* Astronomy

Orbital elements:
2012 PZ17                                                Earth MOID = 0.0067 AU
Epoch 2012 Sept. 30.0 TT = JDT 2456200.5                MPC
M 227.23472              (2000.0)            P               Q
n   1.16597831     Peri.    7.30011     -0.84099792     -0.53761366
a   0.8940100      Node   139.98429     +0.49149301     -0.80611020
e   0.1425437      Incl.    5.42392     +0.22617939     -0.24730125
P   0.85           H   26.8           G   0.15           U   5

MPEC 2012 - P38

The 12 - 26 metre wide asteroid 2012 PZ17 made a close pass (3.0 lunar distances, 0.0077 AU), travelling at 3.56 km/second, to the Earth-Moon system on the 12th August, 2012 @ 22:47 UT ±00:01. 

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