TITLE: GCN CIRCULAR NUMBER: 1877 SUBJECT: IPN triangulation of GRB030223 (annulus) DATE: 03/02/25 00:57:01 GMT FROM: Kevin Hurley at UCBerkeley/SSL K. Hurley and T. Cline, on behalf of the Ulysses GRB team, T. Cline, on behalf of the Ulysses and Konus GRB teams, E. Mazets and S. Golenetskii, on behalf of the Konus-Wind 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, and A. von Kienlin, G. Lichti, and A. Rau, on behalf of the INTEGRAL SPI-ACS GRB team, report: Ulysses, Konus-Wind, RHESSI, and INTEGRAL (SPI-ACS) observed this GRB at 35106 seconds. As observed by Ulysses, it had a duration of approximately 10 seconds, a 25-100 keV fluence of approximately 5.8E-06 erg/cm2, and a peak flux of approximately 4.9E-07 erg/cm2 s over 0.25 seconds. We have triangulated it to a preliminary annulus centered at RA, Decl(2000)= 349.492, -41.979 degrees, whose radius is 22.224 +/- 0.137 degrees (3 sigma). This annulus may be constrained and/or improved, but it is not known at this point whether this event was observed by Mars Odyssey, and thus whether a small error box can be derived for it.