MASTER: outburst with ampl>6m
ATel #13736; T. Pogrosheva, V. Lipunov (Lomonosov MSU), D. A. H. Buckley (SAAO), K. Zhirkov, V. Kornilov, E. Gorbovskoy, A. Chasovnikov, O. Gress, N. Tiurina, P. Balanutsa, I. Gorbunov, A. Kuznetsov, V. Vladimirov, D. Vlasenko, F. Balakin, D. Zimnukhov, D. Cheryasov, V. Senik, E. Minkina, V. Grinshpun, V. Shumkov, V. Topolev, A. Pozdnyakov (Lomonosov MSU), N. M. Budnev(ISU, API), V. Yurkov, A. Gabovich, Yu. Sergienko(Blagoveschensk ESU), R. Rebolo, M. Serra-Riscart, (IAC), R. Podesta, F. Podesta, C. Francile (OAFA), H. Levato (SJNU), A. Tlatov, D. Dormidontov(Kislovodsk Solar Station of the Pulkovo Observatory)
on 15 May 2020; 12:53 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)
Subjects: Optical, Cataclysmic Variable, Quasar, Transient, Variables
MASTER OT J150750.83-105830.8 detection - outburst with ampl>6m
AT2020jzj
MASTER-IAC auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L )
discovered OT source at (RA, Dec) = 15h 07m 50.83s -10d 58m 30.8s on 2020-05-14.04251 UT.
The OT unfiltered magnitude is 16.5m (mlim=17.7).
The OT is seen at 4 images:
2020-05-04 03:41:15 15.9
2020-05-14 01:01:13 16.5
2020-05-15 02:35:25 16.7
There is no minor planet at this place.
We have reference images without OT at 2018-02-22.24552 UT with unfiltered mlim=19.8m.
Spectral observations are required.
There is USNO-B1 source with blue B2=21.47 in history (and 22m POSS limit in R), it gives 6mag amplitude of current outburst of CV or QSO flare (SDSS DR10 catalogue of candidate quasars; Brescia+, 2015)
The discovery and reference images are available at:
http://master.sai.msu.ru/static/OT/150750.83-105830.8.png
MASTER Global Robotic Net
