{
  "bibcode": "2017GCN.21196....1P",
  "body": "K.L. Page, P.A. Evans and M.R. Goad (U. Leicester) report on behalf of the\nSwift-XRT team:\n\nUsing 4539 s of XRT Photon Counting mode data and 10 UVOT images, we find\nan astrometrically corrected X-ray position (using the XRT-UVOT alignment\nand matching UVOT field sources to the USNO-B1 catalogue): RA, Dec =\n342.65623, -15.41233 which is equivalent to:\n\nRA (J2000):  22 50 37.49\nDec (J2000): -15 24 44.4\n\nwith an uncertainty of 1.4 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": 21196,
  "createdOn": 1496649815000,
  "email": "klp5@leicester.ac.uk",
  "subject": "GRB 170604A: Enhanced Swift-XRT position",
  "submitter": "Kim Page at U.of Leicester  <klp5@leicester.ac.uk>",
  "eventId": "GRB 170604A"
}