MASTER: OT with ampl>5.3m
ATel #12618; O. Ershova (ISU), V. Lipunov, E. Gorbovskoy, N. Tyurina, V. Kornilov, D. Vlasenko, V. Vladimirov, D. Zimnukhov, A. Kuznetsov, P. Balanutsa, A. Chasovnikov, V. Topolev, K. Zhirkov, A. Pozdnyakov, D. Kuvshinov (Lomonosov MSU), R. Podesta, C. Lopez, C. Francile, F. Podesta (OAFA, SJNU), H. Levato (ICATE, SJNU), R. Rebolo, M. Serra, N. Lodieu, G. Israelian, L. Suarez-Andres (IAC), D. Buckley (SAAO), O. Gress, N. M. Budnev (API ISU), V. Yurkov, A. Gabovich, Yu. Sergienko, D. Kobcev (BSPU), A. Tlatov, V. Senik, D. Dormidontov (KSS of Pulkovo observatory)
on 1 Apr 2019; 12:29 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)
Subjects: Optical, Request for Observations, Cataclysmic Variable, Transient, Variables
MASTER OT J225444.37+755500.2 detection - outburst with ampl>5.7m
MASTER-Tavrida auto-detection system discovered OT source at (RA, Dec) = 22h 54m 44.37s +75d 55m 00.2s on 2019-03-31.97146 UT.
The OT unfiltered magnitude is 16.3m (limit 19.3m).
The OT is seen at 3 unfiltered images in MASTER-Tavrida (16.3m), 3 images in MASTER-Tunka (since 2019-03-31 21:12:40.848UT with mOT=16.3m), and at 1 MASTER-Kislovodsk also unfiltered image at 2019-04-01 01:19:27.89UT with m_OT=16.3.
We have reference image without OT on 2018-04-16.97328 UT with unfiltered magnitude limit 18.1m.
There is GSC 2.3.2 and PanSTARRS optical source, i.e. 22m POSS limit in history and more then 5.7m of current outburst amplitude
Spectral observations are required.
The discovery and reference images are available at:
http://master.sai.msu.ru/static/OT/MASTEROTJ225444.37+755500.2.jpg
MASTER Global Robotic Net
