* Astronomy

Orbital elements:
2011 WK5                                                 Earth MOID = 0.0795 AU
Epoch 2011 Aug. 27.0 TT = JDT 2455800.5                 MPC
M 327.69070              (2000.0)            P               Q
n   0.30541690     Peri.  184.18552     +0.21542152     -0.97160876
a   2.1837722      Node   253.39566     +0.89887826     +0.23644214
e   0.5121372      Incl.    5.85913     +0.38159067     -0.00845740
P   3.23           H   23.6           G   0.15           U   7

MPEC 2011 - W33

The 55 - 120 metre wide asteroid 2011 WK5  will make a close pass (31.8 lunar distances, 0.0818 AU), travelling at 6.21 km/second, to the Earth-Moon system on the 10th December, 2011 @ 05:31 UT ±02:04.

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