TITLE:   GCN CIRCULAR
NUMBER:  17359
SUBJECT: IPN Triangulation of GRB 150127A
DATE:    15/01/29 21:40:41 GMT
FROM:    Dmitry Svinkin at Ioffe Institute  <svinkin@mail.ioffe.ru>

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

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

S. Golenetskii, R. Aptekar, V. Pal'shin, D. Frederiks,
D. Svinkin, 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, and

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

The long-duration GRB 150127A has been detected by Fermi (GBM: Stanbro 
and von Kienlin, GCN Circ. 17355; LAT (but not localized): Racusin et 
al., GCN Circ. 17356), Konus-Wind, MESSENGER (GRNS), and Mars-Odyssey 
(HEND), so far, at about 34364 s UT (09:32:44).

We have triangulated it to a preliminary, 3 sigma error box whose
coordinates are:
---------------------------------------------
    RA(2000), deg                 Dec(2000), deg
   ---------------------------------------------
   Center:
    296.953 (19h 47m 49s)  -9.416 ( -9d 24' 58")
   Corners:
    297.190 (19h 48m 46s)  -6.883 ( -6d 52' 58")
    296.956 (19h 47m 50s)  -7.457 ( -7d 27' 25")
    296.868 (19h 47m 28s) -13.764 (-13d 45' 49")
    297.021 (19h 48m 05s) -12.130 (-12d 07' 50")
   ---------------------------------------------
The error box area is 1.1 sq. deg, and its maximum
dimension is 6.9 deg (the minimum one is 11 arcmin).
The Sun distance was 13 deg.

This box may be improved.

A triangulation map is posted at
http://www.ioffe.ru/LEA/GRBs/GRB150127_T34360/IPN/

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