Difference: GCNCIRCULAR20748 ( vs. 1)

V.M. Lipunov, T.Pogrosheva, E. Gorbovskoy, N.Tyurina, V.Shumkov, P.Balanutsa, V.G. O.Gress, Kornilov, A.Kuznetsov, M.I.Panchenko, A.V.Krylov, I.Gorbunov Lomonosov Moscow State University, Sternberg Astronomical Institute

D.Buckley, S. Potter, M. Kotze, South African Astronomical Observatory

N.M. Budnev, O. Gress, K. Ivanov, S.Yazev Irkutsk State University

V.Yurkov, Yu.Sergienko, A.Gabovich Blagoveschensk Educational State University, Blagoveschensk

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

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 J105958.00-115756.5 - possble new CV ?

MASTER-SAAO auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L ) discovered OT source at (RA, Dec) = 10h 59m 58.00s -11d 57m 56.5s on 2017-02-25.96032 UT during LIGO/Virgo G275404 (GCN 20738).

The OT unfiltered magnitude is 17.1m (mlim = 20.0).

The OT is seen in 2 images. There is no minor planet at this place.

We have reference image on 2015-05-17.82159 UT with unfiltered mlim= 20.0m. There is GALEX-DR5 source in half pixel offset.

Spectral observations are required.

-- ThomasKupfer - 27 Feb 2017