{
  "bibcode": "2021GCN.29240....1P",
  "body": "A. Pozanenko (IKI), S. Belkin (IKI), V. Kim (FAI, Pulkovo Observatory), \n  M. Krugov (FAI)  report on behalf of GRB IKI FuN:\n\nWe observed MAXI GRB 210102B (Guo et al., GCN 29223) with AZT-20 \ntelescope of Assy-Turgen observatory starting on  Jan. 03 (UT) 13:00:53. \ni.e.  ~1.6 days after trigger.  At the place of the only one of XRT \ncandidates (Burrows  et al., GCN 29230) in the localization area of MAXI \n(Guo et al., GCN 29223) we clearly detect the optical object in \ncoordinates (J2000) 23:35:15.88 -21:04:55.5 with uncertainness of 0.6 \narcsec in both coordinates.\nPreliminary photometry of the object  is following\n\nDate       UT start  t-T0    Filter  Exp.    OT   Err.  UL (3sigma)\n                      (mid, days)      (s)\n\n2021-01-03 13:00:53  1.19068  r'(AB)  75*60  22.2 0.2   23.0\n\nThe photometry is based on the stars of PanSTARRS-PS1\nRA DEC r'\n23:35:20.67802 -21:04:16.4688 19.656\n23:35:47.99017 -21:11:53.6544 17.807\n\nAt this tome we cannot confirm variability of the source. We can suggest \nthe object might  be related to GRB 210102B.",
  "circularId": 29240,
  "createdOn": 1609783598000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB 210102B: Assy optical observations",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 210102B"
}