* Astronomy

Orbital elements:
2012 BO123                                               Earth MOID = 0.0963 AU
Epoch 2012 Mar. 14.0 TT = JDT 2456000.5                 MPC
M  11.85038              (2000.0)            P               Q
n   0.79386188     Peri.  208.30346     -0.87656169     -0.35592496
a   1.1551528      Node   307.08569     +0.48128800     -0.64992784
e   0.0715958      Incl.   23.96092     -0.00120966     -0.67149923
P   1.24           H   24.8           G   0.15           U   7

MPEC 2012 - C03

The 30 - 66 metre wide asteroid 2012 BO123 made a close pass (37.5 lunar distances, 0.0963 AU), travelling at 12.46 km/second, to the Earth-Moon system on the 28th January, 2012 @ 21:22 UT ±00:37. 

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