The 100 - 220 metre wide asteroid 2009 BC11 will make a close pass (46.4 Lunar Distances, 0.1192 AU) to the Earth-Moon system on the 1st February 2009. See more The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).
Orbital elements: 2009 BC11 Earth MOID = 0.0429 AU Epoch 2008 Nov. 30.0 TT = JDT 2454800.5 MPC M 331.53002 (2000.0) P Q n 0.29517636 Peri. 88.48208 -0.99781256 +0.03626228 a 2.2339923 Node 93.59372 -0.05516656 -0.91746121 e 0.5891143 Incl. 3.17479 +0.03642439 -0.39616912 P 3.34 H 22.1 G 0.15 U 8