{
  "bibcode": "2021GCN.30154....1H",
  "body": "K. Hurley, on behalf of the IPN,\n\nI. G. Mitrofanov, D. V. Golovin, A. S. Kozyrev, M. L. Litvak,\nand A. B. Sanin, on behalf of the HEND-Odyssey GRB team,\n\nD. Svinkin, S. Golenetskii, D. Frederiks, A. Ridnaia,\nA. Lysenko, and T. Cline on behalf of the Konus-Wind team,\n\nA. Goldstein, M. S. Briggs, and C. Wilson-Hodge\non behalf of the Fermi GBM team,\n\nA. von Kienlin, X. Zhang, A. Rau, V. Savchenko, E. Bozzo,\nand 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, and\n\nW. Boynton, C. Fellows, K. Harshman, H. Enos, and R. Starr,\non behalf of the GRS-Odyssey GRB team, report:\n\nThe bright, long-duration 210606B\n(GECAM detection: Cai et al., GCN Circ. 30138;\nBALROG localization: Kunzweiler et al., GCN Circ. 30139;\nAGILE detection: Ursi et al., GCN Circ. 30142;\nFermi-GBM detection: The Fermi GBM team, GCN Circ. 30147)\nwas detected by Fermi (GBM trigger 644712030), Konus-Wind,\nINTEGRAL (SPI-ACS), Mars-Odyssey (HEND), GECAM, AGILE (SA, MCAL, and AC)\nand Swift (BAT) at about 81625 s UT (22:40:25)\nThe burst was outside the coded field of view of the BAT.\n\nWe have triangulated it to a preliminary, 3 sigma error box\nwhose coordinates are:\n  ---------------------------------------------\n   RA(2000), deg                 Dec(2000), deg\n  ---------------------------------------------\n  Center:\n    87.986 (05h 51m 57s) -16.689 (-16d 41' 19\")\n  Corners:\n    86.597 (05h 46m 23s) -15.596 (-15d 35' 45\")\n    89.249 (05h 57m 00s) -17.675 (-17d 40' 30\")\n    89.394 (05h 57m 35s) -17.719 (-17d 43' 07\")\n    86.742 (05h 46m 58s) -15.651 (-15d 39' 05\")\n  ---------------------------------------------\nThe error box area is 588 sq. arcmin, and its maximum\ndimension is 3.4 deg (the minimum one is 3 arcmin).\nThe Sun distance was 40 deg.\n\nThis box may be improved.\n\nThe IPN localization is consistent with, but reduces the area of, the\nFermi RoboBA and BALROG localizations (GCN Circ. 30147 and 30139).\n\nA triangulation map is posted at\nhttp://www.ioffe.ru/LEA/GRBs/GRB210606_T81665/IPN/\n\nThe Konus-Wind time history and spectrum will be given in a forthcoming\nGCN Circular.",
  "circularId": 30154,
  "createdOn": 1623180893000,
  "email": "svinkin@mail.ioffe.ru",
  "subject": "IPN triangulation of GRB 210606B",
  "submitter": "Dmitry Svinkin at Ioffe Institute  <svinkin@mail.ioffe.ru>",
  "eventId": "GRB 210606B"
}