MASTER OT J224524.92+211742.0: bright high amplitude OT
ATel #13934; K. Zhirkov, V. Lipunov (Lomonosov MSU), D. Buckley (SAAO), E. Gorbovskoy, V. Kornilov, I. Gorbunov, N. Tiurina, O. Gress, A. Gabovich, A. Kuznetsov, F. Balakin, V. Vladimirov, A. Chasovnikov, A. Pozdnyakov, E. Minkina, D. Zimnukhov, V. Senik, D. Kuvshinov, T. Pogrosheva, D. Vlasenko, V. Shumkov, D. Cheryasov (Lomonosov Moscow State University, SAI, Physics Department), R. Podesta, F. Podesta, C. Francile (OAFA), H. Levato (ICATE), R. Rebolo, M. Serra (IAC), N. Budnev (ISU, API), A. Tlatov (KSS of the Pulkovo Observatory), Yu. Sergienko, V. Yurkov(BSPU)
on 10 Aug 2020; 21:27 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)
Subjects: Optical, Request for Observations, Cataclysmic Variable, Transient, Variables
MASTER OT J224524.92+211742.0 detection - outburst with ampl>7m
AT2020ray
MASTER-IAC auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L )
discovered OT source at (RA, Dec) = 22h 45m 24.92s +21d 17m 42.0s on 2020-08-10.10981 UT.
The OT unfiltered magnitude is 17.0m
(mlim=18.1).
The OT is seen in 2 images at morning of 10th Aug and on 2 images at evening (automatic unfiltered 17.3+-0.1). There is no minor planet at this place.
We have reference image on 2015-10-06.91876 UT with unfiltered mlim= 20.0m.
There is only Sloan star in VIZIER database inside 5" (in 0.26") with rmag=24.368 (close to MASTER unfiltered). It means more then 7mag of current outburst amplitude.
Spectral observations are required.
The discovery and reference images are available at:
http://master.sai.msu.ru/static/OT/224524.92211742.0.png
MASTER Global Robotic Net
