* Astronomy

Orbital elements:
2009 QC23                                                Earth MOID = 0.0126 AU
Epoch 2009 June 18.0 TT = JDT 2455000.5                 MPC
M 345.26091              (2000.0)            P               Q
n   0.32673480     Peri.  336.68494     +0.57977953     +0.81398804
a   2.0877210      Node   328.71579     -0.73627824     +0.50462013
e   0.5166059      Incl.    3.94934     -0.34892699     +0.28771860
P   3.02           H   25.2           G   0.15           U   7

MPEC 2009 - Q52

The 24 - 55 metre wide asteroid 2009 QC23 made a close pass (8.6 Lunar Distances, 0.0221 AU), travelling at 8.34 km/s, to the Earth-Moon system on the 18th August, 2009.

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