TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1682 SUBJECT: GRB021112 (=H2448): A Long GRB Localized by HETE DATE: 02/11/12 15:54:15 GMT FROM: George Ricker at MIT GRB021112 (=H2448): A Long GRB Localized by HETE E. Fenimore, Y. Shirasaki, C. Graziani, M. Matsuoka, T. Tamagawa, K. Torii, T. Sakamoto, A. Yoshida, M. Galassi, T. Tavenner, T. Donaghy, Y. Nakagawa, D. Takahashi, M. Suzuki, R. Satoh, and Y. Urata, on behalf of the HETE WXM Team; G. Ricker, J-L Atteia, N. Kawai, D. Lamb, and S. Woosley on behalf of the HETE Science Team; N. Butler, G. Crew, J. Doty, G. Prigozhin, R. Vanderspek, J. Villasenor, T. Cline, J. G. Jernigan, A. Levine, F. Martel, E. Morgan, G. Azzibrouck, J. Braga, R. Manchanda, and G. Pizzichini, on behalf of the HETE Operations and HETE Optical-SXC Teams; M. Boer, J-F Olive, J-P Dezalay, C. Barraud and K. Hurley on behalf of the HETE FREGATE Team; write: At 03:28:15.89 UTC (12495.89 s UT) on 12 Nov 2002, the HETE FREGATE and WXM instruments detected event H2448, a long GRB. Ground analysis of the WXM data for the burst produced a location which was reported in a GCN Position Notice at 04:49 UT, 81 minutes after the burst. Further ground analysis of the WXM data produced a refined location, which was reported in a second GCN Position Notice at 05:29 UT. At the time that the second GCN Position Notice was issued, we noted that a transcription error had resulted in an error of 1 degree in the value of the declination cited in the 04:49 UT Notice. The WXM localization SNR was 4. The refined WXM ground location can be expressed as a 90% confidence circle that is 20 arcminutes in radius and is centered at RA = +02h 36m 52s, Dec = +48d 50' 56" (J2000). The burst duration in the 8-40 keV band > 5s. In the 8-40 keV band, the burst duration was > 3s, and the peak flux was > 3 x 10-8 ergs cm-2 s-1 (ie > 1 x Crab flux). In the 25-400 keV band, the burst duration was > 4s. A light curve for GRB021112 is provided at the following URL: http://space.mit.edu/HETE/Bursts/GRB021112/ This message is citable.