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TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1938 SUBJECT: IPN triangulation of GRB030317 (annulus) DATE: 03/03/17 18:09:55 GMT FROM: Kevin Hurley at UCBerkeley/SSL <khurley@sunspot.ssl.berkeley.edu> K. Hurley and T. Cline, on behalf of the Ulysses and HETE GRB teams, 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 and HETE-FREGATE observed this GRB at 25133 seconds. As observed by Ulysses, it had a duration of approximately 20 seconds, a 25-100 keV fluence of approximately 1.6E-05 erg/cm2, and a peak flux of approximately 1.7E-06 erg/cm2 s over 0.25 seconds. We have triangulated it to a preliminary annulus centered at RA, Decl(2000)= 342.016, -41.985 degrees, whose radius is 42.684 +/- 0.077 degrees (3 sigma ). This annulus may be constrained and/or improved, but as the event was not observed by Mars Odyssey, a small error box cannot be derived for it.
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