TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1833 SUBJECT: IPN triangulation of GRB030127 (annulus) DATE: 03/01/27 17:56:33 GMT FROM: Kevin Hurley at UCBerkeley/SSL K. Hurley and T. Cline, on behalf of the Ulysses and HETE teams, A. von Kienlin, G. Lichti, and A. Rau, on behalf of the INTEGRAL SPI-ACS GRB team, and G. Ricker, J-L Atteia, N. Kawai, D. Lamb, S. Woosley, J. Doty, R. Vanderspek, J. Villasenor, G. Crew, G. Monnelly, N. Butler, J.G. Jernigan, A. Levine, F. Martel, E. Morgan, G. Prigozhin, J. Braga, R. Manchanda, G. Pizzichini, Y. Shirasaki, C. Graziani, M. Matsuoka, T. Tamagawa, K. Torii, T. Sakamoto, A. Yoshida, E. Fenimore, M. Galassi, T. Tavenner, T. Donaghy, M. Boer, J-F Olive, and J-P Dezalay, on behalf of the HETE GRB team, report: Ulysses, INTEGRAL (SPI-ACS) and HETE-FREGATE observed this GRB at 45157 seconds. As observed by Ulysses, it had a duration of approximately 50 seconds, a 25-100 keV fluence of approximately 2.9E-05 erg/cm2, and a peak flux of approximately 1.6E-06 erg/cm2 s over 0.25 seconds. We have triangulated it to a preliminary annulus centered at RA, Decl(2000)= 357.725 -40.065 degrees, whose radius is 66.291 +/- 0.017 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.