The 21 - 48 metre wide asteroid 2009 WC106 will make a close pass (15.6 lunar distances, 0.0400 AU), travelling at 4.51 km/second, to the Earth-Moon system on the 4th December, 2009.
Orbital elements: 2009 WC106 Earth MOID = 0.0121 AU Epoch 2010 Jan. 4.0 TT = JDT 2455200.5 MPC M 334.63743 (2000.0) P Q n 0.87337758 Peri. 257.55485 -0.76777303 -0.63536771 a 1.0839303 Node 242.93639 +0.61799387 -0.70029381 e 0.1784969 Incl. 5.32600 +0.16913946 -0.32541735 P 1.13 H 25.5 G 0.15 U 8