GCN Circular 1707

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

D. M. Smith, R. P. Lin, J. McTiernan, R. Schwartz, C. Wigger, W. Hajdas, 
and A. Zehnder, on behalf of the RHESSI GRB team, report:

Ulysses, Mars Odyssey-HEND, and RHESSI observed this GRB
(GCN1706
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 ) at 64710 seconds.  As observed by Ulysses, it had a duration
of approximately  30 seconds, a 25-100 keV fluence of approximately
8.7E-06 erg/cm2, and a peak flux of approximately  7.8E-07 erg/cm2 s
over 0.50 seconds.

We have triangulated it to a preliminary, 3 sigma error box whose
approximate area is 111. sq. arcmin. and whose coordinates are:

    RA(2000)                              DEC(2000)
 ERROR BOX CENTER:  19 h 47 m 42.76 s     28 o 17 '   8.06 " 
 ERROR BOX CORNER 1: 19 h 46 m 49.27 s     28 o  9 '  14.20 " 
 ERROR BOX CORNER 2: 19 h 47 m 47.73 s     28 o 13 '   9.68 " 
 ERROR BOX CORNER 3: 19 h 47 m 37.78 s     28 o 21 '   6.43 " 
 ERROR BOX CORNER 4: 19 h 48 m 36.40 s     28 o 25 '   0.85 " 

Assuming that the INTEGRAL-IBIS localization is a circle
with 30 arcminute radius, this error box lies entirely
within it and reduces its area by a factor of about 25.

An image will be posted shortly at ssl.berkeley.edu/ipn3/021125.

This error box may be improved.