TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1043 SUBJECT: IPN Triangulation of the Giant Flare from SGR1900+14 DATE: 01/04/18 21:33:55 GMT FROM: Kevin Hurley at UCBerkeley/SSL K. Hurley, on behalf of the Ulysses GRB team, and E. Montanari, C. Guidorzi, F. Frontera, and M. Feroci, on behalf of the BeppoSAX GRBM team, report: Ulysses observed the giant flare reported in GCN 1041. As observed by Ulysses, this flare had a duration ~40 s, a 25-100 keV fluence ~2.6 x 10^-4 erg/cm^2, and a peak flux over 0.5 s ~1.7x10^-5 erg/cm^2 s (or about 25 and 200 times less fluence and peak flux than the giant flare of 1998 August 27). As Ulysses was in a solar proton flux, these numbers are subject to more than the usual uncertainties. Triangulation confirms that this flare is indeed from SGR1900+14 as reported in GCN 1041. The time history of this flare is quite unusual, and will be posted at ssl.berkeley.edu/ipn3/ newdata.html/010418.