{
  "bibcode": "2006GCN..5953....1B",
  "body": "N. Butler (U.C. Berkeley) reports:\n\nWe centroid on a faint and fading source 20\" away from the initial refined\nXRT team position (GCN5932).  Using 6 optical/X-ray matches, we find an\nastrometry corrected position (v2.9) relative to 2MASS of:\n\n  RA, Dec:  10 41 39.32  -21 07 22.1 ;  +/-3.8\" (90% Conf.)     (J2000.0)\n\nThe candidate from GCN5948 is 14\" from our position, however this is likely\na star (GCN5949).  Our position is 5.7\" away from Source G1 in GCN5949 and\n11.4\" away from Source G2 in GCN5949.  Our position therefore favors\nassociating source G1 with the short GRB host galaxy.\n\nOur position has remained stable for several days as new XRT data\nreach our computers (http://astro.berkeley.edu/~nat/swift/xrt_pos.html).\nThe reductions, which take into account bad detector columns, are described in\nButler (2006; AJ accepted; astro-ph/0611031).  The disagreement of our\nposition with the original XRT team refined position lead to a retraction\nof that position.  The new XRT team position (GCN5947) is consistent with\nours.\n\nThanks to J. Bloom and A. Kann for helping to discover the discrepancy\nwith the XRT Team position.",
  "circularId": 5953,
  "createdOn": 1166741435000,
  "email": "nrbutler@space.mit.edu",
  "subject": "GRB 061217: Astrometry-Corrected XRT Position",
  "submitter": "Nat Butler at MIT/CSR  <nrbutler@space.mit.edu>",
  "eventId": "GRB 061217"
}