TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2223 SUBJECT: IPN triangulation of GRB030509 (small errror box) DATE: 03/05/09 23:35:14 GMT FROM: Kevin Hurley at UCBerkeley/SSL K. Hurley and T. Cline, on behalf of the Ulysses, Konus, and Mars Odyssey GRB teams, 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, E. Mazets and S. Golenetskii, on behalf of the Konus-Wind GRB team, and A. von Kienlin, G. Lichti, and A. Rau, on behalf of the INTEGRAL SPI-ACS GRB team, report: Mars Odyssey (GRS) also observed this burst (GCN 2221, 2222). We have triangulated it to a preliminary, 3 sigma error box with approximate area 124 square arcminutes whose coordinates are: RA(2000) DEC(2000) ERROR BOX CENTER: 5 h 14 m 49.82 s 11 o 8 ' 16.84 " (CENTER) ERROR BOX CORNER 1: 5 h 14 m 18.14 s 11 o 17 ' 52.48 " (CORNER) ERROR BOX CORNER 2: 5 h 16 m 46.58 s 10 o 25 ' 53.82 " (CORNER) ERROR BOX CORNER 3: 5 h 12 m 55.74 s 11 o 49 ' 57.16 " (CORNER) ERROR BOX CORNER 4: 5 h 15 m 21.64 s 10 o 58 ' 38.79 " (CORNER) This error box may be improved.