* Astronomy

Orbital elements:
2012 YQ1                                            PHA, Earth MOID = 0.0072 AU
Epoch 2012 Sept. 30.0 TT = JDT 2456200.5                MPC
M 313.25563              (2000.0)            P               Q
n   0.34714594     Peri.   41.98731     -0.94978965     -0.30308574
a   2.0050629      Node   120.21313     +0.25778583     -0.89876086
e   0.5660178      Incl.    5.15924     +0.17733043     -0.31680901
P   2.84           H   21.0           G   0.15           U   8

MPEC 2012 - Y15

The 170 - 390 metre wide asteroid 2012 YQ1 will make a close pass (41.8 lunar distances, 0.1074 AU), travelling at 15.38 km/second, to the Earth-Moon system on the 5th January, 2013 @ 10:42 UT ±00:13. 

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