TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2437 SUBJECT: IPN triangulation of GRB031026B (large error box) DATE: 03/10/30 19:07:52 GMT FROM: Kevin Hurley at UCBerkeley/SSL K. Hurley and T. Cline, on behalf of the Ulysses, Mars Odyssey, and KONUS GRB teams, E. Mazets and S. Golenetskii, on behalf of the Konus-Wind GRB team, I. Mitrofanov, S. Charyshnikov, V. Grinkov, 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 A. von Kienlin, G. Lichti, and A. Rau, on behalf of the INTEGRAL SPI-ACS GRB team, report: Konus-Wind, Mars Odyssey-HEND, and INTEGRAL - SPI-ACS observed this short (~0.2 s) hard-spectrum burst at 05188 s. We have triangulated it to a preliminary, 3 sigma error box whose area is ~4500 sq. arcmin., and whose coordinates are: RA(2000) DEC(2000) 22 h 24 m 0.34 s +0 o 06 ' 51.46 " (CENTER) 22 h 15 m 08.45 s -0 o 12 ' 35.60 " (CORNER) 22 h 32 m 55.73 s +0 o 19 ' 27.81 " (CORNER) 22 h 15 m 17.06 s -0 o 29 ' 17.67 " (CORNER) 22 h 33 m 04.41 s +0 o 02 ' 42.53 " (CORNER) This error box may be improved, but as this burst was not observed by Ulysses, a small error box cannot be derived for it.