* Astronomy

Orbital elements:
2013 NJ4                                                 Earth MOID = 0.0045 AU
Epoch 2013 Apr. 18.0 TT = JDT 2456400.5                 MPC
M 243.51758              (2000.0)            P               Q
n   0.82322522     Peri.  239.32153     +0.99699384     +0.07498240
a   1.1275183      Node   116.37203     -0.06152518     +0.91926359
e   0.2014212      Incl.    1.24825     -0.04709492     +0.38643512
P   1.20           H   27.3           G   0.15           U   6

MPEC 2013 - N13

Key to Orbital elements

The 9 - 20 metre wide asteroid 2013 NJ4 will make a close pass (3.9 lunar distances, 0.0101 AU), travelling at 5.40 km/second, to the Earth-Moon system on the 7th July, 2013 @ 16:51 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).