TITLE: GCN CIRCULAR NUMBER: 7425 SUBJECT: Swift Trigger 306745 is not a GRB DATE: 08/03/19 02:05:19 GMT FROM: David Palmer at LANL S. D. Barthelmy (GSFC), S. T. Holland (CRESST/USRA/GSFC), J. A. Kennea (PSU), C. Pagani (PSU), D. M. Palmer (LANL), A. M. Parsons (GSFC), J. L. Racusin (PSU), M. Stamatikos (NASA/ORAU) and E. Troja (U Leicester/INAF-IASFPA) report on behalf of the Swift Team: Shortly before 2008-03-18 01:50 UT, Swift lost star tracker lock. This caused the Burst Alert Telescope (BAT) to detect Sco X-1 at the wrong location, leading to trigger 306745. This is not a GRB. Star tracker recovery operations are in progress.