* Astronomy

Orbital elements:
2012 RH15                                                Earth MOID = 0.0547 AU
Epoch 2012 Sept. 30.0 TT = JDT 2456200.5                MPC
M   2.81568              (2000.0)            P               Q
n   0.24944336     Peri.  159.84367     +0.99638555     +0.08288133
a   2.4993174      Node   195.43730     -0.08432020     +0.93845321
e   0.5783599      Incl.    4.01011     -0.01029240     +0.33531517
P   3.95           H   24.5           G   0.15           U   7

MPEC 2012 - S06

The 32 - 71 metre wide asteroid 2012 RH15 will make a close pass (21.2 lunar distances, 0.0544 AU), travelling at 7.19 km/second, to the Earth-Moon system on the 21st September, 2012 @ 17:18 UT ±00:05. 

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