* Astronomy

Orbital elements:
2010 HF                                                  Earth MOID = 0.0066 AU
Epoch 2010 July 23.0 TT = JDT 2455400.5                 MPC
M  46.79195              (2000.0)            P               Q
n   0.47597530     Peri.  348.69980     -0.90928222     +0.41600312
a   1.6246000      Node   215.89047     -0.38020620     -0.84219076
e   0.3788446      Incl.    1.18609     -0.16926045     -0.34301040
P   2.07           H   25.9           G   0.15           U   6

MPEC 2010 - H18

Asteroid 2010 HF was discovered by the LINEAR monitoring telescope on the 18th April, 2010.
The 18 - 40 metre wide asteroid 2010 HF will make a close pass (2.3 lunar distances, 0.0060 AU), travelling at 5.28 km/second, to the Earth-Moon system on the 20th April, 2010.

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