TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1653 SUBJECT: IPN triangulation of GRB021023 (small error boc) DATE: 02/10/24 20:03:05 GMT FROM: Kevin Hurley at UCBerkeley/SSL K. Hurley and T. Cline, on behalf of the Ulysses, Konus, MO, and HETE GRB teams, E. Mazets and S. Golenetskii, on behalf of the Konus-Wind GRB team, I. Mitrofanov, D. Anfimov, A. Kozyrev, M. Litvak and A. Sanin, on behalf of the HEND/Odyssey GRB team, W. Boynton, C. Fellows, K. Harshman, C. Shinohara and R. Starr, on behalf of the GRS/Odyssey GRB team, and G. Ricker, J-L Atteia, N. Kawai, D. Lamb, S. Woosley, J. Doty, R. Vanderspek, J. Villasenor, G. Crew, G. Monnelly, N. Butler, J.G. Jernigan, A. Levine, F. Martel, E. Morgan, G. Prigozhin, J. Braga, R. Manchanda, G. Pizzichini, Y. Shirasaki, C. Graziani, M. Matsuoka, T. Tamagawa, K. Torii, T. Sakamoto, A. Yoshida, E. Fenimore, M. Galassi, T. Tavenner, T. Donaghy, M. Boer, J-F Olive, and J-P Dezalay, on behalf of the HETE GRB team, report: Ulysses, Mars Odyssey-HEND, HETE-FREGATE, and Konus-Wind observed this GRB at 10425 seconds. As observed by Ulysses, it had a duration of approximately 15 seconds, a 25-100 keV fluence of approximately 4.1E-6 erg/cm2, and a peak flux of approximately 6.8E-07 erg/cm2 s over 0.50 seconds. We have triangulated it to a preliminary, 3 sigma error box whose approximate area is 55 sq. arcmin. and whose coordinates are: RA(2000) DEC(2000) ERROR BOX CENTER: 7 h 24 m 55.03 s -16 o 16 ' 51.55 " ERROR BOX CORNER 1: 7 h 24 m 19.40 s -16 o 09 ' 44.82 " ERROR BOX CORNER 2: 7 h 25 m 01.41 s -16 o 21 ' 18.28 " ERROR BOX CORNER 3: 7 h 24 m 48.66 s -16 o 12 ' 24.84 " ERROR BOX CORNER 4: 7 h 25 m 30.74 s -16 o 23 ' 58.17 " This error box may be improved.