* Astronomy

Orbital elements:
2012 KC45                                                Earth MOID = 0.0049 AU
Epoch 2012 Mar. 14.0 TT = JDT 2456000.5                 MPC
M 337.86536              (2000.0)            P               Q
n   0.77575762     Peri.  307.94940     -0.95358088     +0.26810798
a   1.1730558      Node   247.97559     -0.20832614     -0.91612570
e   0.1819970      Incl.    8.50601     -0.21744822     -0.29804666
P   1.27           H   29.4           G   0.15           U   7

MPEC 2012 - K73

The 3 - 8 metre wide asteroid 2012 KC45 made a close pass (2.0 lunar distances, 0.0052 AU), travelling at 6.17 km/second, to the Earth-Moon system on the 28th May, 2012 @ 00:24 UT ±00:01. 

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