{
  "bibcode": "2015GCN.17594....1E",
  "body": "P.A. Evans and M.R. Goad (U. Leicester) report on behalf of the\nSwift-XRT team:\n\nUsing 2091 s of XRT Photon Counting mode data and 2 UVOT images, 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 = 138.98467, 55.46618 which is equivalent to:\n\nRA  (J2000):  09h 15m 56.32s\nDec (J2000): +55d 27' 58.2\"\n\nwith an uncertainty of 2.2 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": 17594,
  "createdOn": 1426579417000,
  "email": "pae9@leicester.ac.uk",
  "subject": "GRB 150317A: Enhanced Swift-XRT position",
  "submitter": "Phil Evans at U of Leicester  <pae9@leicester.ac.uk>",
  "eventId": "GRB 150317A"
}