Planetary list

Minor planets, moons and comets

Less than 0.00001 Earth masses = asteroidan

0.00001 to 0.1 Earth masses = mercurian

Terrestrial planets (rocky composition)

0.1-0.5 Earth masses = subterran

0.5-2 Earth masses = terran (Earths)

2-10 Earth masses = superterran (super-Earths)

Gas giant planets

10-50 Earth masses = Neptunian (Neptunes)

50-5000 Earth masses = Jovian (Jupiters)

Additional resources
 * Class D (planetoid or moon with little to no atmosphere)
 * Class H (generally uninhabitable)
 * Class J (gas giant)
 * Class K (habitable, as long as pressure domes are used)
 * Class L (marginally habitable, with vegetation but no animal life)
 * Class M (terrestrial)
 * Class N (sulfuric)
 * Class R (a rogue planet, not as habitable as a terrestrial planet)
 * Class T (gas giant)
 * Class Y (toxic atmosphere, high temperatures)