* Astronomy

Orbital elements:
2012 YL7                                                 Earth MOID = 0.0862 AU
Epoch 2012 Sept. 30.0 TT = JDT 2456200.5                MPC
M 296.28374              (2000.0)            P               Q
n   0.55233597     Peri.  325.03361     -0.46340848     -0.88593709
a   1.4711846      Node   152.55885     +0.82221754     -0.43795094
e   0.2755955      Incl.    2.38595     +0.33047073     -0.15269072
P   1.78           H   22.6           G   0.15           U   6

MPEC 2013 - A09

The 76 - 170 metre wide asteroid 2012 YL7 will make a close pass (51.6 lunar distances, 0.1325 AU), travelling at 4.14 km/second, to the Earth-Moon system on the 25th January, 2013 @ 14:14 UT ±02:38. 

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