* Astronomy

Orbital elements:
2011 SL189                                               Earth MOID = 0.0381 AU
Epoch 2011 Aug. 27.0 TT = JDT 2455800.5                 MPC
M 340.07338              (2000.0)            P               Q
n   0.27361383     Peri.   62.89339     +0.63109506     -0.77568899
a   2.3498710      Node   347.97161     +0.70282121     +0.57454680
e   0.5650046      Incl.    1.39146     +0.32827027     +0.26115621
P   3.60           H   24.9           G   0.15           U   9

MPEC 2011 - S103

The 28 - 63 metre wide asteroid 2011 SL189 will make a close pass (28.9 lunar distances, 0.0742 AU), travelling at 8.40 km/second, to the Earth-Moon system on the 20th October, 2011 @ 20:20 UT ±13:22.

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