TITLE: GCN CIRCULAR NUMBER: 21445 SUBJECT: LIGO/Virgo G296853: MASTER SN detection near center error-area DATE: 17/08/10 16:40:38 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs V.M. Lipunov, E. Gorbovskoy, V.G.Kornilov, N.Tyurina, V.Shumkov, D.Kuvshinov, P.Balanutsa, O.Gress, A.Kuznetsov, M.I.Panchenko, A.V.Krylov, I.Gorbunov Lomonosov Moscow State University, Sternberg Astronomical Institute R.Podesta, C.Lopez, F. Podesta Observatorio Astronomico Felix Aguilar (OAFA) , National University of San Juan, Argentina H. Levato, C. Saffe Instituto de Ciencias Astronomicas,de la Tierra y del Espacio (ICATE), San Juan, Argentina N.M. Budnev, O. Gress, K. Ivanov, S.Yazev Irkutsk State University V.Yurkov, Yu.Sergienko, A.Gabovich Blagoveschensk Educational State University, Blagoveschensk D.Buckley, S. Potter, M. Kotze, South African Astronomical Observatory R. Rebolo, M. Serra-Ricart, G. Israelian, N.Lodiu The Instituto de Astrofisica de Canarias A. Tlatov, V.Sennik Kislovodsk Solar Station of the Pulkovo Observatory MASTER OT J013646.48-140323.5 discovery - PSN in 6.3"E,13.1"S of barred spiral PGC005976 During LIGO G296853 area inspection MASTER-SAAO(see Lipunov et al., GCN 21435) auto-detection system (Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L ) discovered possible SuperNova explosion in PGC005976 galaxy at position (RA, Dec) = 01h 36m 46.48s -14d 03m 23.5s on 2017-08-09.91543 UT (Gress et al., Atel #10631). The OT (PSN) unfiltered magnitude is 17.1m (mlim=18.8). This OT is seen in 4 inspection images. There is no minor planet at this place. We have reference image on 2016-08-27.02894 UT with unfiltered mlim= 20.3m. This PSN is located in spiral in 6.3"E,13.1"S of barred PGC005976 with Btc=14.82, Vgsr=12113km/s Corresponding distance is ~ 170 Mpc. Spectral observations are required. The discovery and reference images are available at: http://master.sai.msu.ru/static/OT/013646.48-140323.5.png This message can be citted.