* Astronomy

Orbital elements:
2011 YM63                                                Earth MOID = 0.0997 AU
Epoch 2012 Mar. 14.0 TT = JDT 2456000.5                 MPC
M  10.19435              (2000.0)            P               Q
n   0.28203769     Peri.  181.58409     -0.78565759     -0.61845859
a   2.3028445      Node   320.19795     +0.56788276     -0.71077246
e   0.5282071      Incl.    1.41852     +0.24546142     -0.33512907
P   3.49           H   22.3           G   0.15           U   7

MPEC 2012 - A18

The 92 - 210 metre wide asteroid 2011 YM63 will make a close pass (49.7 lunar distances, 0.1277 AU), travelling at 6.29 km/second, to the Earth-Moon system on the 2nd February, 2012 @ 03:18 UT ±00:38.

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