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Planet Classes
From ATS Wiki
Planets are classified into groups, where each group is given a letter of the alphabet. Some known factors considered when classifying planets are: age, size, composition and atmospheric content.
A : Geo-Thermal
Age: 0 to 2 billion years Diameter: 1000 to 10000 km Location: Ecosphere / Cold Zone Surface: Partially molten Atmosphere: Primarily Hydrogen compounds Evolution: Cools to become Class C Life-forms: None Example: Gothos
B : Geo-Morteus
Age: 0 to 10 billion years Diameter: 1000 to 10000 km Location: Hot Zone Surface: Partially molten, high surface temperature Atmosphere: Extremely tenuous, few chemically active gases Life-forms: None Example: Mercury
C : Geo-Inactive
Age: 2 to 10 billion years Diameter: 1000 to 10000 km Location: Ecosphere / Cold Zone Surface: Low surface temperature Atmosphere: Frozen Life-forms: None Example: Pluto, Psi 2000
D : Asteroid / Moon
Age: 2 to 10 billion years Diameter: 100 to 1000 km Location: Hot Zone / Ecosphere / Cold Zone; found primarily in orbit of larger planets or in asteroid fields Surface: Barren and cratered Atmosphere: None or very tenuous Life-forms: None Example: Moon (Sol IIIa), Lunar V (Bajor VIIe)
E : Geo-Plastic
Age: 0 to 2 billion years Diameter: 10000 to 15000 km Location: Ecosphere Surface: Molten, high surface temperature Atmosphere: Hydrogen compounds and reactive gases Evolution: Cools to become Class F Life-forms: Carbon-cycle Example: Excalbia
F : Geo-Metallic
Age: 1 to 3 billion years Diameter: 10000 to 15000 km Location: Ecosphere Surface: Volcanic eruptions due to molten core Atmosphere: Hydrogen compounds Evolution: Cools to become Class G Life-forms: Silicon-based (Horta) Example: Janus VI
G : Geo-Crystalline
Age: 3 to 4 billion years Diameter: 10000 to 15000 km Location: Ecosphere Surface: Still crystallizing Atmosphere: Carbon dioxide, some toxic gases Evolution: Cools to become class K, L, M, N, O or P Life-forms: Primitive single-celled organisms Example: Delta-Vega
H : Desert
Age: 4 to 10 billion years Diameter: 8000 to 15000 km Location: Hot Zone / Ecosphere / Cold Zone Surface: Hot and arid, little or no surface water Atmosphere: May contain heavy gases and metal vapours Life-forms: Drought- and radiation-resistant plants, animal life Example: Rigel XII, Tau Cygna V
I : Gas Supergiant
Age: 2 to 10 billion years Diameter: 140000 to 10 million km Location: Cold Zone Surface: Tenuous, comprised of gaseous hydrogen and hydrogen compounds; radiates heat Atmosphere: Zones vary in temperature, pressure and composition; water vapour may be present Life-forms: Unknown Example: Q'taHl
J : Gas Giant
Age: 2 to 10 billion years Diameter: 50000 to 140000 km Location: Cold Zone Surface: Tenuous, comprised of gaseous hydrogen and hydrogen compounds; radiates some heat Atmosphere: Zones vary in temperature, pressure and composition Life-forms: None Example: Jupiter, Saturn
K : Adaptable
Age: 4 to 10 billion years Diameter: 5000 to 10000 km Location: Ecosphere Surface: Barren, little or no surface water Atmosphere: Thin, mostly carbon dioxide Life-forms: Primitive single-celled organisms; adaptable for humanoid colonization through the use of pressure domes Example: Mars
L : Marginal
Age: 0 to 10 billion years Diameter: 10000 to 15000 km Location: Ecosphere Surface: Rocky and barren, little surface water Atmosphere: Oxygen/argon, high concentration of carbon dioxide Life-forms: Limited to plant life; suitable for humanoid colonisation Example: Indri VIII
M: Terrestrial
Age: 3 to 10 billion years Diameter: 10000 to 15000 km Location: Ecosphere Surface: Surface water abundant (less than 80% of surface) Atmosphere: Nitrogen, oxygen, trace elements Life-forms: Extensive vegetation, animal life, humanoids Example: Earth, Vulcan, Cardassia Prime
N : Reducing
Age: 3 to 10 billion years Diameter: 10000 to 15000 km Location: Ecosphere Surface: High surface temperature due to greenhouse effect; water present only as vapour Atmosphere: Extremely dense, carbon dioxide and sulphides Life-forms: Unknown Example: Venus
O : Pelagic
Age: 3 to 10 billion years Diameter: 10000 to 15000 km Location: Ecosphere Surface: Liquid water covers 80% or more of surface area Atmosphere: Nitrogen, oxygen, trace elements Life-forms: Aquatic vegetation, animal life, humanoids Example: Argo
P : Glaciated
Age: 3 to 10 billion years Diameter: 10000 to 15000 km Location: Ecosphere Surface: Water ice covers 80% or more of surface area Atmosphere: Nitrogen, oxygen, trace elements Life-forms: Hardy vegetation, animal life, humanoids Example: Exo III, Breen
Q : Variable
Age: 2 to 10 billion years Diameter: 4000 to 15000 km Location: Hot Zone / Ecosphere / Cold Zone Surface: Ranges from molten to water and/or carbon dioxide ice, due to eccentric orbit or variable output of star Atmosphere: Ranges from tenuous to very dense Example: Genesis Planet
R : Rogue
Age: 2 to 10 billion years Diameter: 4000 to 15000 km Location: Interstellar space, cometary halos Surface: May be temperate due to geothermal venting Atmosphere: Primarily volcanic outgassing Life-forms: Non-photosynthetic plants, animal life Example: Dakala
S/T : Near-Star
Age: 2 to 10 billion years Diameter: 10 to 50 million km (Class S); 50 to 120 million km (Class T) Location: Cold Zone Surface: Tenuous, comprised of gaseous hydrogen and hydrogen compounds; radiates considerable heat Atmosphere: Zones vary in temperature, pressure and composition; water vapour may be present Life-forms: Unknown
Y : Demon
Age: 2 to 10 billion years Diameter: 10000 to 15000 km Location: Hot Zone / Ecosphere / Cold Zone Surface: Temperatures can exceed 500K Atmosphere: Turbulent, saturated with toxic chemicals and thermionic radiation Life-forms: Mimetic (Delta Qaudrant)
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