Planetary Classifications

Class (Vulcan Name)	Description	Surface	Atmosphere
Class A (Ayhan) (ex: Gothos)	Geothermal	Partially molten	Hydrogen compounds
Class B (Balev) (ex: Mercury)	Geomorteus	Partially molten, high temperature	Extremely tenuous
Class C (Chu’lak) (ex: Pluto)	Geoinactive	Low temperature	Frozen
Class D (Denak) (ex: Luna)	Asteroid/Moon	Barren and cratered	None or very tenuous
Class E (Evoras) (ex: Excalbia)	Geoplastic	Molten, high temperature	Hydrogen compounds and reactive gases
Class F (Falor) (ex: Janus IV)	Geometallic	Volcanic	Hydrogen compounds
Class G (Galsh) (ex: Delta Vega)	Geocrystalline	Crystallizing	Carbon dioxide, some toxic gases
Class H (Harauk) (ex: Vulcan)	Desert	Hot and arid, little or no water	May contain heavy gases and metal vapors
Class I (Ivek)	Gas Supergiant	Tenuous, comprised of gaseous hydrogen and hydrogen compounds, radiates heat	Variable pressure and composition, may contain water vapor
Class J (Jasif-ir) (ex: Jupiter)	Gas Giant	Tenuous, comprised of gaseous hydrogen and hydrogen compounds, radiates some heat	Variable pressure and composition
Class K (Kesh) (ex: Mars)	Adaptable	Barren, little or no water	Thin, mostly carbon dioxide
Class L (L’Nel)	Marginal	Rocky and barren, little water	Oxygen/Argon, high concentration of carbon dioxide
Class M (Minshara) (ex: Earth)	Terrestrial	Water abundant	Nitrogen, Oxygen and trace elements
Class N (Nesheh) (ex: Venus)	Reducing	High temperature	Extremely dense, carbon dioxide and sulfides
Class O (Ob'taree)	Pelagic	80%+ water	Nitrogen, Oxygen and trace elements
Class P (Paradaik) (ex: Breen)	Glaciated	80%+ water ice	Nitrogen, Oxygen and trace elements
Class Q (Qju'nirr) (ex: Genesis Planet)	Variable	Various	Tenuous to dense
Class R (Ri'a'gra)	Rogue	Maybe temperate due to geothermal venting	Primarily volcanic outgassing
Class S-T (Suk, Taurik)	Ultragiant	Tenuous, comprised of gaseous hydrogen and hydrogen compounds, radiates considerable heat	Variable pressure and composition, may contain water vapor
Class Y (Yehenik) (ex: Tholia)	Demon	500°K+	Turbulent, saturated with toxic chemicals and therionic radiation