* Astronomy

Orbital elements:
2012 QZ17                                                Earth MOID = 0.0990 AU
Epoch 2012 Sept. 30.0 TT = JDT 2456200.5                MPC
M   7.01776              (2000.0)            P               Q
n   0.26576597     Peri.  191.45219     +0.95084808     +0.30904997
a   2.3959062      Node   150.52325     -0.28090226     +0.88721150
e   0.5378131      Incl.    2.25856     -0.13031446     +0.34255492
P   3.71           H   25.4           G   0.15           U   8

MPEC 2012 - Q63

The 22 - 50 metre wide asteroid 2012 QZ17 will make a close pass (38.9 lunar distances, 0.1001 AU), travelling at 5.88 km/second, to the Earth-Moon system on the 1st September, 2012 @ 07:06 UT ±1 day 11:52. 

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