GCN Circular 1891

K. Hurley, on behalf of the Ulysses GRB team,

D. M. Smith, R. P. Lin, J. McTiernan, R. Schwartz, C. Wigger, W.
Hajdas, and A. Zehnder, on behalf of the RHESSI 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, RHESSI, and Konus-Wind  observed this GRB at 54173 seconds.
As observed by Ulysses, it had a duration of approximately 80 seconds,
a 25-100 keV fluence of approximately  9.0E-06 erg/cm2, and a peak flux
of approximately  5.2E-07 erg/cm2 s over 0.50 seconds.

We have triangulated it to a preliminary annulus centered  at RA,
Decl(2000)= 168.733, 42.050 degrees, whose radius is 67.501 +/-  0.172
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.