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MASTER: SN in SDSS galaxy

ATel #7270; P. Balanutsa, V. Lipunov, E. Gorbovskoy, N. Tiurina, S. Antipin, V. Kornilov, A. Kuznetsov, V. Chazov, V. Vladimirov (Lomonosov Moscow State University, SAI), S. Potter, A. Kniazev, M. Kotze (The South African Astronomical Observatory), O. Gress, N. Budnev, K. Ivanov, S. Yazev, V. Poleshchuk, E. Konstantinov, O. Chuvalaev (Irkutsk State University), A. Tlatov, D. Dormidontov, V. Senik, A. Parkhomenko (Kislovodsk solar station of the Pulkovo observatory RAS), D. Buckley, S. Potter, A. Kniazev, M. Kotze (The South African Astronomical Observatory),V. Yurkov, Y. Sergienko, A. Gabovich (Blagoveshchensk Educational University), V. Krushinsky, I. Zalozhnih, A. Popov, A. Bourdanov (Ural Federal University)
on 22 Mar 2015; 22:21 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)

Subjects: Optical, Request for Observations, Supernovae, Transient

MASTER OT J131847.92+672030.3 discovery - possible SN in SDSS galaxy J131848.80+672028.6

MASTER-Tunka auto-detection system ( Lipunov et al., Advances in Astronomy, MASTER Global Robotic Net, 2010 ) discovered OT source at (RA, Dec) = 13h 18m 47.92s +67d 20m 30.3s on 2015-03-22.73999 UT.

The OT unfiltered magnitude is 18.4m (the limit is 20.2m).

There are 3 images with OT . We have reference image without OT on 2012-02-27.86169 UT with 19.8 unfiltered magnitude limit in MASTER-Tunka database.

There is SDSS J131848.80+672028.6 galaxy with g_mag=19.56 r_mag=19.11, so this OT is posible SuperNova in it.

The discovery and reference image are available here http://master.sai.msu.ru/static/OT/MASTERJ131847.92672030.3.png

Spectral observations are required.

List of Optical Transients discovered by MASTER

Global MASTER Robotic Net