GCN Circular 1871

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 61912 seconds (trigger
H2595).  As observed by Ulysses, it had a duration of approximately 40
seconds, a 25-100 keV fluence of approximately  2.7E-06 erg/cm2, and a
peak flux of approximately  3.1E-07 erg/cm2 s over 0.50 seconds.

We have triangulated it to a preliminary annulus centered  at RA,
Decl(2000)= 172.120, +41.675 degrees, whose radius is 35.085 +/-  0.173
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.