The 300 - 680 metre wide asteroid 2012 OP4 will make a close pass (40.5 lunar distances, 0.1040 AU), travelling at 22.57 km/second, to the Earth-Moon system on the 18th August, 2012 @ 00:08 UT ±00:24.
Orbital elements:
2012 OP4 PHA, Earth MOID = 0.0493 AU
Epoch 2012 Sept. 30.0 TT = JDT 2456200.5 MPC
M 358.55412 (2000.0) P Q
n 0.31836197 Peri. 262.54388 +0.65183310 -0.72920261
a 2.1241667 Node 143.86435 +0.75645671 +0.64465198
e 0.6583571 Incl. 20.68215 -0.05372949 +0.22953730
P 3.10 H 19.7 G 0.15 U 8
