TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2155 SUBJECT: IPN triangulation of GRB030419 (annulus) DATE: 03/04/19 17:28:43 GMT FROM: Kevin Hurley at UCBerkeley/SSL K. Hurley, on behalf of the Ulysses GRB team, A. von Kienlin, G. Lichti, and A. Rau, on behalf of the INTEGRAL SPI-ACS 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: Ulysses, INTEGRAL (SPI-ACS), and Konus-Wind observed this GRB at 04327 seconds. As observed by Ulysses, it had a duration of approximately 50 seconds, a 25-100 keV fluence of approximately 2.3E-05 erg/cm2, and a peak flux of approximately 3.8E-06 erg/cm2 s over 0.25 seconds. We have triangulated it to a preliminary annulus centered at RA, Decl(2000)= 334.193, -39.067 degrees, whose radius is 84.171 +/- 0.014 degrees (3 sigma ). This annulus can be constrained and/or improved, but as the event was not observed by Mars Odyssey, a small error box cannot be derived for it.