Electronic Telegram No. 5221 Central Bureau for Astronomical Telegrams Mailing address: Hoffman Lab 209; Harvard University; 20 Oxford St.; Cambridge, MA 02138; U.S.A. e-mail: cbatiau@eps.harvard.edu (alternate cbat@iau.org) URL http://www.cbat.eps.harvard.edu/index.html Prepared using the Tamkin Foundation Computer Network 2023 CX_1 A small, sub-meter-sized asteroidal object discovered at mag 19.4 by K. Sarneczky on CCD images taken on Feb. 12.85 UT with the Konkoly Observatory's 0.6-m Schmidt telescope at Piszkesteto, Hungary, was given the minor-planet designation 2023 CX_1 (cf. MPEC 2023-C103) and predicted to impact the earth's atmosphere near Normandy, France, less than seven hours later. Numerous reports have been posted online with photographs and videos of a bright fireball as seen from southern England and northern France. This is the seventh known asteroidal object to hit the earth via prediction after being observed and reported when outside the earth's atmosphere (cf. CBETs 4638, 5108). The sixth was found by D. Rankin on 2022 Nov. 19 with the Mt. Lemmon Survey's 1.5-m reflector and designated 2022 WJ_1 (cf. MPEC 2022-W69); it was estimated to be a sub-meter-sized object that hit the earth's atmosphere over Brantford, ON, Canada. NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2023 CBAT 2023 February 13 (CBET 5221) Daniel W. E. Green