* Astronomy

Orbital elements:
2012 XF112                                               Earth MOID = 0.1918 AU
Epoch 2012 Sept. 30.0 TT = JDT 2456200.5                MPC
M 342.04749              (2000.0)            P               Q
n   0.17438104     Peri.  169.38991     -0.33703679     -0.92720584
a   3.1729985      Node   300.13212     +0.84937551     -0.22458114
e   0.6307093      Incl.   10.88952     +0.40616184     -0.29975430
P   5.65           H   19.8           G   0.15           U   7

MPEC 2012 - X74

The 300 - 680 metre wide asteroid 2012 XF112 will make a close pass (74.5 lunar distances, 0.1914 AU), travelling at 7.89 km/second, to the Earth-Moon system on the 14th January, 2013 @ 03:36 UT ±05:27. 

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