* Astronomy

Orbital elements:
2012 XE112                                               Earth MOID = 0.1131 AU
Epoch 2012 Sept. 30.0 TT = JDT 2456200.5                MPC
M 322.82065              (2000.0)            P               Q
n   0.31163909     Peri.  232.44801     -0.65735286     -0.74387703
a   2.1546072      Node   259.09961     +0.72432470     -0.57954817
e   0.5109191      Incl.    7.05216     +0.20794455     -0.33282260
P   3.16           H   20.6           G   0.15           U   7

MPEC 2012 - X73

The 200 - 450 metre wide asteroid 2012 XE112 will make a close pass (47.6 lunar distances, 0.1223 AU), travelling at 7.83 km/second, to the Earth-Moon system on the 11th January, 2013 @ 11:52 UT ±00:28. 

See more

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