TITLE: GCN CIRCULAR NUMBER: 36093 SUBJECT: IPN triangulation of GRB 240410A DATE: 24/04/14 16:23:21 GMT FROM: Anna Ridnaia at Ioffe Institute A.S. Kozyrev, D.V. Golovin, M.L. Litvak, I.G. Mitrofanov, and A.B. Sanin on behalf of the HEND/Mars Odyssey team, A. Ridnaia, D. Frederiks, D. Svinkin, A. Lysenko, and T. Cline on behalf of the Konus-Wind team, E. Bozzo and C. Ferrigno, on behalf of the INTEGRAL SPI-ACS GRB team, S. Barthelmy, J. Cummings, H. Krimm, D. Palmer, and A. Tohuvavohu on behalf of the Swift-BAT team, and W. Boynton, C. Fellows, K. Harshman, H. Enos, R. Starr, and A.S. Gardner on on behalf of the GRS-Odyssey GRB team, report: The long-duration GRB 240410A was detected by INTEGRAL (SPI-ACS), Swift (BAT), Konus-Wind, and Mars-Odyssey (HEND) at about 73409 s UT (20:23:29). The burst was outside the coded field of view of the BAT. We have triangulated it to a preliminary, 3 sigma error box whose coordinates are: --------------------------------------------- RA(2000), deg Dec(2000), deg --------------------------------------------- Center: 109.832 (07h 19m 20s) +30.179 (+30d 10' 43") Corners: 110.414 (07h 21m 39s) +32.327 (+32d 19' 37") 110.411 (07h 21m 39s) +32.546 (+32d 32' 46") 109.265 (07h 17m 04s) +27.655 (+27d 39' 19") 109.268 (07h 17m 04s) +27.350 (+27d 21' 01") --------------------------------------------- The error box area is 957 sq. arcmin, and its maximum dimension is 5.3 deg (the minimum one is 3 arcmin). The Sun distance was 86 deg. This localization may be improved. A triangulation map and HEALPix FITS file are posted at http://www.ioffe.ru/LEA/GRBs/GRB240410_T73409/IPN/ The Konus-Wind time history and spectrum will be given in a forthcoming GCN Circular.