* Astronomy

Orbital elements:
2010 ES12                                                Earth MOID = 0.0033 AU
Epoch 2010 Jan. 4.0 TT = JDT 2455200.5                  MPC
M 353.45381              (2000.0)            P               Q
n   0.27767478     Peri.  312.36775     -0.35828536     -0.93351083
a   2.3269038      Node   158.61541     +0.86727557     -0.33824529
e   0.6396448      Incl.    2.16157     +0.34563664     -0.11894395
P   3.55           H   25.6           G   0.15           U   7

MPEC 2010 - E37

The 20 - 45 metre wide asteroid 2010 ES12 made a close pass (1.3 lunar distances, 0.0034 AU), travelling at 13.64 km/second, to the Earth-Moon system on the 4th March, 2010.

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