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Orbital elements:
2013 FT16                                                Earth MOID = 0.0391 AU
Epoch 2013 Apr. 18.0 TT = JDT 2456400.5                 MPC
M   6.17922              (2000.0)            P               Q
n   0.47126917     Peri.  184.40607     -0.96278082     +0.26978096
a   1.6353976      Node    11.28636     -0.24533721     -0.84672332
e   0.3645810      Incl.    4.82788     -0.11341400     -0.45856063
P   2.09           H   26.3           G   0.15           U   7

MPEC 2013 - G05

Key to Orbital elements

The 15 - 33 metre wide asteroid 2013 FT16 made a close pass (15.7 lunar distances, 0.0403 AU), travelling at 5.21 km/second, to the Earth-Moon system on the 3rd April, 2013 @ 00:42 UT ±00:12. 

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