orbitalids
Orbitalids are a proposed class of small bodies in planetary systems distinguished by their orbital behavior rather than composition. In theoretical models, orbitalids may range from tens of meters to a few kilometers in diameter and occupy resonant or near-resonant orbits within or adjacent to a planet’s ring and satellite system. The concept helps explain how micro-objects interact with rings, moons, and the planet’s gravity to shape ring structures such as density waves and gaps.
Etymology and scope: The name combines orbital with the suffix -id, indicating a group defined by dynamic
Dynamics and properties: Orbitalids would be expected to be irregularly shaped and composed of icy or rocky
Observation and status: There are no confirmed detections of orbitalids. They are explored through numerical simulations
See also: Ring system; Orbital resonance; Shepherd moon; Ring gap.