TITLE: GCN GRB OBSERVATION REPORT NUMBER: 4781 SUBJECT: GRB060218: Swift/XRT refined position of a possible burst DATE: 06/02/18 23:18:46 GMT FROM: Giancarlo Cusumano at INAF-IASFA G. Cusumano (IASF-Pa INAF), A. Moretti (INAF-OAB), G. Tagliaferri (INAF-OAB), J. Kennea (PSU) and D. Burrows (PSU), report on behalf of the Swift/XRT Team: We have performed a preliminary analysis of Swift/XRT ground-linked data associated to the possible burst GRB060218 (trigger=191157; Cusumano et al., GCN 4775, Kennea et al. 4776). We confirm the presence of a bright X-ray source at the following location: RA(J2000): 3h 21m 39.9s Dec(J2000): 16d 52m 03.7s with an estimated uncertainty of 7 arcseconds (90% containment). Note that this position lies 3.7" from the previous XRT position (GCN 4775), 3' from the BAT position reported in GCN 4780 and 2.9" from the UVOT position. A full analysis of the XRT data will follow. This circular is an official product of the Swift XRT Team.