Concept information
Preferred term
Apollo group
Definition
- A member of a class of near-Earth asteroids (NEAs) that have orbital semi-major axes greater than that of the Earth (> 1 astronomical unit) but perihelion distances less than the Earth's aphelion distance (less than 1.017 AU); thus, they cross the Earth's orbit when near the perihelia of their orbits. They are named for the prototype Apollo. (en)
Broader concept
- Near-Earth objects (en)
Entry terms
- Apollo asteroids (en)
Editorial note
URI
http://astrothesaurus.org/uat/58
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