Wed 20 Feb 2013

Asteroid 797 Montana Closest To Earth (1.531 AU)

Asteroid 797 Montana Closest Approach To Earth (1.531 AU)

Closest Approach to Earth - This happens as a heavenly body has an orbit that somewhere is closest to Earth. Most Astroids and Comets have an elliptical orbit in relation to a star (ie the Sun) or planet and thus will vary in distance to Earth.

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