* Astronomy

Orbital elements:
2012 XH112                                               Earth MOID = 0.0012 AU
Epoch 2012 Sept. 30.0 TT = JDT 2456200.5                MPC
M 322.99424              (2000.0)            P               Q
n   0.32137019     Peri.   58.16636     -0.78241649     -0.61885852
a   2.1108903      Node    83.50696     +0.54509594     -0.73457618
e   0.6153220      Incl.    4.01450     +0.30115588     -0.27823005
P   3.07           H   27.0           G   0.15           U   7

MPEC 2012 - X75

The 10 - 23 metre wide asteroid 2012 XH112 will make a close pass (1.7 lunar distances, 0.0044 AU), travelling at 14.37 km/second, to the Earth-Moon system on the 15th December, 2012 @ 16:39 UT ±00:06. 

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