The 13 - 29 metre wide asteroid 2009 UC will make a close pass (21.3 lunar distances, 0.0547 AU), travelling at 12.94 km/second, to the Earth-Moon system on the 18th October, 2011 @ 01:59 UT ±02:56.
Orbital elements: 2009 UC Earth MOID = 0.0254 AU Epoch 2010 Jan. 4.0 TT = JDT 2455200.5 MPC M 287.46565 (2000.0) P Q n 1.49637989 Peri. 186.13527 -0.88242937 +0.44020456 a 0.7570214 Node 22.41857 -0.41101183 -0.54977270 e 0.3542503 Incl. 25.79379 -0.22888354 -0.70990839 P 0.66 H 26.5 G 0.15 U 8
The 13 - 30 metre wide asteroid 2009 UC made a close pass (9.6 Lunar Distances, 0.0246 AU), travelling at 13.50 km/s, to the Earth-Moon system on the 15th October, 2009. See more
The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).