TITLE: GCN CIRCULAR NUMBER: 13462 SUBJECT: IPN Triangulation of GRB 120709A DATE: 12/07/13 17:02:49 GMT FROM: Kevin Hurley at UCBerkeley/SSL K. Hurley and J. Goldsten, on behalf of the MESSENGER GRNS 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, V. Connaughton, M. Briggs, and C. Meegan, on behalf of the Fermi GBM 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 120709A has been observed by Fermi GBM and LAT (GCN 13423, 13427, 13429), INTEGRAL (SPI-ACS), Konus-Wind (GCN 13440), and MESSENGER (GRNS), so far, at about 76300 s UT (21:11:40). A Swift XRT observation of part of the LAT error circle in GCN 13423 revealed an uncataloged X-ray source at RA, Dec = 318.17277, -49.97297 (GCN 13428). We have triangulated this burst to a preliminary, 3 sigma error box whose coordinates are: RA(2000) DEC(2000) 21 h 15 m 22.14 s=318.842 o -50 o 17 ' 56.07 " =-50.290 o (CENTER) 21 h 20 m 51.20 s=320.213 o -50 o 16 ' 14.33 " =-50.271 o (CORNER) 21 h 09 m 08.08 s=317.284 o -50 o 32 ' 41.99 " =-50.545 o (CORNER) 21 h 21 m 34.21 s=320.393 o -50 o 00 ' 17.46 " =-50.005 o (CORNER) 21 h 09 m 55.60 s=317.482 o -50 o 17 ' 28.57 " =-50.291 o (CORNER) The error box area is 0.46 sq. deg., and its maximum and minimum dimensions are ~ 1.9 and 0.12 degrees, respectively. This box may be improved. As the XRT source lies outside the IPN error box, at least 0.26 degrees from its closest side, it is veryy unlikely to be associated with the GRB. A map has been posted at ssl.berkeley.edu/ipn3/120709. On this map, "LAT1" is from GCN 13423, and "LAT2" is from GCN 13427.