G. Tassone, M.R Daniele, A. Paolino, Scientific Operation Centre,
Telespazio, Roma, M.J.S. Smith, J. in't Zand, Space Research
Organization of the Netherlands (SRON), Utrecht, F. Frontera, C. Guidorzi,
E. Montanari, Universita' di Ferrara, Ferrara, L. Amati, TESRE/CNR,
Bologna, G. Gandolfi, M. Feroci and L.Piro, IAS/CNR, Roma, report:
"The BeppoSAX Gamma Ray Burst Monitor (GRBM) and Wide Field Camera
(WFC unit 2) observed a gamma-ray burst on June 20.23169 UT.
A preliminary analysis reveals a duration of about 15 s in the GRBM,
with a peak photon countrate of 934 cts/s in the 40-700 keV energy
band. In the WFC, the duration is about 20 s and the peak flux is
2.8 Crab (2-26 keV). The position of the X-ray counterpart is
R.A.= 7h 35m 17.2s Decl.= +69d 11' 35" (equinox 2000.0) with a 99%
error radius of 3.6'. A follow-up NFI observation could not be performed
due to solar constraints."