* Astronomy

Orbital elements:
2012 QC18                                                Earth MOID = 0.0666 AU
Epoch 2012 Sept. 30.0 TT = JDT 2456200.5                MPC
M   6.09470              (2000.0)            P               Q
n   0.29988571     Peri.  122.71494     +0.97994327     +0.19824478
a   2.2105425      Node   225.85975     -0.19097539     +0.90523069
e   0.5166155      Incl.    1.61721     -0.05691733     +0.37584093
P   3.29           H   24.0           G   0.15           U   8

MPEC 2012 - Q66

The 42 - 93 metre wide asteroid 2012 QC18 will make a close pass (26.6 lunar distances, 0.0684 AU), travelling at 6.08 km/second, to the Earth-Moon system on the 5th September, 2012 @ 00:19 UT ±00:19. 

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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).