* Astronomy

Orbital elements:
2011 SQ25                                                Earth MOID = 0.0834 AU
Epoch 2011 Aug. 27.0 TT = JDT 2455800.5                 MPC
M 346.98763              (2000.0)            P               Q
n   0.56934335     Peri.  349.84889     +0.99944966     +0.03018647
a   1.4417387      Node     8.45766     -0.01985684     +0.87655212
e   0.2468805      Incl.    5.36571     -0.02657241     +0.48035940
P   1.73           H   23.4           G   0.15           U   8

MPEC 2011 - S46

The 55 - 120 metre wide asteroid 2011 SQ25 made a close pass (38.2 lunar distances, 0.0982 AU), travelling at 3.72 km/second, to the Earth-Moon system on the 20th September, 2011 @ 20:12 UT ±1 day 09:13.

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