TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1710 SUBJECT: IPN triangulation of GRB021125B (annulus) DATE: 02/11/26 23:26:31 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, and T. Cline, on behalf of the Ulysses and Konus GRB teams, report: Ulysses and Konus-Wind observed this GRB at 21541 seconds. As observed by Ulysses, it had a duration of approximately 10 seconds, a 25-100 keV fluence of approximately 1.7E-06 erg/cm2, and a peak flux of approximately 7.4E-07 erg/cm2 s over 0.25 seconds. We have triangulated it to a preliminary annulus centered at RA, Decl(2000)= 2.237, -35.258 degrees, whose radius is 85.862 +/- 0.017 degrees (3 sigma ). This annulus may be constrained and/or improved, but as the event was not observed by Mars Odyssey, a small error box cannot be derived for it.