* Astronomy

Orbital elements:
2011 KF4                                                 Earth MOID = 0.1476 AU
Epoch 2011 Aug. 27.0 TT = JDT 2455800.5                 MPC
M   1.14509              (2000.0)            P               Q
n   0.22223589     Peri.  281.45483     +0.78560728     +0.60741436
a   2.6993545      Node    41.29398     -0.47494530     +0.71401108
e   0.6282278      Incl.   10.27980     -0.39654529     +0.34818957
P   4.43           H   19.1           G   0.15           U   8

MPEC 2011 - K20

The 390 - 880 wide asteroid 2011 KF4 will make a close pass (57.9 lunar distances, 0.148 AU), travelling at 10.49 km/second, to the Earth-Moon system on the 16th September, 2011 @ 06:04 UT ±1 days 10:51.

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