GRB 020926

K. Hurley, on behalf of the Ulysses 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 and Konus observed this burst at 17563 s.  As observed
by Ulysses, it had a duration of ~20 s, a 25-100 keV fluence of
5X10^-6 erg/cm^2, and a peak flux over 0.5 s of 5x10^-7 erg/cm^2 s.
We have triangulated it to an annulus centered at RA, Decl(2000)=
173.261, +37.976 degrees, with radius 81.616 +/- 0.037 degrees
(3 sigma).  In addition, a preliminary analysis of the Konus
data indicates that the burst arrived from an ecliptic latitude
between +2 and +22 degrees.  This limits the annulus to two sections,
one between RA, Dec=236.8, -17.9 and 252.4, -0.3 degrees, and the
other between RA, Dec=74.3, +24.7 and 55.8, +42.3.  As Mars
Odyssey did not observe this event, it will not be possible
to derive a small error box for it.

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

E. Mazets and S. Golenetskii, on behalf of the Konus-Wind 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, and

T. Cline, on behalf of the Ulysses and Konus GRB teams, report:

Ulysses, RHESSI and Konus observed this burst (GCN 1553
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 ).
Triangulation, as well as a detailed analysis of the Konus data,
indicate that this event originated from that section of the annulus
centered at RA, Decl(2000)= 173.261, +37.976 degrees, with radius
81.616 +/- 0.037 degrees (3 sigma), which lies between ecliptic
latitude +18 and +22 degrees.  This limits the annulus to the section
between RA, Dec= 252.4, -0.3 degrees, and 249.5, -3.9 degrees.