{
  "bibcode": "2017GCN.20732....1L",
  "body": "V.M.  Lipunov, V.Shumkov, E. Gorbovskoy, N.Tyurina, P.Balanutsa, V.G. O.Gress, \nKornilov, A.Kuznetsov, M.I.Panchenko, A.V.Krylov, I.Gorbunov\nLomonosov Moscow State University, Sternberg Astronomical Institute\n\nN.M. Budnev, O. Gress, K. Ivanov, S.Yazev\nIrkutsk State University\n\nR.Podesta, C.Lopez, F. Podesta\nObservatorio Astronomico Felix Aguilar (OAFA) , National University of San\nJuan, Argentina\n\nH. Levato, C. Saffe\nInstituto de Ciencias Astronomicas,de la Tierra y del Espacio (ICATE),\nSan Juan, Argentina\n\nD.Buckley, S. Potter, M. Kotze,\n  South African Astronomical Observatory\n\nR. Rebolo, M. Serra-Ricart, G. Israelian, N.Lodiu\nThe Instituto de Astrofisica de Canarias\n\nA. Tlatov, V.Sennik\nKislovodsk Solar Station of the Pulkovo Observatory\n\nV.Yurkov, Yu.Sergienko, A.Gabovich\nBlagoveschensk Educational State University, Blagoveschensk\n\nMASTER continues inspection of LIGO event G274296 (Shawhan et al. GCN \n20689, Lipunov et al. GCN 20696, GCN 20715; 20712; ). The cover map of \nMASTER inspection survey, \nthe \nposition of MASTER OTs inside LIGO error-box is presented at \nhttp://master.sai.msu.ru/static/MASTERGW170217full.jpg\n\n  MASTER OT J184722.28-834543.4 discovery - new optical transients, no \nknown sources in VIZIER database.\n\n\nMASTER-OAFA auto-detection system discovered OT source at (RA, Dec) = 18h \n47m 22.28s -83d 45m 43.4s on 2017-02-24.13990 UT with unfiltered \nm_OT=17.6m (mlimit=19.4m).\n\nThe OT is seen in 2 images. There is no minor planet at this place.\n\nWe have reference images without OT on 2017-01-26.20851 UT with 19.7m \nunfiltered magnitude limit in MASTER-OAFA, on 2016-08-05 18:16:52UT with \nmlim=19.5, on 2016-03-02 23:53:05 with mlim=20.0, 2015-04-26 23:34:52 with \nmlim=20.0, on2015-01-12 01:41:57UT with mlim=19.6 in MASTER-SAAO database.\n\nThere is no any known sources inside 8\" in VIZIER database, it means 22mag \nof POSS historical limits and more then 4.4magnitude of current outburst \namplitude.\n\nSpectral observations are required.\n\nThe discovery and reference images are available at: \nhttp://master.sai.msu.ru/static/OT/184722.28-834543.4.png",
  "circularId": 20732,
  "createdOn": 1487942491000,
  "email": "lipunov2007@gmail.com",
  "subject": "LIGO/Virgo G274296: MASTER new OT",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov2007@gmail.com>",
  "eventId": "LIGO/Virgo G274296"
}