* Astronomy

Orbital elements:
2012 SM50                                                Earth MOID = 0.1063 AU
Epoch 2012 Sept. 30.0 TT = JDT 2456200.5                MPC
M 313.80685              (2000.0)            P               Q
n   0.74628270     Peri.   63.95427     +0.41726028     -0.90875931
a   1.2037431      Node     1.44184     +0.69993067     +0.31637536
e   0.1346233      Incl.   16.38216     +0.57964723     +0.27214543
P   1.32           H   24.3           G   0.15           U   7

MPEC 2012 - S73

The 36 - 81 metre wide asteroid 2012 SM50 will make a close pass (41.8 lunar distances, 0.1074 AU), travelling at 8.68 km/second, to the Earth-Moon system on the 30th September, 2012 @ 05:36 UT ±02:52. 

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