* Astronomy

Orbital elements:
2012 MM11                                           PHA, Earth MOID = 0.0112 AU
Epoch 2012 Mar. 14.0 TT = JDT 2456000.5                 MPC
M 305.26102              (2000.0)            P               Q
n   0.31908096     Peri.  123.53183     +0.98466054     -0.16710809
a   2.1209745      Node   246.13213     +0.13628712     +0.91621170
e   0.6519749      Incl.    3.14585     +0.10894695     +0.36418541
P   3.09           H   19.8           G   0.15           U   8

MPEC 2012 - M53

The 290 - 660 metre wide asteroid 2012 MM11 will make a close pass (20.6 lunar distances, 0.0530 AU), travelling at 17.77 km/second, to the Earth-Moon system on the 17th July, 2012 @ 09:03 UT ±02:16. 

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