TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  1876
SUBJECT: IPN triangulation of GRB030220 (annulus)
DATE:    03/02/21 18:00:55 GMT
FROM:    Kevin Hurley at UCBerkeley/SSL  <khurley@sunspot.ssl.berkeley.edu>

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

A. von Kienlin, G. Lichti, and A. Rau, on behalf of the
INTEGRAL SPI-ACS GRB team, 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, INTEGRAL (SPI-ACS), and HETE-FREGATE (H2601) observed this
burst at 58364 seconds.  As observed by Ulysses, it had a duration of
approximately  50 seconds, a 25-100 keV fluence of approximately
9.7E-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)=170.434, +41.934 degrees, whose radius is
52.468 +/- 0.065 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.