TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  2175
SUBJECT: IPN triangulation of GRB030426 (annulus)
DATE:    03/04/27 22:52:12 GMT
FROM:    Kevin Hurley at UCBerkeley/SSL  <khurley@sunspot.ssl.berkeley.edu>

K. Hurley and T. Cline, on behalf of the Ulysses GRB team, and

A. von Kienlin, G. Lichti, and A. Rau, on behalf of the INTEGRAL
SPI-ACS GRB team, report:

Ulysses and INTEGRAL (SPI-ACS) observed this burst at 84600 s.  As
observed by INTEGRAL, it had a duration of approximately 50 s.  Peak
fluxes and fluences cannot be estimated at this time.

We have triangulated it to a preliminary annulus centered  at RA,
Decl(2000)= 152.962, 38.145 degrees, whose radius is 83.022 +/-  0.027
degrees (3 sigma ).

This annulus may be constrained and/or improved, but as this
event was not observed by Mars Odyssey, a small error box cannot
be obtained for it.