Groups Out To The Orbit of Mars
- The Amor asteroids, named after 1221 Amor are near-Earth asteroids that are not Earth-crossers, having a perihelion just outside the Earth's orbit.
- Mars-crosser asteroids have orbits that cross that of Mars, but do not necessarily closely approach the Earth's.
- Mars trojans follow or lead Mars on its orbit, at either of the two Lagrangian points 60° ahead (L4) or behind (L5). As of March 2008, four are known. The largest appears to be 5261 Eureka.
- Many of the Earth-, Venus-, and Mercury-crosser asteroids have aphelia greater than 1 AU.
Read more about this topic: List Of Minor-planet Groups
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