The 210 - 470 metre wide asteroid 1999 SG10 will make a close pass (70.2 lunar distances, 0.1805 AU), travelling at 17.63 km/second, to the Earth-Moon system on the 17th October, 2013 @ 12:26 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).
