* Astronomy

Orbital elements:
2012 QY17                                                Earth MOID = 0.0506 AU
Epoch 2012 Sept. 30.0 TT = JDT 2456200.5                MPC
M  18.52974              (2000.0)            P               Q
n   0.52929338     Peri.  180.84471     +0.89127638     +0.42840034
a   1.5135789      Node   152.23477     -0.41414813     +0.90254031
e   0.2989306      Incl.   18.60936     -0.18468282     +0.04352177
P   1.86           H   25.6           G   0.15           U   7

MPEC 2012 - Q62

The 20 - 46 metre wide asteroid 2012 QY17 made a close pass (19.6 lunar distances, 0.0504 AU), travelling at 10.67 km/second, to the Earth-Moon system on the 24th August, 2012 @ 22:59 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).