Update: The 17 - 38 metre wide asteroid 2012 DZ made a close pass (2.6 lunar distances, 0.0064 AU), travelling at 16.46 km/second, to the Earth-Moon system on the 22nd February, 2012 @ 23:03 UT ±00:01.
Orbital elements:
2012 DZ Earth MOID = 0.0026 AU
Epoch 2012 Mar. 14.0 TT = JDT 2456000.5 MPC
M 353.75924 (2000.0) P Q
n 0.29791992 Peri. 251.00460 -0.78329799 +0.62152947
a 2.2202558 Node 327.42010 -0.56159700 -0.71581687
e 0.6544676 Incl. 1.28301 -0.26655781 -0.31828813
P 3.31 H 26.0 G 0.15 U 9
The 17 - 38 metre wide asteroid 2012 DZ will make a close pass (2.6 lunar distances, 0.0066AU), travelling at 16.30 km/second, to the Earth-Moon system on the 22nd February, 2012 @ 23:58 UT ±04:27.