Canon:Celestial body
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A celestial body is any object ranging in size from an asteroid to a sun.[1]
The most common size of celestial body is a planetary mass. Celestial bodies come in a large number of shapes although the most common shape is spherical.[1]
Celestial bodies usually have a breathable atmosphere, although bodies without atmospheres or with poisonous atmospheres exist. The depth of an atmosphere is usually related to the size of the body.[1]
Contents
Celestial Body Classification[edit]
Spacefarers use a standard system to categorise celestial bodies.[2]
Size Classes[edit]
Size classes give information about the diameter of a celestial body:
- Size A - Less than 10 miles in diameter
- Size B - 10-100 miles in diameter
- Size C - 100-1,000 miles in diameter
- Size D - 1,000-4,000 miles in diameter
- Size E - 4,000-10,000 miles in diameter
- Size F - 10,000-40,000 miles in diameter
- Size G - 40,000-100,000 miles in diameter
- Size H - 100,000-1,000,000 miles in diameter
- Size I - 1,000,000-10,000,000 miles in diameter
- Size J - More than 10,000,000 miles in diameter
Shape Classes[edit]
Shape classes give information about the general shape of the celestial body:
- Amorphous (flexible)
- Belt (smaller objects in a single orbit)
- Cluster (smaller objects in a small area)
- Cubic
- Elliptical
- Spherical
Two special shape classes exist for planets that do not conform to one of the above shapes:
- Regular (a regular shape that isn't otherwise listed)
- Irregular (a shape that isn't listed)
Type Classes[edit]
Type classes give information about the substance which is most common on the celestial body:
- Air (also called a gas cloud)
- Earth (also called a world)
- Fire (also called a sun)
- Water (also called a water world)
Some sages add a fifth element:
- Plant (also called a liveworld)
Supplemental Notes[edit]
Supplemental notes give additional information about a celestial body. Examples include, but are not limited to:
- Presence of and number of moons
- Lack of atmosphere
- Lethal atmosphere
- A hollow planet
- Large extradimensional gates
- Xenophobic natives (marked by an 'X')
See also[edit]
- Category:Celestial bodies (the celestial body category)
References[edit]
- ↑ 1.0 1.1 1.2 Jeff Grubb (1989). AD&D Adventures in Space. (2e) TSR. ISBN 0-88038-762-9. Concordance of Arcane Space. p. 6.
- ↑ Jeff Grubb (1989). AD&D Adventures in Space. (2e) TSR. ISBN 0-88038-762-9. Concordance of Arcane Space. Celestial Body Classification sidebar, pp. 34, 36, 38, 40 and 42.
External links[edit]
- Celestial Body Classification at Beyond the Moons (the official Spelljammer website)
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