TITLE: GCN GRB OBSERVATION REPORT NUMBER: 693 SUBJECT: GRB000607, A SHORT, HARD BURST DATE: 00/06/07 21:27:51 GMT FROM: Kevin Hurley at UCBerkeley/SSL K. Hurley, on behalf of the Ulysses GRB team, T. Cline, on behalf of the Konus Wind and NEAR GRB teams, and E. Mazets and S. Golenetskii, on behalf of the Konus Wind GRB team, report: Ulysses, Konus Wind, and NEAR observed this burst at 08689 s UT. As observed by Ulysses, its duration was <150 milliseconds. This duration, as well as its intensity >150 keV, as observed by NEAR, place this burst in the short-duration, hard-spectrum class. This is the first rapid, precise localization of such a burst, for which no counterpart has yet been observed. The 25-100 keV fluence was ~2x10^-7 erg/cm^2, and the 0.03125 s peak flux was ~3.5x10^-6 erg/cm^2 s. We have localized this burst to a preliminary 30 sq. arcmin. error box whose coordinates (3 sigma) are: RA(2000) DEC(2000) 2 h 33 m 58.74 s 17 o 8 ' 51.49 " (CENTER) 2 h 34 m 6.89 s 17 o 10 ' 9.17 " (CORNER) 2 h 33 m 35.94 s 16 o 57 ' 49.88 " (CORNER) 2 h 34 m 21.56 s 17 o 19 ' 53.67 " (CORNER) 2 h 33 m 50.58 s 17 o 7 ' 33.82 " (CORNER) This error box may be refined considerably.