{
  "bibcode": "2020GCN.27917....1L",
  "body": "V. Lipunov, E. Gorbovskoy, V.Kornilov, D.Kuvshinov, N.Tyurina, P.Balanutsa,\nA.Kuznetsov, A.V. Krylov, I. Gorbunov, D. Vlasenko, F. Balakin\nLomonosov Moscow State University,\nSternberg Astronomical Institute, Moscow State University\n\nR. Podesta, Carlos Lopez and F. Podesta\nObservatorio Astronomico Felix Aguilar (OAFA)\n\nHugo Levato\nInstituto de Ciencias Astronomicas, de la Tierra y del Espacio (ICATE)\n\nA. Tlatov, V.Senik, A.V. Parhomenko, D. Dormidontov\nKislovodsk Solar Station of the Pulkovo Observatory\n\nV. Yurkov, A. Gabovich, Yu. Sergienko\nBlagoveschensk Educational State University, Blagoveschensk\n\nK. Ivanov, O. Gres, N.M. Budnev, S.Yazev, O. Chuvalaev, V. Poleshchuk\nIrkutsk State University\n\nD. Buckley, S. Potter, A. Kniazev, M. Kotze\nSouth African Astronomical Observatory\n\nR. Rebolo, M. Serra, N. Lodieu, G. Israelian, L. Suarez-Andres\nThe Instituto de Astrofisica de Canarias\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) was pointed to the  GRB200612.19 19 sec after notice time and 495 sec after trigger time at 2020-06-12 04:47:52 UT. On our 4-th (180s exposure)  set , obtained 960 sec after tigger time at 2020-06-12 04:55:38 UT, we  found 1 optical transient within Swift error-box (ra=302.679 dec=-45.3569 r=0.05) brighter than  18.2.\n\n\n T-Tmid      Date      Time       Expt.        Ra                Dec           Mag\n---------|---------------------|-------|-----------------|-----------------|-------\n    1050   2020-06-12 04:55:38     180   (20h 10m 48.64s , -45d 20m 06.7s)     17.9\n\nThe 5-sigma upper limit has been about  18.2mag\nThe message may be cited.",
  "circularId": 27917,
  "createdOn": 1591939063000,
  "email": "lipunov@xray.sai.msu.ru",
  "subject": "Swift GRB200612.19: Global MASTER-Net OT detection",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov@xray.sai.msu.ru>",
  "eventId": "GRB 200612.19"
}