* Astronomy

Orbital elements:
2011 WQ4                                                 Earth MOID = 0.0018 AU
Epoch 2011 Aug. 27.0 TT = JDT 2455800.5                 MPC
M 316.83869              (2000.0)            P               Q
n   0.39973772     Peri.  228.82791     +0.07863698     -0.99689963
a   1.8250970      Node   216.66214     +0.91599507     +0.07332779
e   0.4746601      Incl.    0.26016     +0.39340724     +0.02853350
P   2.47           H   26.9           G   0.15           U   7

MPEC 2011 - W26

The 12 - 26 metre wide asteroid 2011 WQ4 will make a close pass (2.0 lunar distances, 0.0051 AU), travelling at 7.55 km/second, to the Earth-Moon system on the 21st November, 2011 @ 23:02 UT ±00:12.

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