TITLE: GCN CIRCULAR NUMBER: 15466 SUBJECT: IPN triangulation of GRB 131108A DATE: 13/11/08 22:58:31 GMT FROM: Kevin Hurley at UCBerkeley/SSL K. Hurley and J. Goldsten, on behalf of the MESSENGER NS GRB team, S. Golenetskii, R. Aptekar, V. Pal'shin, D. Frederiks, D. Svinkin, and T. Cline on behalf of the Konus-Wind team, and A. von Kienlin, X. Zhang, A. Rau, V. Savchenko, E. Bozzo, and C. Ferrigno, on behalf of the INTEGRAL SPI-ACS GRB team, report: GRB 131108A (GCN 15464) has been observed by MESSENGER and INTEGRAL (SPI-ACS) so far. We have triangulated it to a preliminary annulus centered at RA(2000)=211.006 degrees, Dec(2000)=-10.955 degrees, with radius 57.980 +/- 0.055 degrees (3 sigma). This annulus intersects the LAT error circle, reducing its area by about a factor of 7, and forming an error box whose area is approximately 390 sq. arcmin., and whose corners are RA(2000) Dec(2000) 156.363 o=10 h 25 m 27 s 9.411 o= 9 o 24 ' 40 " 156.702 o=10 h 26 m 48 s 10.345 o= 10 o 20 ' 42 " 156.477 o=10 h 25 m 54 s 9.400 o= 9 o 24 ' 00 " 156.797 o=10 h 27 m 11 s 10.283 o= 10 o 16 ' 57 " A map has been posted at ssl.berkeley.edu/ipn3/130811A. This error box can be improved.