* Astronomy

Orbital elements:
2013 CF129                                               Earth MOID = 0.0243 AU
Epoch 2013 Apr. 18.0 TT = JDT 2456400.5                 MPC
M  21.78254              (2000.0)            P               Q
n   0.34573772     Peri.    5.81675     -0.82464205     -0.56314874
a   2.0105037      Node   139.75798     +0.51560266     -0.78701411
e   0.4970994      Incl.    4.72265     +0.23263574     -0.25193707
P   2.85           H   26.1           G   0.15           U   7

MPEC 2013 - D04

Key to Orbital elements

The 16 - 36 metre wide asteroid 2013 CF129 made a close pass (9.5 lunar distances, 0.0245 AU), travelling at 6.68 km/second, to the Earth-Moon system on the 12th February, 2013 @ 09:28 UT ±00:02. 

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