* Astronomy

Orbital elements:
2011 UW63                                                Earth MOID = 0.0766 AU
Epoch 2011 Aug. 27.0 TT = JDT 2455800.5                 MPC
M 329.74059              (2000.0)            P               Q
n   0.42513846     Peri.   19.28542     +0.69545897     -0.68799497
a   1.7516572      Node    27.91289     +0.58726782     +0.37790914
e   0.3967079      Incl.   26.29310     +0.41406923     +0.61955436
P   2.32           H   22.4           G   0.15           U   6

MPEC 2011 - U53


The 89 - 200  metre wide asteroid 2011 UW63 made a close pass (35.5 lunar distances, 0.0912 AU), travelling at 15.55 km/second, to the Earth-Moon system on the 21st October, 2011 @ 05:00 UT ±00:02.

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