TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1592 SUBJECT: GRB021004, astrometric position DATE: 02/10/06 19:27:16 GMT FROM: Arne A. Henden at USNO/USRA A. Henden (USRA/USNO) and S. Levine (USNO) report on behalf of the USNO GRB team: We have measured the two high signal/noise Ic images acquired on the Strand 1.55m astrometric telescope at NOFS on 021005 UT. Using 23 UCAC2 stars on each frame, we derive the following accurate position for the optical afterglow of GRB021004: 00:26:54.674 +18:55:41.59 J2000 with approximately 50mas external error in each coordinate. This is in good agreement with the coordinates given by Fox, et al. (GCN 1564).