* Astronomy

Orbital elements:
2012 AY                                                  Earth MOID = 0.0910 AU
Epoch 2012 Mar. 14.0 TT = JDT 2456000.5                 MPC
M 351.58890              (2000.0)            P               Q
n   0.72164931     Peri.  261.26080     -0.90772324     +0.26663144
a   1.2309826      Node   293.66903     -0.07377910     -0.86151507
e   0.2690662      Incl.   20.71428     -0.41303166     -0.43208733
P   1.37           H   22.1           G   0.15           U   8

MPEC 2012 - A21

The 100 - 220 metre wide asteroid 2012 AY will make a close pass (35.5 lunar distances, 0.0912 AU), travelling at 12.78 km/second, to the Earth-Moon system on the 22nd January, 2012 @ 15:31 UT ±03:08.

See more

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