TITLE: GCN CIRCULAR NUMBER: 17026 SUBJECT: IPN Triangulation of GRB 141104A (long/very bright) DATE: 14/11/05 14:01:33 GMT FROM: Valentin Pal'shin at Ioffe Inst 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, I. G. Mitrofanov, D. Golovin, M. L. Litvak, and A. B. Sanin, on behalf of the HEND-Odyssey GRB team, S. Barthelmy, J. Cummings, N. Gehrels, H. Krimm, and D. Palmer, on behalf of the Swift-BAT 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 long-duration, very bright GRB 141104A has been observed by Swift (BAT), Konus-Wind, Mars Odyssey (HEND), MESSENGER (GRNS), and INTEGRAL (SPI-ACS), so far, at about 200 s UT (00:03:20). 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: 279.488 (18h 37m 57s) -12.702 (-12d 42' 07") Corners: 279.368 (18h 37m 28s) -12.296 (-12d 17' 45") 279.549 (18h 38m 12s) -12.326 (-12d 19' 32") 279.607 (18h 38m 26s) -13.111 (-13d 06' 38") 279.426 (18h 37m 42s) -13.078 (-13d 04' 41") --------------------------------------------- The error box area is 492 sq. arcmin, and its maximum dimension is 51 arcmin (the minimum one is 10 arcmin). The Sun distance was 58.5 deg. A triangulation map is posted at http://www.ioffe.ru/LEA/GRBs/GRB141104_T00199/IPN/ The Konus-Wind time history and spectrum will be given in a forthcoming GCN Circular.