TITLE: GCN CIRCULAR NUMBER: 32559 SUBJECT: Improved IPN error box for GRB 220910A DATE: 22/09/15 18:42:48 GMT FROM: Dmitry Svinkin at Ioffe Institute A.S. Kozyrev, D.V. Golovin, M.L. Litvak, I.G. Mitrofanov, and A.B. Sanin on behalf of the MGNS/BepiColombo team, J. Benkhoff on behalf of the BepiColombo team, D. Svinkin, D. Frederiks, A. Ridnaia, A. Lysenko, and T. Cline on behalf of the Konus-Wind team, A. Goldstein, M. S. Briggs, and C. Wilson-Hodge on behalf of the Fermi GBM team, E. Bozzo and C. Ferrigno, on behalf of the INTEGRAL SPI-ACS GRB team, report: Using the BepiColombo (MGNS) data we have triangulated GRB 220910A (GCNs 32540, 32541, 32550, 32551, 32555) to an improved 3 sigma error box whose coordinates are: --------------------------------------------- RA(2000), deg Dec(2000), deg --------------------------------------------- Center: 8.734 (00h 34m 56s) -1.848 ( -1d 50' 54") Corners: 8.884 (00h 35m 32s) -1.753 ( -1d 45' 11") 9.042 (00h 36m 10s) -2.231 ( -2d 13' 53") 8.584 (00h 34m 20s) -1.943 ( -1d 56' 35") 8.411 (00h 33m 39s) -1.432 ( -1d 25' 53") --------------------------------------------- The error box area is 646 sq. arcmin, and its maximum dimension is 1.019 deg (the minimum one is 19.44 arcmin). The Sun distance was 159 deg. This box may be further improved. An updated triangulation map and HEALPix FITS file are posted at http://www.ioffe.ru/LEA/GRBs/GRB220910_T20910/IPN/