* Astronomy

Orbital elements:
2010 OA                                                  Earth MOID = 0.0757 AU
Epoch 2010 July 23.0 TT = JDT 2455400.5                 MPC
M 343.29223              (2000.0)            P               Q
n   0.35205314     Peri.  258.62814     +0.99181413     +0.07239980
a   1.9863872      Node    97.15670     -0.02672908     +0.92318766
e   0.5140889      Incl.    6.08517     -0.12486110     +0.37746896
P   2.80           H   20.4           G   0.15           U   7

MPEC 2010 - O08

The 220 - 480 metre wide asteroid 2010 OA will make a close pass (32.7 lunar distances, 0.0839 AU), travelling at 10.57 km/second, to the Earth-Moon system on the 5th August, 2010 @ 19:22 UT.

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