MASTER OT J005428.52-475548.0 outburst
ATel #13855; O. Gress, V. Lipunov (Lomonosov MSU), D. Buckley (SAAO), E. Gorbovskoy, V. Kornilov, I. Gorbunov, N. Tiurina, O. Gress, A. Kuznetsov, F. Balakin, V. Vladimirov, K. Zhirkov, E. Minkina, D. Zimnukhov, A. Chasovnikov, V. Senik, D. Kuvshinov, T. Pogrosheva, D. Vlasenko, 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), A. Gabovich, Yu. Sergienko, V. Yurkov(BSPU), V. Shumkov
on 2 Jul 2020; 20:08 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)
Subjects: Optical, Request for Observations, Cataclysmic Variable, Supernovae, Transient, Variables
MASTER OT J005428.52-475548.0 detection - outburst with ampl>4.5m
AT2020nwi
MASTER-SAAO auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L )
discovered OT source at (RA, Dec) = 00h 54m 28.52s -47d 55m 48.0s on 2020-07-02.12272 UT.
The OT unfiltered magnitude is 17.6m (mlim=19.7).
The OT is seen in 9 images. There is no minor planet at this place.
We have reference image without OT on 2017-10-22.83036 UT with unfiltered mlim= 20.5m,
and with optical source with m=21.1 on 2018-10-04 20:58:31 - far host galaxy /usual state of OT/last outburst? There is extended source in nearest neighbourhood at POSS images (PSN?), and GALEX source at these coordinates (dwarf nova outburst?).
Spectral observations are required.
The discovery and reference images are available at:
http://master.sai.msu.ru/static/OT/005428.52-475548.0.png
MASTER Global Robotic Net
