{
  "bibcode": "2023GCN.33323....1K",
  "body": "A.S. Kozyrev, D.V. Golovin, M.L. Litvak, I.G. Mitrofanov, and A.B. Sanin\non behalf of the MGNS/BepiColombo and HEND/Mars Odyssey teams,\n\nJ. Benkhoff on behalf of the BepiColombo team,\n\nD. Svinkin, D. Frederiks, A. Ridnaia, A. Lysenko, and\nT. Cline on behalf of the Konus-Wind team,\n\nA. Goldstein, M. S. Briggs, C. Wilson-Hodge,\nand E. Burns on behalf of the Fermi GBM team,\n\nE. Bozzo and C. Ferrigno, on behalf of the INTEGRAL SPI-ACS GRB team,\n\nS. Barthelmy, J. Cummings, H. Krimm, D. Palmer, and A. Tohuvavohu\non behalf of the Swift-BAT team,\n\nand\n\nW. Boynton, C. Fellows, K. Harshman, H. Enos, R. Starr,\nand A.S. Gardner on on behalf of the GRS-Odyssey GRB team,\nreport:\n\nThe long-duration GRB 230209B\n(Fermi-GBM detection: the Fermi GBM team, GCN Circ. 33310;\nSwift/BAT-GUANO detection: Raman et al., GCN Circ. 33315)\nwas detected by Fermi (GBM trigger 697674761), Konus-Wind,\nINTEGRAL (SPI-ACS), Swift (BAT), Mars-Odyssey (HEND),\nand BepiColombo (MGNS) at about 81157 s UT (22:32:37).\nThe burst was outside the coded field of view of the BAT.\n\nWe have triangulated it to a preliminary, error box\nwhose coordinates are:\n  ---------------------------------------------\n   RA(2000), deg                 Dec(2000), deg\n  ---------------------------------------------\n  Center:\n    89.366 (05h 57m 28s) +29.199 (+29d 11' 57\")\n  Corners:\n    89.445 (05h 57m 47s) +29.700 (+29d 41' 58\")\n    89.336 (05h 57m 21s) +30.139 (+30d 08' 22\")\n    89.289 (05h 57m 09s) +28.600 (+28d 35' 59\")\n    89.401 (05h 57m 36s) +27.754 (+27d 45' 15\")\n  ---------------------------------------------\nThe error box area is 674 sq. arcmin, and its maximum\ndimension is 2.4 deg (the minimum one is 6.6 arcmin).\nThe Sun distance was 128 deg.\n\nThis box may be improved.\n\nA triangulation map and HEALPix FITS file are posted at\nhttp://www.ioffe.ru/LEA/GRBs/GRB230209_T81161/IPN\n\nThe Konus-Wind time history and spectrum will be given in a forthcoming\nGCN Circular.",
  "circularId": 33323,
  "createdOn": 1676381105000,
  "email": "svinkin@mail.ioffe.ru",
  "subject": "IPN triangulation of GRB 230209B",
  "submitter": "Dmitry Svinkin at Ioffe Institute  <svinkin@mail.ioffe.ru>",
  "eventId": "GRB 230209B"
}