GRB 030509

K. Hurley, on behalf of the Ulysses GRB team,

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

A. von Kienlin, G. Lichti, and A. Rau, on behalf of the INTEGRAL
SPI-ACS GRB team, and

T. Cline, on behalf of the Ulysses and Konus GRB teams, report:

Ulysses, Konus-Wind, and INTEGRAL (SPI-ACS)  observed this GRB at 21024
seconds.

As observed by Ulysses, it had a duration of approximately 9 seconds, a
25-100 keV fluence of approximately  1.2E-05 erg/cm2, and a peak flux
of approximately  7.5E-06 erg/cm2 s over 0.50 seconds.

We have triangulated it to a preliminary, 3 sigma error box whose area
is approximately 275 sq. arcmin. and whose coordinates are:

    RA(2000)                 DEC(2000)
  5 h 26 m 24.19 s      7 o  8 '  47.66 "  (CENTER)
  5 h 29 m 29.24 s      6 o  5 '   7.72 "  (CORNER)
  5 h 29 m 32.20 s      6 o  7 '   4.37 "  (CORNER)
  5 h 23 m 14.12 s      8 o 11 '  55.65 "  (CORNER)
  5 h 23 m 16.87 s      8 o 13 '  58.39 "  (CORNER)

This error box may be improved, but it is not known at this point
whether this event was observed by Mars Odyssey, and thus whether a
significantly smaller error box can be derived for it.

K. Hurley, on behalf of the Ulysses GRB team, reports:

The confidence region for one dimension of the error box
of this burst (GCN 2221
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 ) was underestimated.  The correct,
3 sigma error box coordinates are:

    RA(2000)                 DEC(2000)
  5 h 26 m 24.19 s      7 o  8 '  47.66 "  (CENTER)
  5 h 39 m  9.75 s      2 o 55 '   0.26 "  (CORNER)
  5 h 39 m 12.94 s      2 o 56 '  49.85 "  (CORNER)
  5 h 12 m 55.57 s     11 o 46 '  51.06 "  (CORNER)
  5 h 12 m 57.81 s     11 o 49 '   7.90 "  (CORNER)

The area of this error box is approximately 1100 square arcminutes.

I regret any inconvenience caused by this mistake.

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

I. Mitrofanov, S. Charyshnikov, V. Grinkov, 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, 

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

A. von Kienlin, G. Lichti, and A. Rau, 
on behalf of the INTEGRAL SPI-ACS GRB team, report:

Mars Odyssey (GRS) also observed this burst (GCN 2221
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 , 2222
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 ).

We have triangulated it to a  preliminary, 3 sigma error box  
with approximate area 124 square arcminutes whose coordinates are:


    RA(2000)                 DEC(2000)
ERROR BOX CENTER:  5 h 14 m 49.82 s     11 o  8 '  16.84 "  (CENTER)
ERROR BOX CORNER 1:  5 h 14 m 18.14 s     11 o 17 '  52.48 "  (CORNER)
ERROR BOX CORNER 2:  5 h 16 m 46.58 s     10 o 25 '  53.82 "  (CORNER)
ERROR BOX CORNER 3:  5 h 12 m 55.74 s     11 o 49 '  57.16 "  (CORNER)
ERROR BOX CORNER 4:  5 h 15 m 21.64 s     10 o 58 '  38.79 "  (CORNER)

This error box may be improved.