* Astronomy

Orbital elements:
2013 BT15                                                Earth MOID = 0.0126 AU
Epoch 2012 Sept. 30.0 TT = JDT 2456200.5                MPC
M 305.73801              (2000.0)            P               Q
n   0.43493082     Peri.  198.53720     -0.70541188     -0.70240161
a   1.7252655      Node   296.45569     +0.66299193     -0.60646761
e   0.4299500      Incl.    6.09161     +0.25067067     -0.37259766
P   2.27           H   27.3           G   0.15           U   9

MPEC 2013 - B26

Key to Orbital elements

The 9 - 21 metre wide asteroid 2013 BT15 will make a close pass (4.6 lunar distances, 0.0117 AU), travelling at 6.97 km/second, to the Earth-Moon system on the 20th January, 2013 @ 23:49 UT ±00:03. 

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