TITLE: GCN CIRCULAR NUMBER: 35867 SUBJECT: Swift Trigger 1218696: Another trigger on Swift J151857.0-572147 DATE: 24/03/05 04:14:46 GMT FROM: Jamie Kennea at Penn State J. A. Kennea (PSU) report on behalf of the Neil Gehrels Swift Observatory Team: At 03:46:30 UT, the Swift Burst Alert Telescope (BAT) triggered and located Swift J151857.0-572147 (trigger=1218696). Swift did not slew to the source due to engineering activities. No XRT or UVOT data will be collected. The BAT on-board calculated location is RA, Dec 229.705, -57.346 which is RA(J2000) = 15h 18m 49s Dec(J2000) = -57d 20' 45" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a [**double-peaked**] structure with a duration of about TTT sec. The peak count rate was ~1070 counts/sec (15-350 keV), at ~-1 sec after the trigger.