* Astronomy

Orbital elements:
2012 YP3                                                 Earth MOID = 0.0666 AU
Epoch 2012 Sept. 30.0 TT = JDT 2456200.5                MPC
M 311.53630              (2000.0)            P               Q
n   0.53572419     Peri.    5.59122     -0.12174371     -0.99179686
a   1.5014419      Node    91.40580     +0.90914062     -0.12717465
e   0.3013520      Incl.    2.23317     +0.39829865     -0.01286820
P   1.84           H   25.7           G   0.15           U   8

MPEC 2012 - Y24

The 20 - 45 metre wide asteroid 2012 YP3 will make a close pass (26.3 lunar distances, 0.0677 AU), travelling at 3.22 km/second, to the Earth-Moon system on the 30th December, 2012 @ 05:46 UT ±04:49. 

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