* Astronomy

Orbital elements:
2013 NH4                                                 Earth MOID = 0.0065 AU
Epoch 2013 Apr. 18.0 TT = JDT 2456400.5                 MPC
M 333.04354              (2000.0)            P               Q
n   0.23743508     Peri.  232.86586     +0.87580786     +0.47639396
a   2.5828913      Node    98.56420     -0.41424347     +0.82433506
e   0.6584664      Incl.    4.49628     -0.24771542     +0.30581124
P   4.15           H   25.8           G   0.15           U   4

MPEC 2013 - N12

Key to Orbital elements

The 18 - 41 metre wide asteroid 2013 NH4 made a close pass (4.3 lunar distances, 0.0112 AU), travelling at 13.55 km/second, to the Earth-Moon system on the 6th July, 2013 @ 05:13 UT ±00:01. 

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