Planetary Classes (FASA)

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Planetary Classes
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Classes

Class A

Jupiter, a Class A world (TNG 101-102)

Jupiter, a Class A world (TNG 101-102)

Class A planets were gas giants with a tenuous surface, which may not have been present at all. The atmosphere was reducing, and composed of elements such as methane. Class A planets radiated their own heat, and could also be considered "failed" stars. An example of a Class A planet is Jupiter.[1]

Class B

Class B planets were gas giants with a tenuous surface, which may not have been present at all. The atmosphere was reducing. Class B planets did not radiate their own heat. An example of a Class B planet is Neptune.[1]

Class C

Class C planets had an iron/silicate surface. The atmosphere was reducing and dense. Class C planets also had high surface temperatures. An example of a Class C planet is Venus.[1]

Class D

Class D planets had a nickel-iron/silicate surface. The atmosphere was tenuous, if one existed at all. Class D planets were typically moons or large meteroids.[2] An example of a Class D planet is Ceres.[1]

Class E

Class E planets had a silicate surface with some metals. The atmosphere was reducing or oxidizing. Class E planets had large, molten cores. An example of a Class E planet is Janus VI.[1]

Class F

Delta Vega, a Class F world (TOS 01)

Delta Vega, a Class F world (TOS 01)

Class F planets had a silicate surface with some metals. The atmosphere was oxidizing. Class F planets were very young, typically less than 109 years. An example of a Class F planet is Delta Vega.[1]

Class G

Rigel XII, a Class G world (TOS 03)

Rigel XII, a Class G world (TOS 03)

Class G planets had a silicate surface. The atmosphere was thin and oxidizing. Class G planets were desert worlds. An example of a Class G planet is Rigel XII.[1]

Class H

Gothos, a Class H world (TOS 18)

Gothos, a Class H world (TOS 18)

Class H planets had a silicate surface. The atmosphere was variable. Class H planets were geologically active. An example of a Class H planet is Gothos.[1]

Class I

Class I planets had a metallic/silicate surface. The atmosphere was fluid and very dense. Class I planets were small and young. An example of a Class I planet is Excalbia.[1]

Class J

Earth's moon, a Class J world (STSC)

Earth's moon, a Class J world (STSC)

Class J planets had a silicate surface. The atmosphere was very tenuous, with noble gases. Class J planets were often moons. An example of a Class J planet is Luna.[1]

Class K

Mars, a Class K world (STSC)

Mars, a Class K world (STSC)

Class K planets had a silicate surface. The atmosphere was tenuous, with some water. Class K planets were adaptable with the use of pressure domes. An example of a Class K planet is Mars.[1]

Class L

Psi 2000, a Class L world (TOS 06)

Psi 2000, a Class L world (TOS 06)

Class L planets had a silicate/water surface. The atmosphere was oxidizing. Class L planets were geologically inactive. An example of a Class L planet is Psi 2000.[1]

Class M

Earth, a Class M world (TOS 21)

Earth, a Class M world (TOS 21)

Class M planets had a silicate/water surface. The atmosphere was oxidizing,[1] and consisted largely of nitrogen and oxygen.[3] Class M planets were geologically active. An example of a Class M planet is Earth.[1]

Class N

Class N planets had a surface covered entirely in water. The atmosphere was oxidizing. Class N planets were pelagic planets. An example of a Class N planet is Argo.[1]

Notes and References