TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2398 SUBJECT: IPN triangulation of GRB030919 (large error box) DATE: 03/09/24 21:59:40 GMT FROM: Kevin Hurley at UCBerkeley/SSL K. Hurley and T. Cline, on behalf of the Ulysses, Konus, and Mars Odyssey 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, and W. Boynton, C. Fellows, K. Harshman, C. Shinohara and R. Starr, on behalf of the GRS/Odyssey GRB team, report: Ulysses, Konus-Wind, and Mars Odyssey-HEND observed this GRB at 76238 seconds. As observed by Ulysses, it had a duration of approximately 13 seconds, a 25-100 keV fluence of approximately 2.0E-06 erg/cm2, and a peak flux of approximately 5.1E-07 erg/cm2 s over 0.25 seconds. We have triangulated it to a preliminary, 3 sigma error box whose approximate area is 40000 sq. arcmin. and whose coordinates are: RA(2000) DEC(2000) ERROR BOX CENTER: 9 h 28 m 27.18 s -74 o 04 ' 11.61 " ERROR BOX CORNER 1: 9 h 36 m 05.56 s -74 o 09 ' 42.00 " ERROR BOX CORNER 2: 13 h 14 m 12.67 s -72 o 32 ' 38.03 " ERROR BOX CORNER 3: 6 h 56 m 58.26 s -62 o 28 ' 23.43 " ERROR BOX CORNER 4: 9 h 20 m 52.86 s -73 o 57 ' 40.43 " This error box may be improved, but as Mars, Earth, and Ulysses are practically aligned, a small error box cannot be obtained for this event.