{
  "bibcode": "2020GCN.27455....1B",
  "body": "S. Belkin (IKI),  A. Pozanenko (IKI), E. Klunko (ISTP), A. Sosnovskij \n(CrAO), R. Ya. Inasaridze (AbAO), V. Rumyantsev (CrAO), M. Eselevich \n(ISTP), E. Mazaeva (IKI), A. Volnova (IKI) report on behalf of IKI-GRB-FuN:\n\nWe observed the  MASTER OT J111012.51+274912.8  (Lipunov et al., GCN \n27446) as a candidate in afterglow of the Fermi GRB 200325B (Fermi GBM \nteam, GCN 27441) with AZT-33VM 1.5-m telescope of Sayan observatory \n(Mondy) starting on  2020-03-26 (UT) 15:08:10,  ZTSh 2.6m telescope of \nCrAO starting on 2020-03-26 (UT) 20:11:20 (Pozanenko et al., GCN 27452), \nand AS-32 0.7m telescope of Abastumani observatory starting on \n2020-03-26 (UT) 20:27:39. Below we present refined photometry of the OT.\nPreliminary photometry of the object is following.\n\nDate UT start       t-T0  Filter Exp. OT Err UL(3sigma)   telescope\n                         (mid, days) (s)\n2020-03-26 15:08:10 1.0263   R 23*120  19.89 0.05  22.6 AZT-33VM\n2020-03-26 20:11:20 1.2306   R 14*120  20.07 0.08  22.3 ZTSh\n2020-03-26 20:27:39 1.2444   R 35*60    n/d  n/d   20.0 AS-32\n\nthe photometry is based on nearby SDSS-DR12 stars\nRA DEC               R(Lupton transformations)\n167.569191 27.848262 16.015\n167.513655 27.832992 16.930\n167.510507 27.850424 15.261\n\nWe note that coordinates of the OT (Lipunov et al., GCN 27446; Pozanenko \net al., GCN 27452) coincide with only one XRT source \n(https://www.swift.ac.uk/ToO_GRBs/00020978/ ) found in the error \nlocalization of GBM/Fermi. Taking into account the XRT source and fading \nOT we suggest the MASTER OT J111012.51+274912.8  is an afterglow GRB \n200325B.",
  "circularId": 27455,
  "createdOn": 1585314876000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB 200325B: Mondy, CrAO, AbAO afterglow confirmation and refined photometry of MASTER OT J111012.51+274912.8",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 200325B"
}