* Astronomy

Orbital elements:
2012 SG58                                                Earth MOID = 0.0025 AU
Epoch 2012 Sept. 30.0 TT = JDT 2456200.5                MPC
M 351.65537              (2000.0)            P               Q
n   0.20519957     Peri.   52.92472     +0.38103617     -0.92411710
a   2.8467659      Node    14.75712     +0.80861474     +0.31808424
e   0.7095081      Incl.    6.45089     +0.44827852     +0.21173094
P   4.80           H   23.2           G   0.15           U   7

MPEC 2012 - S82

The 61 - 140 metre wide asteroid 2012 SG58 will make a close pass (12.3 lunar distances, 0.0317 AU), travelling at 16.37 km/second, to the Earth-Moon system on the 3rd October, 2012 @ 10:11 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).