Planetary Classification: Difference between revisions
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==Classifications== | ==Classifications== | ||
===Class A=== | |||
===Class B=== | ===Class B=== | ||
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===Class D=== | ===Class D=== | ||
* Terrestrial | * Terrestrial | ||
* Airless body, often an asteroid or moon | * Airless body, often an asteroid or moon | ||
===Class E=== | |||
===Class F=== | |||
===Class G=== | |||
===Class H=== | |||
* Terrestrial | |||
* Arid world | |||
* Atmosphere often saturated with heavy gasses or metallic vapors | |||
* Little to no surface water | |||
* Generally uninhabitable to humanoid life | |||
===Class I=== | |||
===Class J=== | ===Class J=== | ||
* Gas giant | * Gas giant | ||
===Class K=== | |||
* Terrestrial | |||
* Adaptable world | |||
* Generally thin atmopshere | |||
* Little to no surface water | |||
* Surface conditions suitable for life with aid of pressure domes or life support technology (TOS: "I, Mudd") | |||
** Often pre-terraforming state | |||
===Class L=== | ===Class L=== | ||
* Terrestrial | * Terrestrial | ||
* Barely habitable or habitable with minimal technological aid | * Barely habitable or habitable with minimal technological aid | ||
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===Class M=== | ===Class M=== | ||
* Terrestrial | * Terrestrial | ||
* Previously known as [[Vulcan (planet)|Minshara]]-class by [[Vulcan Science Directorate]], [[Earth]]-type by [[UESPA]] (ENT, TOS) | * Previously known as [[Vulcan (planet)|Minshara]]-class by [[Vulcan Science Directorate]], [[Earth]]-type by [[UESPA]] (ENT, TOS) | ||
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===Class N=== | ===Class N=== | ||
* Terrestrial | |||
* Thick atmosphere, often saturated with sulfur compounds | |||
* High surface temperature due to atmospheric greenhouse effect | |||
* Generally uninhabitable for humanoid life | |||
===Class O=== | |||
===Class P=== | ===Class P=== | ||
===Class Q=== | |||
===Class R=== | |||
===Class S=== | |||
===Class T=== | |||
===Class Y=== | |||
* Terrestrial | |||
* Colloquially known as "demon"-class (VOY: "Demon") | |||
* Extremely high surface temperatures | |||
* Corrosive and/or toxic atmosphere | |||
* [[Thermionic radiation|Thermionic]] discharges from surface-level metallic hydrogen deposits common (VOY: "Demon") | |||
* Planetary conditions can lead to vessel hazards even at standard orbital altitude (VOY: "Demon") | |||
===Notes=== | |||
* ''Star Charts classifications flawed w.r.t. giant planets'' | |||
** ''Radii are physically impossible'' | |||
** ''No distinction between gas giants and ice giants despite physically distinct characteristics'' | |||
* ''Possibly replace gas giant classification schema with something like Sudarsky schema + ice giant? Compare to canon class J & class T'' | |||
(''Star Charts'' unless otherwise referenced) | (''Star Charts'' unless otherwise referenced) | ||
[[Category:Astronomy]] | [[Category:Astronomy]] | ||
Revision as of 10:55, 10 January 2018
Facts
- Planetary classification system established by mid-23rd century
- Descends from similar classification systems established by Vulcan Science Directorate, UESPA (ENT, TOS)
Classifications
Class A
Class B
Class C
Class D
- Terrestrial
- Airless body, often an asteroid or moon
Class E
Class F
Class G
Class H
- Terrestrial
- Arid world
- Atmosphere often saturated with heavy gasses or metallic vapors
- Little to no surface water
- Generally uninhabitable to humanoid life
Class I
Class J
- Gas giant
Class K
- Terrestrial
- Adaptable world
- Generally thin atmopshere
- Little to no surface water
- Surface conditions suitable for life with aid of pressure domes or life support technology (TOS: "I, Mudd")
- Often pre-terraforming state
Class L
- Terrestrial
- Barely habitable or habitable with minimal technological aid
- Often pre-terraforming state
Class M
- Terrestrial
- Previously known as Minshara-class by Vulcan Science Directorate, Earth-type by UESPA (ENT, TOS)
- Significant surface water, below 80% coverage
- Atmosphere consisting of nitrogen, oxygen, trace elements
- Habitable by humanoid life
- Subdivided into type 1-4, indicating most to least suitable for humanoid life (TNG: "The Bonding")
Class N
- Terrestrial
- Thick atmosphere, often saturated with sulfur compounds
- High surface temperature due to atmospheric greenhouse effect
- Generally uninhabitable for humanoid life
Class O
Class P
Class Q
Class R
Class S
Class T
Class Y
- Terrestrial
- Colloquially known as "demon"-class (VOY: "Demon")
- Extremely high surface temperatures
- Corrosive and/or toxic atmosphere
- Thermionic discharges from surface-level metallic hydrogen deposits common (VOY: "Demon")
- Planetary conditions can lead to vessel hazards even at standard orbital altitude (VOY: "Demon")
Notes
- Star Charts classifications flawed w.r.t. giant planets
- Radii are physically impossible
- No distinction between gas giants and ice giants despite physically distinct characteristics
- Possibly replace gas giant classification schema with something like Sudarsky schema + ice giant? Compare to canon class J & class T
(Star Charts unless otherwise referenced)