MASTER: bright outburst with ampl>6.4m
ATel #13537; 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 2 Mar 2020; 18:13 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)
Subjects: Optical, Request for Observations, Cataclysmic Variable, Transient
MASTER OT J220220.89+814532.5 discovery - outburst with ampl>6.4m
MASTER-Tunka auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L )
discovered OT source at (RA, Dec) = 22h 02m 20.89s +81d 45m 32.5s on 2020-03-02 17:22:57UT.
The OT unfiltered magnitude is 17.5m (mlim=18.5).
The OT is seen in 2 images. There is no minor planet at this place.
MASTER automatic photometry and reference mlim for this OT are
2020-02-17 02:48:22UT mlim=19.3 MASTER-Tavrida (no OT)
2020-02-17 22:01:08UT mlim=20.0 MASTER-Kislovodsk (no OT)
2020-02-18 02:52:51UT m_OT~19.5 MASTER-Tavrida
2020-02-18 20:56:07UT m_OT=15.6 MASTER-Kislovodsk
2020-02-19 00:40:56UT m_OT=15.7 MASTER-IAC
2020-02-19 00:29:01UT m_OT=15.7 MASTER-IAC
2020-02-19 03:26:33UT m_OT=15.7 MASTER-Tavrida
2020-03-02 17:26:16UT m_OT=17.5 MASTER-Tunka
2020-03-02 17:22:57UT m_OT=17.5 MASTER-Tunka
There is no sources in POSS images (22m limit), it means >6.4 of current outburst amplitude (MASTER unfiltered m=0.2B+0.8R by USNO-B1 thousands field stars)
Spectral observations are required.
MASTER images are available at:
http://master.sai.msu.ru/static/OT/220220.89814532.5.png
MASTER Global Robotic Net
