{
  "bibcode": "2021GCN.29780....1J",
  "body": "M. Jelinek, J. Strobl, R. Hudec, C. Polasek (ASU CAS Ondrejov)\nreport:\n\nWe observed the position of the Fermi/GBM GRB 210410A (Fermi, GCNC 29777)\nwith the D50 robotic telescope of the Astronomical Institute Ondrejov, near\nPrague, Czech Republic.  We performed a series of 120 s unfiltered\nexposures starting 56 min after the trigger.\n\nWithin the Swift/XRT error box (Melandri et al. GCNC 29778) we detect a\nfading object at (269.7542, 45.3629) (17:59:01.00 +45:21:46.6 J2000\n+/-0.3\").  The preliminary magnitude 103 min after the trigger was r'(AB) =\n21.5 +/- 0.2 and the object seems to fade with alpha ~ 0.95 +/- 0.27.",
  "circularId": 29780,
  "createdOn": 1618025789000,
  "email": "martin.jelinek@asu.cas.cz",
  "subject": "GRB210410A: Candidate optical afterglow by Ondrejov D50",
  "submitter": "Martin Jelinek at Astro.Inst-AVCR,Ondrejov  <martin.jelinek@asu.cas.cz>",
  "eventId": "GRB 210410A"
}