* Astronomy

Orbital elements:
2013 LN31                                           PHA, Earth MOID = 0.0420 AU
Epoch 2013 Apr. 18.0 TT = JDT 2456400.5                 MPC
M 324.36251              (2000.0)            P               Q
n   0.29558542     Peri.  278.58641     +0.86391265     -0.32459593
a   2.2319307      Node   101.06806     +0.44895769     +0.84283361
e   0.7999555      Incl.   23.10304     -0.22823655     +0.42926564
P   3.33           H   20.0           G   0.15           U   7

MPEC 2013 - M08

Key to Orbital elements

The 260 - 580 metre wide asteroid 2013 LN31 will make a close pass (38.3 lunar distances, 0.0985 AU), travelling at 25.90 km/second, to the Earth-Moon system on the 2nd July, 2013 @ 04:35 UT ±00:04. 

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