Classification of Bodies in Star Systems

Primaries

Stars
		Blue	Blue-White	White	Yellow-White	Yellow	Orange	Red	Cool Red
Supergiant		O I	B I	A I	F I	G I	K I	M I	L I
Bright Giant		O II	B II	A II	F II	G II	K II	M II	L II ?
Giant		O III	B III	A III	F III	G III	K III	M III	L III ?
Subgiant		O IV	B IV	A IV	F IV	G IV	K IV	M IV	L IV ?
Main Sequence	Dwarf	O V	B V	A V	F V	G V	K V	M V	L V
Main Sequence	Subdwarf	O VI	B VI	A VI	F VI	G VI	K VI	M VI	L VI
Brown Dwarfs
	Macro Brown Dwarf (Litium Fusion)				Micro Brown Dwarf (Just Deuterium Fusion)
1 300—2 000 K	L dwarf
700—1 300 K	T dwarf
< 700 K	Y dwarf
Interstellar Planets
Planetars					Rogue Planets

Secondaries

Brown Dwarfs (Olympian Class)
Deuterium Burning		Post-Fusion
Pyrolympian		L (Thermolympian)			T (Mesolympian)			Y (Cryolympian)
Giant Planets
		Gas Giants (Hecatonchirean Class)			Ice Giants (Gigantean Class)			Helium Giants (Cyclopean Class)
Silicate Clouds		Ammohecatonchirean			Ammogigantean			Ammocyclopean
Sodium Haze		Halohecatonchirean			Halogigantean			Halocyclopean
Clarified		Aithrihecatonchirean			Aithrigigantean			Aithricyclopean
Water Clouds		Nephohecatonchirean			Nephogigantean			Nephocyclopean
Ammonia Clouds		Diohecatonchirean			Diogigantean			Diocyclopean
Methane Clouds		Cyanohecatonchirean			Cyanogigantean			Cyanocyclopean
Terrestrial Planets
		Mega (Heraclean Class)				Macro (Achillean Class)
Silicate Clouds		Ammoheraclean				Ammachillean
Sodium Haze		Haloheraclean				Halachillean
Clarified		Aithriheraclean				Aithrachillean
Water Clouds		Nephoheraclean				Nephachillean
Ammonia Clouds		Dioheraclean				Diachillean
Methane Clouds		Cyanoheraclean				Cyanachillean
		Moderate				Mini
		Metallic	Rocky	Sooty	Icy	Metallic	Rocky	Sooty	Icy
No Atmosphere						Hephaestan	Hermean	Phaëtonian
H₂/He							Theian
CH₄/NH₃/H₂O	No Liquids
	Water
	Ammonia
	Methanol
	Hydrocarbons
CH₄/NH₃	No Liquids
	Water
	Ammonia
	Methanol
	Hydrocarbons
CH₄/N₂	No Liquids
	Water
	Ammonia
	Methanol
	Hydrocarbons				Rhean
N₂	No Liquids
	Water
	Ammonia
	Methanol
	Hydrocarbons
CO₂/N₂/H₂O	No Liquids
	Water		Heran
	Ammonia
	Methanol
	Hydrocarbons
CO₂/N₂	No Liquids		Aphrodisial				Arean
	Water
	Ammonia
	Methanol
	Hydrocarbons
N₂/O₂	No Liquids		Tartarean
	Water		Gaian
	Ammonia
	Methanol
	Hydrocarbons
SO₂	No Liquids
	Water
	Ammonia
	Methanol
	Hydrocarbons
Planetoids
Metallic		Rocky			Sooty			Icy
		Hestian			Demetrian			Eridian
Asteroids
Metallic		Rocky			Sooty			Icy

Tertiaries

Tertiaries
		Companions								Moons								Satellites
		Mesoplanetary				Regular				Mesoplanetary				Regular				Mesoplanetary				Regular
		Metallic	Rocky	Sooty	Icy	Metallic	Rocky	Sooty	Icy	Metallic	Rocky	Sooty	Icy	Metallic	Rocky	Sooty	Icy	Metallic	Rocky	Sooty	Icy	Metallic	Rocky	Sooty	Icy
No Atmosphere							Ionian		Ganymedean						Selenean		Charonian						Themistian		Tritonian
H₂/He
CH₄/NH₃/H₂O	No Liquids
	Water
	Ammonia
	Methanol
	Hydrocarbons
CH₄/NH₃	No Liquids
	Water
	Ammonia
	Methanol
	Hydrocarbons
CH₄/N₂	No Liquids				Atlantean				Epimethean
	Water
	Ammonia
	Methanol
	Hydrocarbons				Promethean				Titanian				Iapetan
N₂	No Liquids
	Water
	Ammonia
	Methanol
	Hydrocarbons
CO₂/N₂/H₂O	No Liquids
	Water
	Ammonia
	Methanol
	Hydrocarbons
CO₂/N₂	No Liquids
	Water
	Ammonia
	Methanol
	Hydrocarbons
N₂/O₂	No Liquids
	Water
	Ammonia
	Methanol
	Hydrocarbons
SO₂	No Liquids
	Water
	Ammonia
	Methanol
	Hydrocarbons
		Irregular								Irregular								Irregular
Metallic
Rocky
Sooty																		Himalian
Icy		Protean																Phoebean

Special Types

Evaporating (asteroid = "comet", planetoid = "macrocomet", terrestrial planet = "megacomet", giant planet = "ultracomet"): Komete-
Evaporated (chthonic): Thanato-

Classification of Bodies in Star Systems

Primaries

Secondaries

Tertiaries

Special Types

Further Reading