The 22 - 48 metre wide asteroid 2009 XZ6 made a close pass (5.8 lunar distances, 0.0148 AU), travelling at 5.19 km/second, to the Earth-Moon system on the 13th December, 2009.
Orbital elements: 2009 XZ6 Earth MOID = 0.0147 AU Epoch 2010 Jan. 4.0 TT = JDT 2455200.5 MPC M 35.36418 (2000.0) P Q n 0.72612213 Peri. 325.99528 +0.62367097 -0.77340536 a 1.2259223 Node 85.15374 +0.74013531 +0.53755948 e 0.2054403 Incl. 6.53969 +0.25146421 +0.33596718 P 1.36 H 25.4 G 0.15 U 8