{
  "subject": "GRB 251017A: Enhanced Swift-XRT position",
  "submitter": "Phil Evans at U of Leicester <pae9@star.le.ac.uk>",
  "createdOn": 1760705696777,
  "bibcode": "2025GCN.42326....1G",
  "circularId": 42326,
  "eventId": "GRB 251017A",
  "submittedHow": "email",
  "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 1230 s of XRT Photon Counting mode data and 2 UVOT\nimages for GRB 251017A, 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 = 335.40133, +7.04008 which is equivalent\nto:\n\nRA (J2000): 22h 21m 36.32s\nDec (J2000): +07d 02' 24.3\"\n\nwith an uncertainty of 2.1 arcsec (radius, 90% confidence).\n\nThis position may be improved as more data are received. The latest\nposition can be viewed at https://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 was automatically generated, and is an official product of the\nSwift-XRT team.\n"
}