GCN Circular 10554

K. Hurley, on behalf of the IPN team,

I. G. Mitrofanov, D. Golovin, M. L. Litvak, and A. B. Sanin,
on behalf of the HEND-Odyssey GRB team,

W. Boynton, C. Fellows, K. Harshman, H. Enos, and R. Starr, on
behalf of the GRS-Odyssey GRB team,

S. Golenetskii, R. Aptekar, E. Mazets, V. Pal'shin, D. Frederiks, and
T. Cline, on behalf of the Konus-Wind team,

K. Yamaoka, M. Ohno, Y. Hanabata, Y. Fukazawa, T. Takahashi, M. Tashiro,
Y. Terada, T. Murakami, and K. Makishima, on behalf of the Suzaku WAM team,

V. Connaughton, M. Briggs, and C. Meegan, on behalf of the Fermi GBM team,
and

J. Goldsten, on behalf of the MESSENGER NS GRB team, report:

This bright, long GRB was detected by Fermi (GBM), Suzaku (WAM),
Konus-Wind, Mars Odyssey (HEND), and MESSENGER (GRNS) AT 04:07:36 UT on
March 24, 2010.  We have triangulated it to a preliminary, 38 square
arcminute (3 sigma) error box whose coordinates are:


         RA(2000)       Dec(2000)
Center   39.672         -19.287 

Corners  39.713         -19.311
         39.717         -19.449
         39.628         -19.123
         39.632         -19.262

This error box may be improved.  Details of this burst will be presented
in forthcoming GCN Circulars.