{
  "bibcode": "2011GCN.12299....1H",
  "body": "K. Hurley and J. Goldsten, on behalf of the MESSENGER NS GRB team,\n\nS. Golenetskii, R. Aptekar, E. Mazets, V. Pal'shin, D. Frederiks,\nD. Svinkin, and T. Cline, on behalf of the Konus-Wind team,\n\nS. Barthelmy, J. Cummings, N. Gehrels, H. Krimm, and D. Palmer, on\nbehalf of the Swift-BAT team,\n\nD. M. Smith, R. P. Lin, J. McTiernan, R. Schwartz, and W. Hajdas, on\nbehalf of the RHESSI GRB team, report:\n\nOn 2011 August 20 at about 21:27:50 UT, an extremely intense, very long\nduration GRB was observed by Konus-Wind, MESSENGER, RHESSI, and Swift\n(BAT) (outside the coded field of view).  We have triangulated it to a\npreliminary, 3 sigma error box whose area is 0.212 sq. deg. and whose\ncoordinates are:\n------------------------------------------------\n      RA(2000), deg              Dec(2000), deg\n------------------------------------------------\nCenter:\n   157.583 (10h 30m 20s)   -54.605 (-54d 36' 16\")\nCorners:\n   159.392 (10h 37m 34s)   -54.329 (-54d 19' 45\")\n   156.617 (10h 26m 28s)   -54.836 (-54d 50' 09\")\n   155.769 (10h 23m 05s)   -54.841 (-54d 50' 27\")\n   158.541 (10h 34m 10s)   -54.362 (-54d 21' 44\")\n------------------------------------------------\n\nSome improvement to this error box is possible. The time history and\nspectrum will be given in a forthcoming GCN Circular.",
  "circularId": 12299,
  "createdOn": 1314052843000,
  "email": "val@mail.ioffe.ru",
  "subject": "IPN triangulation of GRB 110820B (very long duration, extremely intense)",
  "submitter": "Valentin Pal'shin at Ioffe Inst  <val@mail.ioffe.ru>",
  "eventId": "GRB 110820B"
}