Update: The 38 - 85 metre wide asteroid 2012 DA14 made a close pass, travelling at 5.49 km/second, to the Earth-Moon system on the 16th February, 2012 @ 06:19 UT ±00:07.
Orbital elements:
2012 DA14 Earth MOID = 0.0002 AU
Epoch 2012 Mar. 14.0 TT = JDT 2456000.5 MPC
M 103.32879 (2000.0) P Q
n 0.98299208 Peri. 271.10866 +0.51514870 -0.85159843
a 1.0017731 Node 147.29585 +0.84032283 +0.47954750
e 0.1082261 Incl. 10.33843 +0.16875831 +0.21169391
P 1.00 H 24.4 G 0.15 U 7