Planetary Classifications

CLASS A - GEO-THERMAL
	Age:	0-2 billion years
	Diameter:	1,000 - 10,000 km
	Location:	Hot Zone / Ecosphere / Cold Zone
	Surface:	Partially molten, very hot
	Atmosphere:	Primarily hydrogen compounds, carbon dioxide
	Evolution:	Cools to become Class-C
	Life-Forms:	None

CLASS B - GEO-MORTEUS
	Age:	0-10 billion years
	Diameter:	1,000 - 10,000 km
	Location:	Hot Zone
	Surface:	Partially molten, high surface temperature.
	Atmosphere:	Extremely tenuous, few chemically active gases.
	Evolution:	N/A
	Life-Forms:	None

CLASS C - GEO-INACTIVE
	Age:	2-10 billion years
	Diameter:	1,000 - 10,000 km
	Location:	Hot Zone / Ecosphere / Cold Zone
	Surface:	Low surface temperature, barren
	Atmosphere:	None
	Evolution:	N/A
	Life-Forms:	None

CLASS D - DWARF
	Age:	2-10 billion years
	Diameter:	100 - 4,000 km
	Location:	Hot Zone / Ecosphere / Cold Zone
	Surface:	Barren and cratered
	Atmosphere:	None or very tenuous
	Evolution:	N/A
	Life-Forms:	None

CLASS E - GEO-PLASTIC
	Age:	0-2 billion years
	Diameter:	10,000 - 30,000 km
	Location:	Ecosphere
	Surface:	Molten, high surface temperature
	Atmosphere:	Hydrogen compunds and reactive gases
	Evolution:	Cools to become Class-F
	Life-Forms:	Carbon-cycle

CLASS F - GEO-METALLIC
	Age:	1-3 billion years
	Diameter:	10,000 - 30,000 km
	Location:	Ecosphere
	Surface:	Barren with volcanic eruptions due to molten core
	Atmosphere:	Hydrogen compounds, Carbone Dioxide, Ammonia, Methane
	Evolution:	Cools to become Class-G
	Life-Forms:	Silicon-based or bacteria

CLASS G - GEO-CRYSTALLINE
	Age:	3-4 billion years
	Diameter:	10,000 - 30,000 km
	Location:	Ecosphere
	Surface:	Rocky, mostly barren
	Atmosphere:	Carbon dioxide, oxygen, nitrogen, some toxic gases
	Evolution:	Cools to become Class-K, L, M, N, O, or P
	Life-Forms:	Primitive single-celled organisms and vegetation

CLASS H - DESERT
	Age:	4-10 billions years
	Diameter:	8,000 - 15,000 km
	Location:	Ecosphere
	Surface:	Hot and arid, little or no surface water, less than 20%
	Atmosphere:	oxygen, nitrogen, argon, various metals
	Evolution:	N/A
	Life-Forms:	Drought- and radiation-resistant plants, animal life

CLASS I - ICE GIANT
	Age:	2-10 billion years
	Diameter:	30,000 - 100,000 km
	Location:	Cold Zone
	Surface:	rock, ice, methane, ammonia
	Atmosphere:	hydrogen, helium
	Evolution:	N/A
	Life-Forms:	None

CLASS J - GAS GIANT
	Age:	2-10 billion years
	Diameter:	50,000 - 500,000 km
	Location:	Cold Zone
	Surface:	liquid metallic hydrogen
	Atmosphere:	Varies in temperature, pressure and composition, mostly hydrogen and helium
	Evolution:	N/A
	Life-Forms:	none

CLASS K - ADAPTABLE
	Age:	4-10 billion years
	Diameter:	5,000 - 10,000 km
	Location:	Ecosphere
	Surface:	Barren, little or no surface water
	Atmosphere:	Thin, mostly carbon dioxide
	Evolution:	N/A
	Life-Forms:	Primitive single-celled organisms; adaptable for humanoid colonization through the use of pressure domes

CLASS L - MARGINAL
	Age:	4-10 billion years
	Diameter:	15,000 - 30,000 km
	Location:	Ecosphere
	Surface:	Rocky, little surface water
	Atmosphere:	Oxygen/argon, either trace elements or high concentration of carbon dioxide
	Evolution:	N/A
	Life-Forms:	Limited to plant life; suitable for humanoid colonization

CLASS M - TERRESTRIAL (Minshara Class)
	Age:	4-10 billion years
	Diameter:	10,000 - 20,000 km
	Location:	Ecosphere
	Surface:	temperate climate, abundant surface water
	Atmosphere:	Nitrogen, oxygen, argon, trace elements
	Evolution:	N/A
	Life-Forms:	Extensive vegetation, animal life, humanoids

CLASS N - REDUCING
	Age:	3-10 billion years
	Diameter:	10,000 - 15,000 km
	Location:	Ecosphere
	Surface:	Barren with high surface temperature due to greenhouse effect; water exists only as vapor
	Atmosphere:	Extremely dense, carbon dioxide and sulfides
	Evolution:	N/A
	Life-Forms:	None

CLASS O - PELAGIC
	Age:	3-10 billion years
	Diameter:	10,000 - 15,000 km
	Location:	Ecosphere
	Surface:	Liquid water covers 80% or more of surface area
	Atmosphere:	Nitrogen, oxygen, argon, trace elements
	Evolution:	N/A
	Life-Forms:	Aquatic vegetation, cetacean animal life, humanoids

CLASS P - GLACIATED
	Age:	3-10 billion years
	Diameter:	8,000 - 15,000 km
	Location:	Ecosphere
	Surface:	Cold, ice covers 80% or more of surface area
	Atmosphere:	Nitrogen, oxygen, trace elements
	Evolution:	N/A
	Life-Forms:	Hardy vegetation, animal life, humanoids

CLASS Q - VARIABLE
	Age:	2-10 billion years
	Diameter:	4,000 - 15,000 km
	Location:	Hot Zone / Ecosphere / Cold Zone
	Surface:	Ranges from molten to water and/or carbon dioxide ice, surface makeup varies due to eccentric orbit or variable output of star
	Atmosphere:	Ranges from tenuous to very dense
	Evolution:	N/A
	Life-Forms:	Microbial, limited plant life

CLASS R - ROGUE
	Age:	2-10 billion years
	Diameter:	8,000 - 30,000 km
	Location:	Interstellar space, cometary halos
	Surface:	Varies
	Atmosphere:	Primarily volcanic outgassing
	Evolution:	N/A
	Life-Forms:	Non-photosynthetic plants, animal life

CLASS S/T - GAS SUPERGIANT
	Age:	2-10 billion years
	Diameter:	10,000,000-50,000,000 km (Class-S) 50,000,000-120,000,000 million km (Class-T)
	Location:	Cold Zone
	Surface:	liquid metallic
	Atmosphere:	hydrogen and helium
	Evolution:	N/A
	Life-Forms:	Unknown

CLASS X - CHTHONIAN
	Age:	2-10 billion years
	Diameter:	1,000 - 10,000 km
	Location:	Hot Zone
	Surface:	barren, extremely hot
	Atmosphere:	None
	Evolution:	N/A
	Life-Forms:	None

CLASS Y - DEMON
	Age:	2-10 billion years
	Diameter:	10,000 - 50,000 km
	Location:	Hot Zone / Ecosphere / Cold Zone
	Surface:	barren, EXTREMELY HOT
	Atmosphere:	Turbulent, saturated with toxic chemicals and extremely toxic thermionic radiation
	Evolution:	N/A
	Life-Forms:	Mimetic