TITLE: GCN CIRCULAR NUMBER: 12630 SUBJECT: GRB 111205A: Swift XRT Observations DATE: 11/12/08 19:40:46 GMT FROM: Erik Hoversten at Swift/Penn State C. A. Wolf (PSU) and E. A. Hoversten (PSU) report on behalf of the Swift team: We have analysed 5.0 ks of XRT data for the IPN-detected burst: GRB 111205A (Hurley et al. GCN Circ. 12626), from 198.4 ks to 210.7 ks after the IPN trigger. The data are entirely in Photon Counting (PC) mode. The XRT field-of- view does not cover the entire IPN error region. However, an uncataloged X-ray source is detected within the observed XRT field which is potentially the afterglow of GRB 111205A. The refined XRT position is RA, Dec = 134.6793, -31.94327 which is equivalent to: RA (J2000): 08 58 43.03 Dec(J2000): -31 56 35.8 with an uncertainty of 4.3 arcsec (radius, 90% confidence). This position is inside the IPN error box. We cannot determine at the present time whether the source is fading. A follow-up Swift observation is planned in several days to confirm fading of the source. The XRT position is outside of the UVOT field of view. However, archival DSS imaging reveals a faint optical source within the XRT error circle. The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00020189.