TITLE: GCN CIRCULAR NUMBER: 14402 SUBJECT: Swift Trigger 553930 is not an astrophysical source DATE: 13/04/19 22:48:50 GMT FROM: Hans Krimm at NASA-GSFC H. A. Krimm (CRESST/GSFC/USRA) for the Swift Team In reviewing the Swift/BAT event data for Trigger 553930 (Baumgartner et al, GCN 14396) we see no signs of significant activity from the RS CVn flare star HR 5110. Therefore we conclude that Trigger 553930 was a noise event in chance coincidence with a catalog source and is not due to an astrophysical event.