{
  "bibcode": "2017GCN.20619....1E",
  "body": "P.A. Evans (U. Leicester) reports on behalf of the Swift-XRT team:\n\nUsing 1338 s of XRT Photon Counting mode data and 1 UVOT  image, we find \nan astrometrically corrected X-ray position (using the XRT-UVOT \nalignment and matching UVOT field sources to the USNO-B1 catalogue): RA, \nDec = 271.77061, 11.19366 which is equivalent to:\n\nRA (J2000):  18 07 04.95\nDec (J2000): +11 11 37.2\n\nwith an uncertainty of 1.9 arcsec (radius, 90% confidence).\n\nThis position may be improved as more data are received.  The latest \nposition can be viewed at http://www.swift.ac.uk/xrt_positions. Position\nenhancement is described by Goad et al. (2007, A&A, 476, 1401) and Evans\net al. (2009, MNRAS, 397, 1177).\n\nThis circular is an official product of the Swift-XRT team.",
  "circularId": 20619,
  "createdOn": 1486456507000,
  "email": "pae9@leicester.ac.uk",
  "subject": "GRB 170206B: Enhanced Swift-XRT position",
  "submitter": "Phil Evans at U of Leicester  <pae9@leicester.ac.uk>",
  "eventId": "GRB 170206B"
}