* Astronomy

Orbital elements:
2013 NX                                                  Earth MOID = 0.0554 AU
Epoch 2013 Apr. 18.0 TT = JDT 2456400.5                 MPC
M 161.60483              (2000.0)            P               Q
n   0.93614290     Peri.  312.66280     +0.40926578     -0.90652597
a   1.0349228      Node   112.90884     +0.86655180     +0.35067313
e   0.1698915      Incl.    6.45150     +0.28563876     +0.23502981
P   1.05           H   22.0           G   0.15           U   9

MPEC 2013 - N10

Key to Orbital elements

The 100 - 220 metre wide asteroid 2013 NX will make a close pass (32.9 lunar distances, 0.0846 AU), travelling at 4.57 km/second, to the Earth-Moon system on the 8th August, 2013 @ 23:10 UT ±01:13. 

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