Wiktionary
alt. 1 (context astronomy English) Any secondary body in the Solar system that is geologically differentiated or in hydrostatic equilibrium and thus has a planet-like geology: a planet, dwarf planet, or the larger moons and asteroids. 2 (context astronomy English) Any substantial body in orbit around the Sun or other star: a planet, minor planet, or comet. 3 (context astronomy English) Any substantial body associated with the development of planets: a protoplanet, planetesimal. n. 1 (context astronomy English) Any secondary body in the Solar system that is geologically differentiated or in hydrostatic equilibrium and thus has a planet-like geology: a planet, dwarf planet, or the larger moons and asteroids. 2 (context astronomy English) Any substantial body in orbit around the Sun or other star: a planet, minor planet, or comet. 3 (context astronomy English) Any substantial body associated with the development of planets: a protoplanet, planetesimal.
Usage examples of "planetary object".
If it's not a planetary object, we can use our exhaust to burn a path through it.
But this one began with an eclipse of the moon and with four glisteningly new astronomical photographs, each showing starfields and a planetary object.
Here he was, then, buried in a planetary object of dead organic matter.