Orbital elements:
2012 QC8 Earth MOID = 0.0572 AU
Epoch 2012 Sept. 30.0 TT = JDT 2456200.5 MPC
M 354.12579 (2000.0) P Q
n 0.21174227 Peri. 45.31995 +0.34928680 -0.93604228
a 2.7878175 Node 24.33280 +0.82771917 +0.28686369
e 0.7660116 Incl. 5.94882 +0.43918072 +0.20379910
P 4.65 H 17.9 G 0.15 U 6
The 690 - 1600 metre wide asteroid 2012 QC8 will make a close pass (22.7 lunar distances, 0.0583 AU), travelling at 20.37 km/second, to the Earth-Moon system on the 14th September, 2012 @ 23:00 UT ±00:16.