TITLE: GCN CIRCULAR NUMBER: 2266 SUBJECT: IPN triangulation of GRB030601 (annulus) DATE: 03/06/02 23:32:56 GMT FROM: Kevin Hurley at UCBerkeley/SSL K. Hurley, on behalf of the Ulysses GRB team, E. Mazets and S. Golenetskii, on behalf of the Konus-Wind GRB team, A. von Kienlin, G. Lichti, and A. Rau, on behalf of the INTEGRAL SPI-ACS GRB team, and T. Cline, on behalf of the Ulysses and Konus GRB teams, report: Ulysses, Konus-Wind, and INTEGRAL (SPI-ACS) observed this GRB at 79919 seconds. As observed by Ulysses, it had a duration of approximately 20 seconds, a 25-100 keV fluence of approximately 6.5E-06 erg/cm2, and a peak flux of approximately 7.5E-07 erg/cm2 s over 0.25 seconds. We have triangulated it to a preliminary annulus centered at RA, Decl(2000)= 151.992, +33.205 degrees, whose radius is 89.122 +/- 0.029 degrees (3 sigma). This annulus can be constrained and/or improved, but as the event was not observed by Mars Odyssey, a small error box cannot be derived for it.