* Astronomy

Orbital elements:
2012 TN20                                                Earth MOID = 0.1368 AU
Epoch 2012 Sept. 30.0 TT = JDT 2456200.5                MPC
M 287.14199              (2000.0)            P               Q
n   0.76497854     Peri.  138.82824     -0.61497770     -0.78758768
a   1.1840496      Node   348.93245     +0.66010916     -0.48724856
e   0.3874555      Incl.   11.67122     +0.43134478     -0.37721941
P   1.29           H   22.3           G   0.15           U   8

MPEC 2012 - T28

The 96 - 210 metre wide asteroid 2012 TN20 will make a close pass (62.8 lunar distances, 0.1615 AU), travelling at 10.15 km/second, to the Earth-Moon system on the 27th October, 2012 @ 04:44 UT ±00:52. 

See more

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