TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1417 SUBJECT: IPN triangulation of GRB020604 DATE: 02/06/07 18:55:53 GMT FROM: Kevin Hurley at UCBerkeley/SSL K. Hurley and T. Cline, on behalf of the Ulysses, Mars Odyssey, and Konus GRB teams, I. Mitrofanov, D. Anfimov, A. Kozyrev, M. Litvak and A. Sanin on behalf of the HEND/Odyssey GRB team, E. Mazets and S. Golenetskii, on behalf of the Konus-Wind GRB team, D. M. Smith, R. P. Lin, J. McTiernan, R. Schwartz, C. Wigger, W. Hajdas, and A. Zehnder, on behalf of the RHESSI 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, RHESSI, and HEND observed this burst at ~51223 s. As observed by Ulysses, it had a duration ~10 s, a 25-100 keV fluence of ~3E-6 erg/cm^2, and a peak flux over 0.5 s of ~5E-7 erg/cm^2 s. We have triangulated it to a preliminary, 3 sigma error box whose area is ~160 square arcminutes and whose coordinates are: RA(2000) DEC(2000) 16 h 27 m 32.31 s -29 o 48 ' 21.41 " (CENTER) 16 h 25 m 56.99 s -29 o 59 ' 26.08 " (CORNER) 16 h 27 m 59.70 s -29 o 41 ' 20.90 " (CORNER) 16 h 27 m 05.07 s -29 o 55 ' 20.70 " (CORNER) 16 h 29 m 08.79 s -29 o 37 ' 05.87 " (CORNER) Some improvement in this error box is possible. A map will be posted shortly to sunspot.ssl.berkeley.edu/ipn3/020604. This server will be down from about 7 AM to 5 PM PDT Saturday, June 8.