* Astronomy

Orbital elements:
2009 SJ1                                                 Earth MOID = 0.0310 AU
Epoch 2009 June 18.0 TT = JDT 2455000.5                 MPC
M 311.64905              (2000.0)            P               Q
n   0.55845188     Peri.  354.42362     +0.98303524     +0.18271209
a   1.4604237      Node   354.96266     -0.16041851     +0.81401371
e   0.2905721      Incl.   10.54063     -0.08892475     +0.55136011
P   1.76           H   26.3           G   0.15           U   9

MPEC 2009 - S39

The 15 - 33 metre wide asteroid 2009 SJ1 made a close pass (11.9 Lunar Distances, 0.0305 AU), travelling at 7.33 km/s, to the Earth-Moon system on the 15th 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).