{
  "bibcode": "2012GCN.13837....1E",
  "body": "P.A. Evans (U. Leicester) reports on behalf of the Swift-XRT team:\n\nUsing 2340 s of XRT Photon Counting mode data and 3 UVOT images of GRB \n121001A (D'Elia et al., GCN Circ. 13831), we find an astrometrically \ncorrected X-ray position (using the XRT-UVOT alignment and matching UVOT \nfield sources to the USNO-B1 catalogue): RA, Dec = 276.03227, -5.66587 \nwhich is equivalent to:\n\nRA (J2000):  18 24 07.74\nDec (J2000): -05 39 57.1\n\nwith an uncertainty of 1.8 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": 13837,
  "createdOn": 1349161944000,
  "email": "pae9@leicester.ac.uk",
  "subject": "GRB 121001A: Enhanced Swift-XRT Position",
  "submitter": "Phil Evans at U of Leicester  <pae9@leicester.ac.uk>",
  "eventId": "GRB 121001A"
}