TITLE:   GCN CIRCULAR
NUMBER:  20623
SUBJECT: IPN Triangulation of GRB 170206A (short/hard)
DATE:    17/02/07 21:01:15 GMT
FROM:    Dmitry Svinkin at Ioffe Institute  <svinkin@mail.ioffe.ru>

K. Hurley, on behalf of the IPN,

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

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

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

A. von Kienlin, X. Zhang, A. Rau, V. Savchenko, E. Bozzo,
and C. Ferrigno, on behalf of the INTEGRAL SPI-ACS GRB 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, hard-spectrum GRB 170206A
(Fermi-GBM detection: von Kienlin and Roberts, GCN Circ. 20616;
Fermi-LAT detection: Fana Dirirsa et al., GCN Circ. 20617)
was detected by Fermi (GBM), Konus-Wind, INTEGRAL (SPI-ACS),
and Mars-Odyssey (HEND) at about 39118 s UT (10:51:58).

We have triangulated it to a preliminary, 3 sigma error box whose
coordinates are:
  ---------------------------------------------
   RA(2000), deg                 Dec(2000), deg
  ---------------------------------------------
  Center:
   212.633 (14h 10m 32s) +14.238 (+14d 14' 17")
  Corners:
   212.341 (14h 09m 22s) +14.997 (+14d 59' 50")
   212.901 (14h 11m 36s) +14.095 (+14d 05' 41")
   212.915 (14h 11m 40s) +13.455 (+13d 27' 20")
   212.365 (14h 09m 28s) +14.378 (+14d 22' 41")
  ---------------------------------------------
The error box area is 1156 sq. arcmin, and its maximum
dimension is 1.64 deg (the minimum one is 18.2 arcmin).
The Sun distance was 110 deg.

This box may be improved.

A triangulation map is posted at
http://www.ioffe.ru/LEA/GRBs/GRB170206_T39121/IPN/

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