{
  "bibcode": "2022GCN.31649....1K",
  "body": "A.S. Kozyrev, D.V. Golovin, M.L. Litvak, I.G. Mitrofanov, and A.B. Sanin\non behalf of the HEND/Mars-Odyssey team,\n\nA. Ridnaia, D. Frederiks, D. Svinkin, A. Lysenko,\nand 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\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, R. Starr,\nand A.S. Gardner on on behalf of the GRS-Odyssey GRB team,\nreport:\n\nThe long-duration GRB 220222A\n(Fermi-GBM detection: The Fermi GBM team, GCN Circ. 31630;\nSwift/BAT-GUANO detection: Tohuvavohu et al., GCN Circ. 31633)\nhas been detected by Fermi (GBM trigger 667189282), Konus-Wind,\nSwift (BAT), and Mars-Odyssey (HEND), so far,\nat about 8477 s UT (02:21:17).\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   32.630 (02h 10m 31s) -14.008 (-14d 00' 31\")\n Corners:\n   38.241 (02h 32m 58s) -24.843 (-24d 50' 33\")\n   38.323 (02h 33m 18s) -25.232 (-25d 13' 56\")\n   24.966 (01h 39m 52s)  +3.526 ( +3d 31' 33\")\n   24.595 (01h 38m 23s)  +4.715 ( +4d 42' 55\")\n ---------------------------------------------\nThe error box area is 3.6 sq. deg, and its maximum\ndimension is 32.8 deg (the minimum one is 6.7 arcmin).\nThe Sun distance was 51 deg.\n\nThis box may be improved.\n\nThe IPN localization is consistent with, but reduces the area of, the\nFermi GBM Final Real-time localization (GCN Circ. 31630).\n\nA triangulation map and HEALPix FITS file are posted at\nhttp://www.ioffe.ru/LEA/GRBs/GRB220222_T08477/IPN/\n\nThe time history and spectrum will be given in forthcoming\nGCN Circulars.\n\nThis GCN is the corrected version of GCN 31645.\nWe apologize for any confusion this may have caused.",
  "circularId": 31649,
  "createdOn": 1645793498000,
  "email": "ridnaia@mail.ioffe.ru",
  "subject": "IPN triangulation of GRB 220222A",
  "submitter": "Anna Ridnaia at Ioffe Institute  <ridnaia@mail.ioffe.ru>",
  "eventId": "GRB 220222A"
}