* Astronomy

Orbital elements:
2011 JB10                                                Earth MOID = 0.0180 AU
Epoch 2011 Feb. 8.0 TT = JDT 2455600.5                  MPC
M 296.29060              (2000.0)            P               Q
n   0.70011199     Peri.  181.91428     -0.67602409     +0.71777694
a   1.2561004      Node    45.60319     -0.67293596     -0.50918214
e   0.1824846      Incl.   13.49151     -0.30024761     -0.47489980
P   1.41           H   24.6           G   0.15           U   7

MPEC 2011 - J42

The 33 - 73 metre wide asteroid 2011 JB10 made a close pass (12.1 lunar distances, 0.0310 AU), travelling at 7.63 km/second, to the Earth-Moon system on the 9th May, 2011 @ 05:12 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).