* Astronomy

Orbital elements:
2011 WP4                                                 Earth MOID = 0.0037 AU
Epoch 2011 Aug. 27.0 TT = JDT 2455800.5                 MPC
M 273.32273              (2000.0)            P               Q
n   0.62368301     Peri.  260.86741     -0.66398029     -0.74758145
a   1.3567300      Node   230.74905     +0.69384916     -0.60806223
e   0.4122466      Incl.    1.17499     +0.27875353     -0.26717466
P   1.58           H   26.7           G   0.15           U   8

MPEC 2011 - W25

The 12 - 27 metre wide asteroid 2011 WP4 will make a close pass (1.5 lunar distances, 0.0038 AU), travelling at 10.84 km/second, to the Earth-Moon system on the 24th November, 2011 @ 08:13 UT ±00:42.

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