TITLE: GCN CIRCULAR NUMBER: 5867 SUBJECT: RHESSI Spectrum of GRB061126 DATE: 06/11/27 01:07:48 GMT FROM: Kevin Hurley at UCBerkeley/SSL E. Bellm, M. Bandstra, S. Boggs, C. Wigger, W. Hajdas, D. M. Smith, and K. Hurley on behalf of the RHESSI team report: As observed by RHESSI, GRB061126 (Sbarufatti et al., GCN 5854; Krimm et al., GCN 5860) had a duration of ~25s starting at about T0=8:47:54 UT. A fit to the time-integrated RHESSI spectrum of the main period of emission from T0+6s - T0+13s between 30 keV and 10 MeV gives a cutoff power law, with alpha = -0.95 +0.29/-0.23 E0 = 890. +740/-370. keV Epeak = 935. +/-360. keV (90% confidence levels). The 30 keV-2 MeV fluence is ~2 E-5 erg/cm^2. This fit is preliminary and may be improved with ongoing analysis.