TITLE:   GCN CIRCULAR
NUMBER:  1407
SUBJECT: Refined IPN error box for GRB020531
DATE:    02/06/05 01:26:07 GMT
FROM:    Kevin Hurley at UCBerkeley/SSL  <khurley@sunspot.ssl.berkeley.edu>

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

I. Mitrofanov, D. Anfimov, A.Kozyrev, M. Litvak and A.Sanin on behalf of the
HEND/Odyssey GRB team,

W. Boynton, C. Fellows, K. Harshman, C. Shinohara and R.Starr, on behalf of
the GRS/Odyssey GRB team,

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:

We have refined the IPN error box of the short duration, hard spectrum
GRB020531 (GCN 1402) to the following preliminary 3 sigma polygon with
approximately 22 square arcminute area.  Its maximum dimension is about
10 arcminutes, which may facilitate deeper searches.


15 h 15 m 03.57 s    -19 o 24 '  51.00 "  (CENTER)
15 h 14 m 53.98 s    -19 o 24 '  18.15 "  (CORNER)     
15 h 15 m 14.46 s    -19 o 21 '  38.39 "  (CORNER)   
15 h 15 m 17.07 s    -19 o 21 '  35.32 "  (CORNER)
15 h 15 m 12.51 s    -19 o 25 '  32.46 "  (CORNER)
15 h 14 m 53.75 s    -19 o 27 '  58.57 "  (CORNER)   
15 h 14 m 49.67 s    -19 o 28 '  03.27 "  (CORNER)

This error box may be refined further.