* Astronomy

Orbital elements:
2011 WS74                                                Earth MOID = 0.0169 AU
Epoch 2011 Aug. 27.0 TT = JDT 2455800.5                 MPC
M 182.89432              (2000.0)            P               Q
n   1.02990547     Peri.  117.83726     -0.97212144     +0.08164933
a   0.9711161      Node    67.55832     -0.17880701     -0.86455189
e   0.3505901      Incl.   13.75748     +0.15168377     -0.49586632
P   0.96           H   23.8           G   0.15           U   7

MPEC 2011 - W85

The 46 - 100 metre wide asteroid 2011 WS74 will make a close pass (11.3 lunar distances, 0.0291 AU), travelling at 11.90 km/second, to the Earth-Moon system on the 4th December, 2011 @ 01:51 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).