Planetary Classification
Introduction
Modifying Canon for the Modern World
Planetary Classifications
Class C (Chthonian)
A Class E Planet
Class D (Dead)
Class E (Elastic/Exothermic)
Class F (Frozen)
Class G (Geoinactive)
Class H (Harsh)
Class I (Ice Giant/Neptunian)
Class J (Jovian/Jupiter Gas Giant)
Class K (K'vara)
Class L (Limited)
Class M (Minshara/Habitable)
Gelidic Subtype
Gelidic Class M Worlds are locked into persistently cooler temperatures, creating expanded continental and oceanic glaciation. While not yet a Class P "Snowball Earth," a Gelidic world is near-permanently in an "Ice Age."
Gracilic Subtype =
Gracilic Class M worlds have thin but breathable atmospheres. They may have close-hugging atmospheres with sea-level like conditions that rapidly become unhabitable at higher terrains, or else sea-level atmosphere of the planet is similar to 3,000 meters above sea level on Earth.
Lacustric Subtype
Lacusrtic Class M worlds have most of their surface water locked up in rivers, lakes, and inland seas. Such worlds have very few expansive oceans.
Lutosic Subtype
Crassic Class M worlds have thick atmospheres that usually obscure much of the planet's surface and have increased air pressure. Often these worlds have dense and humid atmospheres. Habitability to a Human comfort level can likely be attained at a higher elevation.
Paludal Subtype
Paludal Class M worlds are noted for having a high percentage of low-lying, near or at sea-level terrain which is often marshy or swampy.
Pelagic Subtype
Pelagic Class M worlds are approaching Class O status and have surfaces dominated by oceans to a degree that 85% of the surface is under water.
Suptic/Cenotic Subtype
These unusual worlds possess Class M environments below the planet's surface- usually in extensive cavern systems. A great deal of the planet's water is subterranean but accessible in nature. The surface of such a world may or may not be condusive to life, but has a breathable atmosphere.
Tundric Subtype
Tundric Class M worlds are not Class P and are not Gelidic, but are prone to or in the process of entering an Ice Age.