[vsnet-grb-info 13254] Refined IPN Triangulation of GRB 130502B

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  14591
SUBJECT: Refined IPN Triangulation of GRB 130502B
DATE:    13/05/06 22:33:41 GMT
FROM:    Kevin Hurley at UCBerkeley/SSL  <khurley at ssl.berkeley.edu>

K. Hurley and J. Goldsten, on behalf of the MESSENGER NS GRB team, 

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

D. M. Smith, on behalf of the RHESSI GRB team, 

A. von Kienlin, X. Zhang, A. Rau, V. Savchenko, E. Bozzo, and C.
Ferrigno, on behalf of the INTEGRAL SPI-ACS GRB 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,

S. Barthelmy, J. Cummings, N. Gehrels, H. Krimm, and D. Palmer, on behalf of
the Swift-BAT team,

E. Del Monte, I. Donnarumma, Y. Evangelista, M. Feroci, I. Lapshov,
F. Lazzarotto, and M. Marisaldi, on behalf of the AGILE Team, and

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

GRB 130502B (von Kienlin et al., GCN 14530, Kocevski et al., GCN 14532,
Golenetskii et al., GCN 14542, Hurley et al. 14546) was also observed by 
Odyssey.  Using Odyssey data reduces the size of the previous error box
by about a factor of two: 

              RA(2000)                    DEC(2000)

CENTER:  66.714= 4 h 26 m 51 s      71.066= 71 d 03 ' 58 "
CORNERS: 66.893= 4 h 27 m 34 s      71.032= 71 d 01 ' 55 "
         67.092= 4 h 28 m 21 s      70.975= 70 d 58 ' 29 "
         66.334= 4 h 25 m 20 s      71.156= 71 d 09 ' 22 "
         66.535= 4 h 26 m 08 s      71.100= 71 d 05 ' 59 "

The area of this box is about 8 square arcminutes, and it still contains the
Swift-XRT source (Melandri et al., GCN 14540).  A new map has been posted at
ssl.berkeley.edu/ipn3/130502

Some improvement in this error box is possible.