Planetary Standard

The Planetary Standard is a list on the definitions of planets and their types by the IAU.

Dwarf Planet

 * 1) It must have enough gravity to be a round shape - The smallest object if independent in our Solar System that could be considered a Dwarf Planet would be Mimas

Mini-terrestrial Planet

 * 1) It must have cleared its neighbourhood.
 * 2) It must have a surface to stand on.
 * 3) It must be smaller than 0.1 Earth Masses.

Standard Terrestrial Planet

 * 1) It must have a liquid or gas core at the centre of itself.
 * 2) It must be 0.1 Earth Masses to 2 Earth Masses.
 * 3) It must have an atmosphere above 1Pa.
 * 4) It must have a surface to stand on.

Super-terrestrial Planet

 * 1) It must be between 2 and 8 Earth Masses.
 * 2) It must have a liquid or gas core at the centre of itself.
 * 3) It must have a surface to stand on.

Hyper-terrestrial Planet

 * 1) It must be over 8 Earth Masses.
 * 2) It must have a liquid or gas core at the centre of itself.
 * 3) It must have a surface to stand on.

Ocean Planet

 * 1) It must have no surface that can be stood on (Ice Caps aren't counted as surfaces).
 * 2) It must be a liquid covered planet.

Ice Giant

 * 1) It must have its internal structure to be made of more liquid than gas.
 * 2) It's gas envelope must be dense enough to sink through, and not fall through.

Gas Gaint

 * 1) It must be more Gas than Liquid.

Brown Dwarf

 * 1) It must fuse Deutrium or have an exausted Deutrium supply.

Chthonan Planet

 * 1) It must have been a Gas Gaint in the past that had its gas layers blown away.