GRB 991226

K. Hurley, on behalf of the Ulysses GRB team, M. Feroci, on behalf
of the BeppoSAX GRB team, and T. Cline, on behalf of the NEAR GRB
team, report:

Ulysses, the BeppoSAX GRBM, and NEAR observed a ~25 s long burst
whose 25-100 keV fluence was ~2 x 10^-6 erg/cm^2 on December 26, 
1999 at 14:59:57 UT.  We have triangulated this burst to two
possible ~70 sq. arcmin. error boxes, whose coordinates are given
below.  Further examination of the BeppoSAX data should allow us
to determine which of the intersections the burst originates
from.

       RA(2000)        DEC(2000)          
14 h 38 m 50.18 s    -61 o 26 '   9.81 "    
14 h 38 m 17.77 s    -61 o 41 '  15.52 "    
14 h 38 m 36.73 s    -61 o 14 '  11.84 "    
14 h 38 m  4.71 s    -61 o 29 '  22.01 "     

           OR

      RA(2000)          DEC(2000)
13 h 14 m 42.16 s     -1 o 46 '  50.68 "
13 h 13 m 54.72 s     -1 o 36 '  44.08 "
13 h 15 m  4.53 s     -1 o 57 '  32.89 "
13 h 14 m 17.01 s     -1 o 47 '  21.34 "

BEPPOSAX GRBM Localization of GRB991226
 
 B. Preger and F. Frontera, on behalf of the BeppoSAX GRBM team, 
 K. Hurley, on behalf of the Ulysses GRB team, and T. Cline, on 
 behalf of the NEAR GRB team, report:
 
 The BeppoSAX GRBM data for GRB 991226, for which two possible
 ~70 sq. arcmin. error boxes were reported (Hurley, Feroci and 
 Cline, GCN #509
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 ), were used to derive a rough independent 
 localization of the GRB source. On the basis of that analysis 
 the following intersection derived from the IPN has the highest 
 probability to be the correct one:
 
        RA(2000)        DEC(2000)          
 14 h 38 m 50.18 s    -61 o 26 '   9.81 "    
 14 h 38 m 17.77 s    -61 o 41 '  15.52 "    
 14 h 38 m 36.73 s    -61 o 14 '  11.84 "    
 14 h 38 m  4.71 s    -61 o 29 '  22.01 "