TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2251 SUBJECT: IPN triangulation of GRB030523B (annulus) DATE: 03/05/27 20:21:02 GMT FROM: Kevin Hurley at UCBerkeley/SSL K. Hurley, on behalf of the Ulysses 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, 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: Konus and RHESSI observed this GRB at 51053 seconds. As observed by Konus, it had a duration of about 200 ms. We have triangulated it to an annulus centered at RA, Decl. (2000)=51.987, 22.172 degrees, whose radius is 40.506 +/- 2.948 degrees (3 sigma). As this annulus does not include any of the known soft gamma repeaters, this is probably a short/hard GRB. This annulus can be constrained and/or improved, but as the event was not observed by Ulysses or Mars Odyssey, a small error box cannot be derived for it.