MASTER: bright outburst with ampl>6m
ATel #13524; T. Pogrosheva, V. Lipunov, V. Kornilov, O. Gress, N. Tyurina, P. Balanutsa, E. Gorbovskoy, A. Kuznetsov, V. Vladimirov, D. Vlasenko, I. Gorbunov, D. Cheryasov, D. Zimnukhov, V. Senik, A. Chasovnikov, D. Kuvshinov, V. Shumkov, F. Balakin, K. Zhirkov(Lomonosov Moscow State University, SAI, Physics Department), R. Podesta, C. Lopez, F. Podesta, C. Francile(Observatorio Astronomico Felix Aguilar OAFA), H. Levato(Instituto de Ciencias Astronomicas, de la Tierra y del Espacio ICATE), R. Rebolo, M. Serra(The Instituto de Astrofisica de Canarias), D. Buckley(South African Astronomical Observatory), N. M. Budnev, O. Ershova (Irkutsk State University, API), V. Yurkov, A. Gabovich, Yu. Sergienko(Blagoveschensk Educational State University), A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory)
on 26 Feb 2020; 15:37 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)
Subjects: Optical, Request for Observations, Cataclysmic Variable, Transient, Variables
MASTER OT J184625.50-531932.8 discovery - outburst with ampl>6m
MASTER-OAFA auto-detection system ( Lipunov et al., "MASTER Global Robotic Net",
Advances in Astronomy, 2010, 30L )
discovered OT source at (RA, Dec) = 18h 46m 25.50s -53d 19m 32.8s on 2020-02-25.21804 UT.
The OT unfiltered magnitude is 16.1m (mlim=17.2).
The OT is seen in 3 images in MASTER-OAFA and in 2 images at 2020-02-25 01:42:27 with m_OT=15.9 in MASTER-SAAO.
We have reference image on 2017-04-05.29013 UT with unfiltered mlim 20.0m.
There is only GSC2.3.2 source with blue jmag=22m, it means, 22m limit in history and more then 6.1m of current outburst amplitude.
Spectral observations are required.
The discovery and reference images are available at:
http://master.sai.msu.ru/static/OT/184625.50-531932.8.png
MASTER Global Robotic Net
