{
  "bibcode": "2022GCN.31714....1B",
  "body": "S. Belkin (IKI),  A. Pozanenko (IKI), E. Klunko (ISTP), R. Ya. \nInasaridze (AbAO), N. Pankov (HSE)  report on behalf of GRB IKI FuN:\n\nWe observed  the field of Swift GRB 220306B (Caputo et al. GCN 31697)\nwhich is also detected by GBM/Fermi (Wood  et al., GCN 31702) with \nAZT-33IK telescope of Mondy observatory  in   R-filter starting on\nMar. 07 (UT) 16:42:31. We  detected the  object (Belkin et al., GCN \n31705; Klose et al., GCN 31711) at the S-E edge of the enhanced XRT \nposition (Evans et al. GCN 31700).   Due to non-optimal seeing we cannot \ndiscriminate a possible optical afterglow from the object.  Preliminary \naperture photometry of the object is following\n\nDate       UT start   t-T0    Filter Exp.    OT    Err.  UL(3sigma)\n                        (mid, days)    (s)\n\n2022-03-07 16:42:31   0.94924  R     20*120  21.20 0.22    22.0\n\nThe R magnitude of the object seems still to be brighter than R_mag \ndeduced for the object assuming the object is a star. Taking into \naccount results of  observations (Belkin et al., GCN 31705; this GCN) \nand Tautenburg observations (Klose et al., GCN 31711) we would more \nfirmly suggest the object  is the afterglow of GRB 220306B. The object \nPan-STARRS  objID  193630053894966412  could be a host galaxy of GRB \n220306B.",
  "circularId": 31714,
  "createdOn": 1646776869000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB 220306B: Mondy optical observations, confirmation afterglow candidate",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 220306B"
}