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GCN Circular 20759

Subject
LIGO/Virgo G275404: MASTER PSN detection from the maximal probability LIGO region
Date
2017-02-27T09:25:22Z (7 years ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov2007@gmail.com>
V.M.  Lipunov, E. Gorbovskoy, P.Balanutsa,  E. Gorbovskoy, 
N.Tyurina, 
V.Shumkov,  O.Gress, V.G. Kornilov, A.Kuznetsov, M.I.Panchenko, 
A.V.Krylov, I.Gorbunov, T.Pogrosheva
Lomonosov Moscow State University, Sternberg Astronomical Institute

R. Rebolo, M. Serra-Ricart, G. Israelian, N.Lodiu
The Instituto de Astrofisica de Canarias

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

A. Tlatov, V.Sennik
Kislovodsk Solar Station of the Pulkovo Observatory

MASTER-IAC auto-detection system ( Lipunov et al., "MASTER Global Robotic 
Net", Advances in Astronomy, 2010, 30L ) discovered OT source at (RA, Dec) 
= 19h 50m 04.70s +52d 38m 56.2s on 2017-02-26.26975 UT during inspection 
of G275404.

The OT unfiltered magnitude is ~ 19.0m (m_limit=19.5m).

This PSN is in 2.4W,2.6N of disc galaxy PGC2420186 
(http://leda.univ-lyon1.fr/ledacat.cgi?PGC2420186 )

This PSN is seen in 3 images. There is no minor planet at this place.

We have reference image without OT on 2016-05-07.15047 UT with unfiltered 
magnitude limit 20.1m.

Spectral observations are required.

The discovery and reference images are available at:

http://master.sai.msu.ru/static/OT/195004.84523853.6.png

Spectral 
observations are required.
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