* Astronomy

Orbital elements:
2011 UC190                                               Earth MOID = 0.0044 AU
Epoch 2011 Aug. 27.0 TT = JDT 2455800.5                 MPC
M 348.46593              (2000.0)            P               Q
n   0.32182319     Peri.  326.46444     +0.99694903     -0.00697316
a   2.1089089      Node    34.19316     +0.04496107     +0.86547207
e   0.5527868      Incl.    7.95162     -0.06380537     +0.50090865
P   3.06           H   26.2           G   0.15           U   6

MPEC 2011 - U99

The 16 - 36 metre wide asteroid 2011 UC190 made a close pass (1.8 lunar distances, 0.0047 AU), travelling at 10.92 km/second, to the Earth-Moon system on the 26th October, 2011 @ 13:11 UT ±00:01.

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