TITLE:   GCN CIRCULAR
NUMBER:  28409
SUBJECT: IPN triangulation of GRB 200907A (short)
DATE:    20/09/11 14:22:19 GMT
FROM:    Anna Ridnaia at Ioffe Institute  <ridnaia@mail.ioffe.ru>

K. Hurley, on behalf of the IPN,

I. G. Mitrofanov, D. V. Golovin, A. S. Kozyrev, M. L. Litvak,
and A. B. Sanin, on behalf of the HEND-Odyssey GRB team,

A. Ridnaia, S. Golenetskii, R. Aptekar, D. Frederiks, D. Svinkin,
and T. Cline on behalf of the Konus-Wind team,

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

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

A. Ursi, F. Verrecchia, M. Tavani, N. Parmiggiani, C. Pittori,
A. Bulgarelli, on behalf of the AGILE Team, and

W. Boynton, C. Fellows, K. Harshman, H. Enos, and R. Starr,
on behalf of the GRS-Odyssey GRB team, report:

The short-duration GRB 200907A
(AGILE/MCAL detection: Ursi et al., GCN 28378)
was detected by AGILE (MCAL), Konus-Wind, INTEGRAL (SPI-ACS),
Mars-Odyssey (HEND), and Swift (BAT) at about 51860 s UT (14:24:20).
The burst was outside the coded field of view of the BAT.

We have triangulated it to a preliminary, 3 sigma error box
whose coordinates are:
 ---------------------------------------------
  RA(2000), deg                 Dec(2000), deg
 ---------------------------------------------
 Center:
  141.475 (09h 25m 54s)  -1.433 ( -1d 26' 00")
 Corners:
  141.200 (09h 24m 48s)  -1.061 ( -1d 03' 41")
  141.151 (09h 24m 36s)  -1.497 ( -1d 29' 48")
  141.752 (09h 27m 01s)  -1.796 ( -1d 47' 45")
  141.799 (09h 27m 12s)  -1.366 ( -1d 21' 58")
 ---------------------------------------------
The error box area is 986 sq. arcmin, and its maximum
dimension is 55 arcmin (the minimum one is 24.5 arcmin).
The Sun distance was 26 deg.

This box may be improved.

A triangulation map is posted at
http://www.ioffe.ru/LEA/GRBs/GRB200907_T51859/IPN

The Konus-Wind time history and spectrum will be given in a forthcoming
GCN Circular.