TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  1650
SUBJECT: IPN triangulation of GRB021020 (smaller error box)
DATE:    02/10/22 16:46:25 GMT
FROM:    Kevin Hurley at UCBerkeley/SSL  <khurley@sunspot.ssl.berkeley.edu>

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

E. Mazets and S. Golenetskii, on behalf of the Konus-Wind GRB team,

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, 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, Mars Odyssey (HEND and GRS), HETE-FREGATE, and Konus-Wind
observed this GRB (GCN 1648).  We have confirmed the error box given in
GCN 1648 and reduced it to an ~ 20. sq. arcmin. error box fully
contained within the original one.  Its coordinates are:

    RA(2000)                              DEC(2000)
 ERROR BOX CENTER:  21 h 29 m 10.92 s     51 o 55 '   0.43 " 
 ERROR BOX CORNER 1: 21 h 28 m 45.12 s     51 o 52 '   6.48 " 
 ERROR BOX CORNER 2: 21 h 28 m 14.32 s     51 o 51 '   6.05 " 
 ERROR BOX CORNER 3: 21 h 30 m  7.92 s     51 o 58 '  54.41 " 
 ERROR BOX CORNER 4: 21 h 29 m 36.82 s     51 o 57 '  54.33 " 

This error box may be improved.