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MASTER: bright PSN in UGC05015

ATel #8077; V. Shumkov, V. Lipunov, E. Gorbovskoy, V. Kornilov, P. Balanutsa, N. Tiurina, A. Kuznetsov, I. Gorbunov, D. Vlasenko (M. V. Lomonosov Moscow State University, SAI), A. Tlatov, V. Senik D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory), O. Gress, N. Budnev, K. Ivanov (Irkutsk State University, Applied Physics Institute), Yu. Sergienko, A. Gabovich, V. Yurkov (Blagoveschensk Educational State University), V. Krushinskiy (Ural Federal University), D. Buckley, S. Potter, M. Kotze (South African Astronomical Observatory), R. Rebolo, M. Serra-Ricart, N. Lodieu, G. Israelian (The Instituto de Astrofisica de Canarias)
on 21 Sep 2015; 08:11 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)

Subjects: Optical, Request for Observations, Cataclysmic Variable, Supernovae, Transient

MASTER OT J092544.53+341636.1 discovery - bright SN in UGC05015 or dwarf nova outburst with Ampl>6m

MASTER-Kislovodsk auto-detection system ( Lipunov et al., Advances in Astronomy, MASTER Global Robotic Net, 2010 ) discovered OT source at (RA, Dec) = 09h 25m 44.53s +34d 16m 36.1s on 2015-09-21.07233 UT.
The OT unfiltered magnitude is 15.6m (the limit is 17.9m).
There are 2 images of this PSN. There is no minor planet at this place. We have reference image without OT on 2014-12-21.09661 UT with unfiltered magnitude limit 20.2m.
This PSN is in 42.8"W, 1.5"S from the center of UGC05015 galaxy (Btot=15.5).
Spectral observations are required.
The discovery and reference images are available at http://master.sai.msu.ru/static/OT/MASTEROTJ092544.53341636.1.png

Taking into account the N9GO008958 star (GSC) with blue j=21.5, this OT has a possibility to be a dwarf nova outburst with Ampl>6m.

List of Optical Transients discovered by MASTER

MASTER Global Robotic Net