TITLE: GCN CIRCULAR NUMBER: 681 SUBJECT: IPN localization and time history of GRB000528 DATE: 00/05/30 20:51:09 GMT FROM: Kevin Hurley at UCBerkeley/SSL K. Hurley, on behalf of the Ulysses GRB team, T. Cline and E. Mazets, on behalf of the Konus-Wind GRB team, and F. Frontera, C. Guidorzi, and E. Montanari, on behalf of the BeppoSAX GRBM team, report: Ulysses, Konus, and the BeppoSAX GRBM observed this burst (GCN #677). Triangulation gives a preliminary annulus centered at RA(2000)=129.532, Decl.(2000)=-33.150, with radius 26.478 +/- 0.111 degr. (3 sigma). This annulus intersects the BeppoSAX WFC error circle at two points (RA, Decl.=161.292, -34.013, and RA, Decl.=161.283, -33.950), reducing its area by over a factor of two. A map has been posted at ssl.berkeley.edu/ipn3/000528. This localization can be improved. In addition, we call attention to the fact that the Ulysses data clearly show a second episode of emission which follows the burst by ~600 seconds, with intensity approximately as great as that in the burst itself. It is possible that this is from the same source as the burst; we are investigating whether the Konus or GRBM data can be used to verify this. The time history has been posted at the same site.