CLASS A
	Type:	Gas Supergiant
	Size:	140,000km - 10,000,000km
	Description:	Usually found in a star's outer or "cold zone." They have high core temperatures causing them to radiate heat. Low stellar radiation and high planet gravity enables them to keep a tenuous surface comprised of gaseous hydrogen and hydrogen compounds.
	CLASS B
	Type:	Gas Giant
	Size:	50,000km - 140,000km
	Description:	Usually found in a star's outer or "cold zone." They have high core temperatures, but do not radiate much heat. Low stellar radiation and high planet gravity enables them to keep a tenuous surface comprised of gaseous hydrogen and hydrogen compounds.
	CLASS C
	Type:	Reducing
	Size:	10,000km - 15,000km
	Description:	Usually found in a star's "habitable zone." They have high surface temperatures due to the "greenhouse effect" caused by their dense atmospheres. The only water found is in vapor form.
	CLASS D
	Type:	Geo-Plastic
	Size:	10,000km - 15,000km
	Description:	Usually have a molten surface because they have been recently formed. The atmosphere contains many hydrogen compounds and reactive gases. Class D planets eventually cool, becoming Class E.
	CLASS E
	Type:	Geo-Metallic
	Size:	10,000km - 15,000km
	Description:	Usually found in a star's "habitable zone." Their atmospheres still contain hydrogen compounds. They will cool further eventually becoming Class F.
	CLASS F
	Type:	Geo-Crystaline
	Size:	10,000km - 15,000km
	Description:	Usually found in a star's "habitable zone." They have surfaces that are still crystalizing. Their atmospheres still contain some toxic gases. They will cool eventually becoming Class C, M or N.
	CLASS G
	Type:	Desert
	Size:	8,000km - 15,000km
	Description:	Can be found in any of a star's zones. Their surfaces are usually hot and their atmospheres may contain heavy gases and metal vapors.
	CLASS H
	Type:	Geo-Thermal
	Size:	1,000km - 10,000km
	Description:	Usually found in a star's "habitable zone" or "cold zone." They have partially molten surfaces and atmospheres that contain many hydrogen compounds. They cool becoming Class L.
	CLASS I
	Type:	Asteroid
	Size:	100km - 1,000km
	Description:	Planetary bodies of this class can be found in any of a star's zones. They are usually found in orbit of larger planets or in asteriod fields. They have no atmospheres. Their surfaces are barren and cratered.
	CLASS J
	Type:	Geo-Morteus
	Size:	100km - 1,000km
	Description:	Usually found in a star's "hot zone." They have high surface temperatures due to the proximty to the star. Their atmospheres are extremely tenuous with few chemically active gases.
	CLASS K
	Type:	Adaptable
	Size:	5,000km - 10,000km
	Description:	Usually found in a star's "habitable zone." They are adaptable for humanoid colonization through the use of pressure domes and other life support devices. They have thin atmospheres. Small amounts of water are present.
	CLASS L
	Type:	Geo-Inactive
	Size:	1,000km - 10,000km
	Description:	Usually found in a star's "habitable zone" or "cold zone." Low solar radiation and minimal internal heat usually result in a frozen atmosphere.
	CLASS M
	Type:	Terrestrial
	Size:	10,000km - 15,000km
	Description:	Found in a star's "habitable zone." They have atmospheres that contain oxygen and nitrogen. Water and life-forms are typically abundant. If water covers more than 97% of the surface, then they are considered class N.
	CLASS N
	Type:	Pelagic
	Size:	10,000km - 15,000km
	Description:	Usually found in a star's "habitable zone." They have atmospheres that contain oxygen and nitrogen. Water and life-forms are typically abundant. If water covers less than 97% of the surface, then they are considered class M.
	CLASS S
	Type:	Near Star
	Size:	50,000,000km - 120,000,000km
	Description:	Usually found in a star's "cold zone." They have high core temperatures causing them to radiate heat and light. These are the largest possible planets, because most planetary bodies that reach this size do become stars.
	CLASS T
	Type:	Ultra Giant
	Size:	10,000,000km - 50,000,000km
	Description:	Usually found in a star's "cold zone." They have high core temperatures causing them to radiate enough heat to keep water in a liquid state.
	CLASS Y
	Type:	Demon
	Size:	10,000km - 15,000km
	Description:	Demon Planets and planetoids of this class can be found in any of a star's zones. Atmospheric conditions are often turbulent and saturated with poisonous chemicals and thermionic radiation. Surface temperatures can reach in excess of 500 K. Communication is frequently impossible, and transport may be difficult. Simply entering orbit is a dangerous prospect. No known environment is less hospitable to humanoid life than a Class Y planetary body.