TITLE: GCN GRB OBSERVATION REPORT NUMBER: 49 SUBJECT: GRB980329 IPN annulus DATE: 98/04/06 20:12:03 GMT FROM: Kevin Hurley at UC Berkeley K. Hurley (UCB) on behalf of the Ulysses GRB team, M. Feroci (IAS/CNR, Rome) and F. Frontera (ITESRE/CNR, Bologna) on behalf of the BeppoSAX/GRBM Team report: We have derived a preliminary IPN annulus for this burst using Ulysses and the BeppoSAX Gamma-Ray Burst Monitor. The annulus is described by a circle of radius of 49.898 degrees centered at RA(2000) = 154.298 degrees, Declination (2000) = 13.169 degrees. The half-width of the annulus is 0.022 degrees. The annulus intersects the WFC error circle (IAUC 6853) and reduces its area. The intersection points are: RA(2000) Decl (2000) 105.628 o = 7 H 2 M 30 S 38.808 o = 38 o 48 ' 29 " 105.662 o = 7 H 2 M 38 S 38.895 o = 38 o 53 ' 40 " 105.683 o = 7 H 2 M 43 S 38.796 o = 38 o 47 ' 45 " 105.716 o = 7 H 2 M 51 S 38.880 o = 38 o 52 ' 49 " This error box includes the SAX NFI X-ray source (IAUC 6854), radio source (GCN #40) and the optical transient (GCN #48). Further processing will reduce the annulus width. An image may be found at http://ssl.berkeley.edu/ipn3/980329/.