Update: The 60 - 140 metre wide asteroid 2012 CL29 made a close pass (65.0 lunar distances, 0.1671 AU), travelling at 4.83 km/second, to the Earth-Moon system on the 20th February, 2012 @ 21:47 UT ±00:53.
Orbital elements:
2012 CL29 Earth MOID = 0.1631 AU
Epoch 2012 Mar. 14.0 TT = JDT 2456000.5 MPC
M 13.06002 (2000.0) P Q
n 0.42045186 Peri. 171.00495 -0.82495635 -0.56186125
a 1.7646498 Node 334.50961 +0.50929469 -0.69193807
e 0.3482915 Incl. 8.19039 +0.24508353 -0.45335818
P 2.34 H 22.9 G 0.15 U 7
The 68 - 150 metre wide asteroid 2012 CL29 will make a close pass (66.0 lunar distances, 0.1696 AU), travelling at 4.90 km/second, to the Earth-Moon system on the 21st February, 2012 @ 00:56 UT ±19:39.