{
  "bibcode": "2009GCN..9339....1G",
  "body": "M.R. Goad, J.P. Osborne, A.P. Beardmore and P.A. Evans (U. Leicester) \nreport on behalf of the Swift-XRT team.\n\nUsing 1675 s of XRT Photon Counting mode data and 1 UVOT\nimages for GRB 090510, we find an astrometrically corrected X-ray\nposition (using the XRT-UVOT alignment and matching UVOT field sources\nto the USNO-B1 catalogue): RA, Dec = 333.55271, -26.58266 which is equivalent\nto:\n\nRA (J2000): 22h 14m 12.65s\nDec (J2000): -26d 34' 57.6\"\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, arXiv:0812.3662).\n\nThis circular was automatically generated, and is an official product of the\nSwift-XRT team.",
  "circularId": 9339,
  "createdOn": 1241953179000,
  "email": "pae9@star.le.ac.uk",
  "subject": "GRB 090510: Enhanced Swift-XRT position",
  "submitter": "Phil Evans at U of Leicester  <pae9@star.le.ac.uk>",
  "eventId": "GRB 090510"
}