TITLE: GCN CIRCULAR NUMBER: 19021 SUBJECT: LIGO/Virgo G184098: MASTER arhival results DATE: 16/02/17 16:13:27 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs V. Lipunov, E. Gorbovskoy, N.Tyurina Lomonosov Moscow State University, Sternberg Astronomical Institute D.Buckley, S. Potter, M. Kotze South African Astronomical Observatory R. Rebolo, M. Serra, N. Lodieu, G. Israelian The Instituto de Astrofisica de Canarias N.M.Budnev, K.Ivanov, O.Gress Irkutsk State University V.Yurkov, Yu.Sergienko, A.Gabovich Blagoveschensk Educational State University, Blagoveschensk A. Tlatov, V.Sennik, A.Parkhomenko Kislovodsk Solar Station of the Pulkovo Observatory We found 30 images in MASTER DataBase included to initial LIGO error box starting 15 september 2015 year 03h 24m 22s UT during MASTER inspection of the Fermi trigger 463976197. So the first optical images obtained by MASTER was started 1.094d before notice time and 0.732 after trigger. This images covered 16 square degrees (summ limit 19.0). We do not find OTs. The covering arhival DataBase map http://master.sai.msu.ru/static/G184098/G184098_arh.png