* Astronomy

Orbital elements:
2012 XP55                                                Earth MOID = 0.0115 AU
Epoch 2012 Sept. 30.0 TT = JDT 2456200.5                MPC
M 312.89915              (2000.0)            P               Q
n   0.36498630     Peri.   76.99639     -0.92096038     -0.38669866
a   1.9391810      Node    80.23808     +0.33600573     -0.85039994
e   0.5967883      Incl.    2.78693     +0.19731227     -0.35676897
P   2.70           H   24.0           G   0.15           U   8

MPEC 2012 - X50

The 41 - 92 metre wide asteroid 2012 XP55 will make a close pass (9.1 lunar distances, 0.0234 AU), travelling at 14.06 km/second, to the Earth-Moon system on the 27th December, 2012 @ 08:28 UT ±02:18. 

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