* Astronomy

Orbital elements:
2013 EC                                                  Earth MOID = 0.0023 AU
Epoch 2013 Apr. 18.0 TT = JDT 2456400.5                 MPC
M 359.97217              (2000.0)            P               Q
n   0.30808329     Peri.  261.31328     -0.44246825     +0.89625229
a   2.1711540      Node   342.32575     -0.77759886     -0.40058925
e   0.6982200      Incl.    5.83802     -0.44672348     -0.19042080
P   3.20           H   27.7           G   0.15           U   7

MPEC 2013 - E05

Key to Orbital elements

The 8 - 17 metre wide asteroid 2013 EC will make a close pass (1.0 lunar distances, 0.0026 AU), travelling at 20.20 km/second, to the Earth-Moon system on the 4th March, 2013 @ 07:35 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).