The Nature and Dynamics of Minor Planets in the Solar System
: Bodies located beyond the orbit of Neptune, including Kuiper Belt objects.
: Crucially, minor planets have not cleared their orbital path of other debris. minor planet
: They must have sufficient gravity to achieve a nearly spherical shape.
: Objects sharing an orbit with a planet (Trojans) or orbiting between the giant planets (Centaurs). 3. Scientific Significance The Nature and Dynamics of Minor Planets in
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).
Minor planets are found in diverse regions of the solar system, reflecting various evolutionary paths: : Objects sharing an orbit with a planet
A sub-category, , includes larger minor planets like Pluto , Ceres, Eris, Haumea, and Makemake, which meet the shape criteria but fail to clear their orbits. 2. Distribution and Populations