* Astronomy

Orbital elements:
2011 WR41                                                Earth MOID = 0.0396 AU
Epoch 2011 Aug. 27.0 TT = JDT 2455800.5                 MPC
M  55.37753              (2000.0)            P               Q
n   1.35787641     Peri.  349.32992     -0.39770696     +0.91292192
a   0.8076612      Node   257.18523     -0.83472609     -0.40148462
e   0.3535985      Incl.    5.39423     -0.38086943     -0.07337348
P   0.73           H   25.0           G   0.15           U   8

MPEC 2011 - W57

The 27 - 61 metre wide asteroid 2011 WR41 will make a close pass (40.6 lunar distances, 0.1044 AU), travelling at 7.76 km/second, to the Earth-Moon system on the 7th December, 2011 @ 13:49 UT ±14:45.

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