: They must have sufficient gravity to achieve a nearly spherical shape.
The Nature and Dynamics of Minor Planets in the Solar System minor planet
: Crucially, minor planets have not cleared their orbital path of other debris. : They must have sufficient gravity to achieve
Minor planets are found in diverse regions of the solar system, reflecting various evolutionary paths: : Objects sharing an orbit with a planet
: Located between the orbits of Mars and Jupiter, this region contains the highest concentration of rocky asteroids.
: Objects sharing an orbit with a planet (Trojans) or orbiting between the giant planets (Centaurs). 3. Scientific Significance
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).