TITLE:   GCN CIRCULAR
NUMBER:  2340
SUBJECT: IPN triangulation of GRB030731 (annulus)
DATE:    03/08/01 20:41:04 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 event at 18872 s.  As
observed by Ulysses, it had a duration of approximately 40 seconds, a
25-100 keV fluence of approximately  4.7E-06 erg/cm2, and a peak flux
of approximately  4.9E-07 erg/cm2 s over 0.50 seconds.

We have triangulated it to a preliminary annulus centered  at RA,
Decl(2000)= 157.884,  25.534 degrees, whose radius is 78.920 +/-  0.152
degrees (3 sigma).

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