TITLE: GCN CIRCULAR NUMBER: 11691 SUBJECT: GRB 110210A: Swift-BAT refined analysis DATE: 11/02/10 18:30:41 GMT FROM: Scott Barthelmy at NASA/GSFC M. Stamatikos (OSU), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), J. R. Cummings (GSFC/UMBC), V. D'Elia (ASDC), N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA), C. B. Markwardt (GSFC), D. M. Palmer (LANL), T. Sakamoto (GSFC/UMBC), J. Tueller (GSFC), T. N. Ukwatta (GWU) (i.e. the Swift-BAT team): Using the data set from T-239 to T+963 sec from recent telemetry downlinks, we report further analysis of BAT GRB 110210A (trigger #445141) (D'Elia, et al., GCN Circ. 11687). The BAT ground-calculated position is RA, Dec = 13.108, 7.778 deg, which is RA(J2000) = 00h 52m 25.9s Dec(J2000) = +07d 46' 39.5" with an uncertainty of 3.2 arcmin, (radius, sys+stat, 90% containment). The partial coding was 83%. The mask-weighted light curve shows the emission starting at ~T-100 sec, peaking at ~T+50 sec, and ending at ~T+150 sec. T90 (15-350 keV) is 233 +- 60 sec (estimated error including systematics). The time-averaged spectrum from T-102.9 to T+153.6 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.73 +- 0.29. The fluence in the 15-150 keV band is 9.6 +- 1.9 x 10^-7 erg/cm2. The 1-sec peak photon flux measured from T-54.44 sec in the 15-150 keV band is 0.3 +- 0.1 ph/cm2/sec. All the quoted errors are at the 90% confidence level. The results of the batgrbproduct analysis are available at http://gcn.gsfc.nasa.gov/notices_s/445141/BA/