* Astronomy

Orbital elements:
2012 UR158                                          PHA, Earth MOID = 0.0040 AU
Epoch 2012 Sept. 30.0 TT = JDT 2456200.5                MPC
M 337.21417              (2000.0)            P               Q
n   0.28366537     Peri.  237.61093     -0.96823561     -0.24424324
a   2.2940269      Node   288.20418     +0.24414145     -0.87725813
e   0.8592469      Incl.    3.23011     +0.05398846     -0.41323531
P   3.47           H   20.3           G   0.15           U   8

MPEC 2012 - U104

The 220 - 490 metre wide asteroid 2012 UR158 will make a close pass (24.9 lunar distances, 0.0641 AU), travelling at 30.91 km/second, to the Earth-Moon system on the 8th November, 2012 @ 21:12 UT ±00:13. 

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