{
  "bibcode": "2020GCN.29113....1E",
  "body": "P.A. Evans (U. Leicester) reports on behalf of the Swift-XRT team:\n\nUsing  promptly downlinked XRT event data for GRB 201221D, we find an\nenhanced XRT position of the afterglow: RA, Dec: 171.0587, 42.1438\nwhich is equivalent to:\n   RA (J2000)  = 11 24 14.09\n   Dec (J2000) = +42 08 37.5\nwith an uncertainty of 4.2 arcseconds (radius, 90% confidence).\nAnalysis of the promptly available data is online at\nhttp://www.swift.ac.uk/sper/1014037.\n\nPosition enhancement is is described by Goad et al. (2007, A&A, 476,\n1401) and Evans et al. (2009, MNRAS, 397, 1177).\n\nThis circular is an official product of the Swift-XRT team.",
  "circularId": 29113,
  "createdOn": 1608593562000,
  "email": "pae9@leicester.ac.uk",
  "subject": "GRB 201221D: Prompt enhanced Swift-XRT position",
  "submitter": "Phil Evans at U of Leicester  <pae9@leicester.ac.uk>",
  "eventId": "GRB 201221D"
}