* Astronomy

Orbital elements:
2010 OA1                                                 Earth MOID = 0.0023 AU
Epoch 2010 July 23.0 TT = JDT 2455400.5                 MPC
M 350.40695              (2000.0)            P               Q
n   0.42482771     Peri.  209.22104     +0.85045725     +0.51254250
a   1.7525113      Node   119.47327     -0.45236214     +0.82746215
e   0.4409650      Incl.    7.81762     -0.26849760     +0.22936123
P   2.32           H   23.3           G   0.15           U   7

MPEC 2010 - O19

The 64 - 140 metre wide asteroid 2010 OA1 made a close pass (9.2 lunar distances, 0.0236 AU), travelling at 9.21 km/second, to the Earth-Moon system on the 18th July, 2010 @ 16:14 UT.

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