{
  "bibcode": "2009GCN..9936....1V",
  "body": "L. Vetere (PSU), P.A. Evans and M.R. Goad (U. Leicester) report\non behalf of the Swift-XRT team:\n\nUsing 3190 s of XRT Photon Counting mode data and 4 UVOT\nimages, we find an astrometrically corrected X-ray position (using the\nXRT-UVOT alignment and matching UVOT field sources to the USNO-B1\ncatalogue): RA, Dec =353.40070, -66.32390 which is equivalent to:\n\nRA (J2000):  23 33 36.18\nDec (J2000): -66 19 25.9\n\nwith an uncertainty of 1.5 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": 9936,
  "createdOn": 1254011188000,
  "email": "vetere@astro.psu.edu",
  "subject": "GRB090926A: UVOT-enhanced XRT position",
  "submitter": "Loredana Vetere at PSU  <vetere@astro.psu.edu>",
  "eventId": "GRB 090926A"
}