* Astronomy

Orbital elements:
2013 CW129                                               Earth MOID = 0.0031 AU
Epoch 2013 Apr. 18.0 TT = JDT 2456400.5                 MPC
M   1.48994              (2000.0)            P               Q
n   0.75613599     Peri.  273.39306     -0.28984384     +0.95705344
a   1.1932628      Node   339.75494     -0.87075181     -0.26641311
e   0.5186439      Incl.    1.03749     -0.39721763     -0.11433618
P   1.30           H   27.7           G   0.15           U   8

MPEC 2013 - D17

Key to Orbital elements

The 7 - 17 metre wide asteroid 2013 CW129 will make a close pass (1.3 lunar distances, 0.0034 AU), travelling at 16.73 km/second, to the Earth-Moon system on the 18th February, 2013 @ 16:04 UT ±01:49. 

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