* Astronomy

Orbital elements:
2011 UT63                                                Earth MOID = 0.0318 AU
Epoch 2011 Aug. 27.0 TT = JDT 2455800.5                 MPC
M 335.19219              (2000.0)            P               Q
n   0.57326889     Peri.  167.07914     +0.96301753     -0.21095676
a   1.4351495      Node   206.94236     +0.20236362     +0.97701651
e   0.2874159      Incl.   21.71144     +0.17789377     +0.03059387
P   1.72           H   24.9           G   0.15           U   5

MPEC 2011 - U50

The 28 - 63 metre wide asteroid 2011 UT63 made a close pass (12.9 lunar distances, 0.0332 AU), travelling at 12.56 km/second, to the Earth-Moon system on the 20th October, 2011 @ 11:59 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).