* Astronomy

Orbital elements:
2009 SQ171                                               Earth MOID = 0.0792 AU
Epoch 2009 June 18.0 TT = JDT 2455000.5                 MPC
M 307.86715              (2000.0)            P               Q
n   0.52169646     Peri.  176.46707     +0.99899636     -0.04257800
a   1.5282373      Node   186.02616     +0.03716024     +0.96117965
e   0.2917695      Incl.    7.61203     +0.02500784     +0.27261840
P   1.89           H   25.7           G   0.15           U   7

MPEC 2009 - S130

The 19 - 43 metre wide asteroid 2009 SQ171 made a close pass (31.2 Lunar Distances, 0.0801 AU), travelling at 5.04 km/s, to the Earth-Moon system on the 25th September, 2009.

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