TITLE:   GCN CIRCULAR
NUMBER:  2501
SUBJECT: GRB031225a triangulation (annulus)
DATE:    03/12/26 16:17:19 GMT
FROM:    Dmitry Frederiks at Ioffe Institute  <fred@mail.ioffe.ru>

S. Golenetskii, E. Mazets, V. Pal'shin, and D. Frederiks on behalf
of Konus-Wind and Helicon/Coronas-F teams,

T. Cline, on behalf of the Konus GRB team,

GRB031225a was detected by Konus-Wind at 08:52:41.089 UT
and Helicon-Coronas-F at 08:52:40.131 UT. It has a duration of ~80 sec.

We have triangulated it to a preliminary annulus centered at
RA(2000) = 270.474 deg,
Decl(2000) = -19.720 deg,
Radius = 83.0 +/- 1.5 degrees (3 sigma ).