* Astronomy

Orbital elements:
2013 HN11                                                Earth MOID = 0.1533 AU
Epoch 2013 Apr. 18.0 TT = JDT 2456400.5                 MPC
M 359.75094              (2000.0)            P               Q
n   0.27560304     Peri.  144.02794     -0.91259193     +0.39803284
a   2.3385503      Node    59.68438     -0.39587339     -0.80294418
e   0.5105511      Incl.    6.21922     -0.10227526     -0.44367838
P   3.58           H   22.2           G   0.15           U   8

MPEC 2013 - H31

Key to Orbital elements

The 58 - 130 metre wide asteroid 2013 HN11 will make a close pass (69.4 lunar distances, 0.1785 AU), travelling at 6.74 km/second, to the Earth-Moon system on the 27th April, 2013 @ 07:49 UT ±04:00. 

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