* Astronomy

Orbital elements:
2013 ER41                                                Earth MOID = 0.0510 AU
Epoch 2013 Apr. 18.0 TT = JDT 2456400.5                 MPC
M  23.01160              (2000.0)            P               Q
n   0.50352125     Peri.  348.39533     -0.96361563     -0.26578525
a   1.5647952      Node   175.85395     +0.26568661     -0.96403211
e   0.3347777      Incl.   23.07724     +0.02924950     +0.00053346
P   1.96           H   23.1           G   0.15           U   7

MPEC 2013 - E57

Key to Orbital elements

The 62 - 140 metre wide asteroid 2013 ER41 will make a close pass (25.8 lunar distances, 0.0662 AU), travelling at 13.19 km/second, to the Earth-Moon system on the 13th March, 2013 @ 18:31 UT ±00:05. 

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