Planetary Classification

Planetary Classifications

Class C (Chthonian)

A Class E Planet

Class M (Minshara/Habitable)

Furenic Subtype

Furenic worlds of the Class M type are noted as having large, long-lasting and particularly powerful storm and wind events. Their atmospheres tend to be turbulent.

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. More than 75% of the planet's land is low-lying.

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.

Vadumic Subtype

Vadumic Class M worlds have unusually shallow oceans, often less than a kilometer deep, and at least 25% of the ocean is under less than 100m of water.

Xeric Subtype

Xeric subtypes of Class M planets are arid for the standard and have less water than the standard. They are not yet defined as Class H.