TITLE: GCN CIRCULAR NUMBER: 11699 SUBJECT: GRB 110212A: Swift detection of a burst DATE: 11/02/12 01:18:44 GMT FROM: David Palmer at LANL V. D'Elia (ASDC), W. H. Baumgartner (GSFC/UMBC), A. P. Beardmore (U Leicester), N. Gehrels (NASA/GSFC), J. M. Gelbord (PSU), S. T. Holland (CRESST/USRA/GSFC), J. A. Kennea (PSU), H. A. Krimm (CRESST/GSFC/USRA), N. P. M. Kuin (UCL-MSSL), C. B. Markwardt (NASA/GSFC), D. M. Palmer (LANL), M. H. Siegel (PSU) and G. Stratta (ASDC) report on behalf of the Swift Team: At 01:09:08 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 110212A (trigger=445321). Swift did not slew immediately to the burst because of an observing constraint. The BAT on-board calculated location is RA, Dec 69.053, +43.702 which is RA(J2000) = 04h 36m 13s Dec(J2000) = +43d 42' 09" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a multiply-peaked structure with a duration of about 10 sec. The peak count rate was ~3000 counts/sec (15-350 keV), at ~0 sec after the trigger. Due to a Moon observing constraint, Swift cannot slew to the BAT position until 19:02 UT on 2011 February 13. There will thus be no XRT or UVOT data for this trigger before this time. Burst Advocate for this burst is V. D'Elia (delia AT asdc.asi.it). Please contact the BA by email if you require additional information regarding Swift followup of this burst. In extremely urgent cases, after trying the Burst Advocate, you can contact the Swift PI by phone (see Swift TOO web site for information: http://www.swift.psu.edu/too.html.)