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| physical object > natural object > celestial body > asteroid > Earth-crossing asteroid > Apollo asteroid > Apollo | 
| Apollo comparison table | |||||||
| Subject | is a kind of | is an instance of | has orbital period | has inclination | has semi-major axi | has definition | has eccentricity | 
|---|---|---|---|---|---|---|---|
| Apollo asteroid | Earth-crossing asteroid | One of a small group of asteroids whose orbits intersect that of Earth. They are named for the prototype, Apollo. | |||||
| Apollo | Apollo asteroid | P = 622d | i = 6°.4 | a = 1.486 AU | Prototype of a small group of asteroids whose orbits intersect that of Earth. | e = 0.57 | 
 Up: Apollo asteroid