Planetary-mass object
Planetary-mass object, planetary body or planemo is the name used to define objects having mass to be round, but not enough to host nuclear fusion like stars. They orbit around another astronomical object. It includes dwarf planets, moons and other obiects.
Origin
[change | change source]The term was created by the IAU to define object whether they are planets or not. According to the geophysical definition, a planet is an astronomical object that has mass to become round, but insufficient to host nuclear fusion like stars.
In the solar system
[change | change source]If we apply this to our Solar System, they will be planetary bodies: