The 29 - 64 metre wide asteroid 2009 YA will make a close pass (31.1 lunar distances, 0.0799 AU), travelling at 15.30 km/second, to the Earth-Moon system on the 19th December, 2009.
Orbital elements: 2009 YA Earth MOID = 0.0800 AU Epoch 2010 Jan. 4.0 TT = JDT 2455200.5 MPC M 356.10869 (2000.0) P Q n 0.39895406 Peri. 31.72499 -0.39474985 -0.81637769 a 1.8274863 Node 84.63391 +0.72928632 -0.55747372 e 0.4414809 Incl. 25.04945 +0.55885062 +0.15083276 P 2.47 H 24.8 G 0.15 U 9