{
  "bibcode": "2019GCN.23616....1L",
  "body": "V. Lipunov, A.Kuznetsov, E. Gorbovskoy, V.Kornilov, D.Kuvshinov, \nN.Tyurina,  P.Balanutsa,D. Vlasenko\nLomonosov Moscow State University,\nSternberg Astronomical Institute, Moscow State University\n\n\nV. Yurkov, A. Gabovich, Yu. Sergienko, D. Kobcev\nBlagoveschensk Educational State University, Blagoveschensk\n\nA. Tlatov, V.Senik, A.V. Parhomenko, D. Dormidontov\nKislovodsk Solar Station of the Pulkovo Observatory\n\nK. Ivanov, O. Gres, N.M. Budnev, S. Yazev, O. Chuvalaev, V. Poleshchuk\nIrkutsk State University\n\nR. Podesta, Carlos Lopez and F. Podesta\nObservatorio Astronomico Felix Aguilar (OAFA)\n\nHugo Levato and Carlos Saffe\nInstituto de Ciencias Astronomicas, de la Tierra y del Espacio (ICATE)\n\nR. Rebolo, M. Serra, N. Lodieu, G. Israelian, L. Suarez-Andres\nThe Instituto de Astrofisica de Canarias\n\nD. Buckley, S. Potter, A. Kniazev, M. Kotze\nSouth African Astronomical Observatory\n\nMASTER-Amur robotic telescope (Global MASTER-Net: \nhttp://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, \nvol. 2010, 30L) located in Russia (Blagoveshchensk State Pedagogical \nUniversity) was pointed to the  GRB190106.57 (Swift BAT alert, GCN 23615) \n20 sec after notice time and \n36 sec after trigger time at 2019-01-06 13:35:20 UT. On our first (10s \nexposure)  set we found optical transient  within SWIFT BAT error-box \n(ra=29.8792 dec=23.8567 r=0.05).\nThe 5-sigma upper limit has been about 16.5mag\n\nRA, DEC = 01h 59m 31.20s +23d 50m 44.04s\nmag = 16.0\nThe automatical photometry are:\n\nstart time\t     coord2000\t\t  Band\t mag\temag  exp\n\n13:35:20.0   1h 59m 31.17s +23d 50m 44.5s   P   16.2    0.20   10\n13:35:46.6   1h 59m 31.19s +23d 50m 44.8s   P\t15.2\t0.14   10\n13:36:12.6   1h 59m 31.23s +23d 50m 44.1s   P\t15.8\t0.15   20\n13:36:47.8   1h 59m 31.19s +23d 50m 44.6s   P\t16.2\t0.17   20\n13:37:24.9   1h 59m 31.23s +23d 50m 44.5s   P\t15.8\t0.11   30\n13:38:08.7   1h 59m 31.18s +23d 50m 44.2s   P\t15.4\t0.08   40 \n13:39:03.1   1h 59m 31.17s +23d 50m 44.2s   P\t15.7\t0.07   50\n13:40:07.0   1h 59m 31.18s +23d 50m 44.1s   P\t15.5\t0.09   60\n13:41:35.5   1h 59m 31.20s +23d 50m 44.0s   P\t15.6\t0.10   60\n13:43:03.7   1h 59m 31.18s +23d 50m 44.3s   P\t15.9\t0.11   60\n13:44:28.9   1h 59m 31.18s +23d 50m 43.8s   P\t16.1\t0.12   60\n...............................\nto be continuated...\n\n\nThis optical counterpart is coincident with Swift optical object (Sonbas \net al., GCN 23615).\n\nThe galactic latitude b = -36 deg., longitude l = 143 deg.\nThe observations made on zenit distance = 45 deg.The moon ( 0 % bright \npart) below the horizon (The altitude of the Moon is -50 deg. ).\nThe sun  altitude  is -53.7 deg.\nThe object can be observed till 2019-01-07 18:34:53\n\nThis message may be cited, but this is the first automatic photometry.\nNon monotonic light curve was detected.",
  "circularId": 23616,
  "createdOn": 1546784415000,
  "email": "lipunov@xray.sai.msu.ru",
  "subject": "GRB 190106A: MASTER Amur OT detection",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov@xray.sai.msu.ru>",
  "eventId": "GRB 190106A"
}