* Astronomy

The 190 - 430 metre wide asteroid 2007 RF2 will make a close pass (76.3-lunar distances, 0.1961-AU), travelling at 25.62-km/second, to the Earth-Moon system on the 8th April, 2010.

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