TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1660 SUBJECT: IPN triangulation of GRB021027 (two large error boxes) DATE: 02/10/28 18:54:54 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 GRB team, and T. Cline, on behalf of the Ulysses and Konus GRB teams, report: The Konus ecliptic latitude response restricts the IPN annulus (RA, Decl(2000)=178.852, +35.645, radius 68.409 +/- 0.139 degrees, GCN 1658) to two sections, one between RA, Decl. ~ 99, +23 and 115, +1, and the other between RA, Decl. ~ 200.,-30, and 225.,-17. It is still not known whether this burst was observed by MO, and thus whether a small error box can be derived for it.