planetary object

Definitions

1. 1

   Any secondary body in the Solar system that is geologically differentiated or in…

   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. 2

   Any substantial body in orbit around the Sun or other star

   Any substantial body in orbit around the Sun or other star: a planet, minor planet, or comet.

3. 3

   Any substantial body associated with the development of planets

   Any substantial body associated with the development of planets: a protoplanet, planetesimal.

The neighborhood