* Astronomy

Orbital elements:
2012 WR3                                                 Earth MOID = 0.0239 AU
Epoch 2012 Sept. 30.0 TT = JDT 2456200.5                MPC
M 349.66409              (2000.0)            P               Q
n   0.26211940     Peri.  164.67820     +0.71883812     -0.67547227
a   2.4180760      Node   239.01580     +0.61596839     +0.72847005
e   0.5859515      Incl.   11.05187     +0.32226494     +0.11431802
P   3.76           H   25.7           G   0.15           U   7

MPEC 2012 - W30

The 20 - 44 metre wide asteroid 2012 WR3 made a close pass (9.3 lunar distances, 0.0239 AU), travelling at 10.17 km/second, to the Earth-Moon system on the 18th November, 2012 @ 19:28 UT ±00:01. 

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