* Astronomy

Orbital elements:
2011 YY10                                                Earth MOID = 0.1367 AU
Epoch 2012 Mar. 14.0 TT = JDT 2456000.5                 MPC
M  37.01936              (2000.0)            P               Q
n   0.49643875     Peri.    7.05869     -0.13266646     -0.89809579
a   1.5796429      Node    91.22035     +0.88764074     -0.29589077
e   0.2921693      Incl.   24.79724     +0.44101419     +0.32538072
P   1.99           H   24.3           G   0.15           U   8

MPEC 2011 - Y41

The 37 - 82 metre wide asteroid 2011 YY10 made a close pass (52.7 lunar distances, 0.1354 AU), travelling at 13.42 km/second, to the Earth-Moon system on the 24th December, 2011 @ 06:59 UT ±02:15.

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