HOME > Guides & Information > Science Information > Planetary Classifications

Planetary Classifications

The following is a Planetary Classification Chart, listing the fourteen basic planet types to be found within stellar systems. It is important to note that in some cases the classification into which a planet falls depends upon many factors. For example, a gas giant may fall into classification A, B, or L depending upon its size and temperature. Likewise, the only factor seperating I and J is orbital situation. Planets are identified by the Star Name followed by a number denoting its orbital position. Moons are identified by their Planet's identity followed by a letter denoting their orbital position.

DESCRIPTION COMPOSITION ATMOSPHERE COMMENTS EXAMPLE
--------------------------------------------------------------------------

A Gas Supergiant Metallic Gaseous H2 Failed Star Sol V Hydrogen & Compounds [Jupiter]

B Gas Giant Liquid Methane Gaseous H2 Less Dense Sol VI & Hydrogen & Compounds Than Class A [Saturn]

C Reducing Iron/Silicate CO2 [Very Greenhouse Sol II Hot & Dense] Effect [Venus]

D Geo-plastic Magma Surface Rock Vapor Extremely Excalbia & Chlorine Young

E Geo-metallic Heavy Elements Ammonia Heavy Metal Janus VI & Silicates Rich

F Geo-crystalline Light Elements O2/N2 & Light Crystal Delta Vega & Silicates Trace Toxins Rich

G Desert Metals/ O2/N2 & Heavy Crystal Rigel XII Silicates Metal Vapor Rich [Hell]

H Geo-thermal Silicates Toxic Complex Forming A.Centauri V Hydrocarbons [Rhodes]

I Asteroid/Moon Metals/ 1-3: None Barren & Sol III-A Silicates 4-6: Faint Cratered [Luna]

J Geo-morteus Light Elements Tenuous Sun-baked Sol I & Silicates Halogens Inner World [Mercury]

K Sub-terrestrial Iron/Silicate Toxic Small, Dome- Sol IV Adaptable [Mars]

L Outer Gas Giant Silicates Layered Tectonically Sol X Frozen Gases Unstable [Persephone]

M Terrestrial Iron/ Oxygen/ Carbo/Oxy Sol III Silicates Nitrogen Life Cycle [Terra]

N Pelagic Iron/ Oxygen/ Class M But Delta Silicates Nitrogen 97%+ Water Pavonis I