GCN Circular 19307
S. D. Barthelmy (GSFC), V. D'Elia (ASDC), N. Gehrels (NASA/GSFC), H. A. Krimm (CRESST/GSFC/USRA), A. Y. Lien (GSFC/UMBC) and B. Sbarufatti (INAF-OAB/PSU) report on behalf of the Swift Team: At 20:39:22 UT, the Swift Burst Alert Telescope (BAT) triggered on noise while entering the SAA (trigger=682614). Swift did not slew because of Sun constraint. The BAT on-board calculated location is RA, Dec 58.958, -8.346, which is RA(J2000) = 03h 55m 50s Dec(J2000) = -08d 20' 44" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve shows a rapidly increasing background due to entering the SAA. This trigger is not astrophysical. Due to a Sun observing constraint, Swift cannot slew to the BAT position until 04:53 UT on 2016 June 25. There will thus be no XRT or UVOT data for this trigger before this time.