noun
small solar system body
Technical term in astronomy for objects orbiting the Sun that are not planets, dwarf planets, or satellites. Asteroids, comets, and trans-Neptunian objects are also used.
太陽系小天体には小惑星や彗星が含まれる。
Small solar system bodies include asteroids and comets.
Compound of 太陽系 (solar system) + 小 (small) + 天体 (celestial body). A modern technical term adopted in astronomy.