* Astronomy

Orbital elements:
2012 UD                                                  Earth MOID = 0.0597 AU
Epoch 2012 Sept. 30.0 TT = JDT 2456200.5                MPC
M 351.50361              (2000.0)            P               Q
n   0.40710855     Peri.   14.95939     +0.89697785     -0.44106611
a   1.8030007      Node    11.35308     +0.38842919     +0.75408198
e   0.4164545      Incl.    8.72369     +0.21107702     +0.48664264
P   2.42           H   23.5           G   0.15           U   7

MPEC 2012 - U17

The 53 - 120 metre wide asteroid 2012 UD made a close pass (27.7 lunar distances, 0.0713 AU), travelling at 6.70 km/second, to the Earth-Moon system on the 15th October, 2012 @ 07:54 UT ±01:19. 

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