.1m
ATel #13350; O. Gress, E. Gorbovskoy, V. Lipunov (Lomonosov MSU), R. Rebolo, M. Serra(The Instituto de Astrofisica de Canarias), V. Kornilov, N. Tiurina, P. Balanutsa, I. Gorbunov, E. Minkina, A. Kuznetsov, V. Vladimirov, T. Pogrosheva, D. Vlasenko, D. Zimnukhov, D. Cheryasov, V. Senik, V. Shumkov(Lomonosov MSU), R. Podesta, C. Lopez, F. Podesta, C. Francile (OAFA), H. Levato(ICATE), D. Buckley(SAAO), O. A. Gres, N. M. Budnev, O. Ershova(ISU, API), A. Tlatov, D. Dormidontov(Kislovodsk Solar Station of the Pulkovo Observatory),V. Yurkov, A. Gabovich, Yu. Sergienko(Blagoveschensk ESU)
on 14 Dec 2019; 12:49 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)
Subjects: Optical, Request for Observations, Cataclysmic Variable, Transient, Variables
MASTER OT J064829.56+021205.9 discovery- preliminary dwarf nova outburst with ampl>5.1
MASTER-IAC auto-detection system discovered OT source at (RA, Dec) = 06h 48m 29.56s +02d 12m 05.9s on 2019-12-14.17137 UT.
The OT unfiltered magnitude is 16.9m (limit 17.5m).
The OT is seen in 2 images. There is no minor planet at this place.
We have reference image without OT on 2018-04-03.85720 UT with unfiltered magnitude limit 19.1m.
There is no USNO-B1 sources, so the amplitude of outburst is more then 5.1m (but there is PanSTARRs star witt rmag=21.076 in VIZIER database
Spectral observations are required.
The discovery and reference images are available at:
http://master.sai.msu.ru/static/OT/064829.56021205.9.png
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