Planetary body
A planetary body was any secondary or significantly substantial planet-like object that was in orbit of a star, which included dwarf planets, moons, asteroids, protoplanets, planetesimals, or comets.

After analyzing the doomsday machine encountered by the  and  in 2267, Spock determined that it was self-sustaining as long as there were planetary bodies for it to feed on. ()

After locating the  inside asteroid Gamma-601, Admiral Erik Pressman ordered the  to enter the chasm. When Captain Jean-Luc Picard questioned the order,  Data explained that "It is theoretically possible, sir, but I am unaware of any prior situations where a starship was taken so deeply inside a planetary body. There may be unforeseen difficulties." ()

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Astronomical phenomena