The term "minor planet" is an astronomical classification encompassing all small solar system bodies that are not comets. As of early 2026, over 1.5 million minor planets have been identified. These bodies are distinguished from major planets based on three criteria established by the International Astronomical Union (IAU) : : They must orbit a star (the Sun).
: Bodies located beyond the orbit of Neptune, including Kuiper Belt objects. minor planet
The study of minor planets is essential for several reasons: FindPOTATOs: Minor Planet Observation Linking Software The term "minor planet" is an astronomical classification
: Located between the orbits of Mars and Jupiter, this region contains the highest concentration of rocky asteroids. minor planet
: Crucially, minor planets have not cleared their orbital path of other debris.