TITLE: GCN CIRCULAR NUMBER: 6724 SUBJECT: GRB 070808, Swift-BAT refined analysis DATE: 07/08/09 03:38:55 GMT FROM: Jay R. Cummings at NASA/GSFC/Swift E. Fenimore (LANL), L. Barbier (GSFC), S. D. Barthelmy (GSFC), J. Cummings (GSFC/UMBC), N. Gehrels (GSFC), H. Krimm (GSFC/USRA), C. Markwardt (GSFC/UMD), D. Palmer (LANL), A. Parsons (GSFC), T. Sakamoto (GSFC/ORAU), G. Sato (GSFC/ISAS), M. Stamatikos (GSFC/ORAU), J. Tueller (GSFC), T. Ukwatta (GWU) Using the data set from T-120 to T+218 sec from the recent telemetry downlink, we report further analysis of BAT GRB 070808 (trigger #287260) (Cummings, et al., GCN Circ. 6718). The BAT ground-calculated position is RA, Dec = 6.761, 1.180 deg which is RA(J2000) = 0h 27m 2.6s Dec(J2000) = 1d 10' 47" with an uncertainty of 1.2 arcmin, (radius, sys+stat, 90% containment). The partial coding was 47%. The burst had a single FRED peak. T90 (15-350 keV) was 32 +- 3 sec (estimated error including systematics). The time-averaged spectrum from T-0.7 to T+41.4 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.47 +- 0.14. The fluence in the 15-150 keV band was 1.2 +- 0.1 x 10^-06 erg/cm2. The 1-sec peak photon flux measured from T+0.73 sec in the 15-150 keV band was 2.0 +- 0.2 ph/cm2/sec. All the quoted errors are at the 90% confidence level.