* Astronomy

Orbital elements:
2007 WB                                                  Earth MOID = 0.1884 AU
Epoch 2010 Jan. 4.0 TT = JDT 2455200.5                  MPC
M  43.20626              (2000.0)            P               Q
n   0.45710242     Peri.  203.65328     +0.27775334     +0.93121109
a   1.6690155      Node    83.15502     -0.83909335     +0.35478805
e   0.7094722      Incl.   13.75087     -0.46773436     -0.08349461
P   2.16           H   18.8           G   0.15           U   4

MPEC 2009 - W32

The 490 - 1000 metre wide asteroid 2007 WB made a close pass (0.4527 AU) to the Earth-Moon system on the 13th November, 2009.

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