* Astronomy

Orbital elements:
2009 SS171                                               Earth MOID = 0.1019 AU
Epoch 2009 June 18.0 TT = JDT 2455000.5                 MPC
M 302.01089              (2000.0)            P               Q
n   0.47084824     Peri.  199.85675     +0.90329733     -0.42811975
a   1.6363722      Node   185.72572     +0.42150083     +0.89765633
e   0.3333094      Incl.   16.12128     +0.07994363     +0.10453038
P   2.09           H   24.8           G   0.15           U   8

MPEC 2009 - S132

The 30 - 66 metre wide asteroid 2009 SS171 will make a close pass (40.1 Lunar Distances, 0.1031 AU), travelling at 9.29 km/s, to the Earth-Moon system on the 3rd October, 2009.

See more

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