Difference between revisions of "Canon:Planet"
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''"I never get tired of looking at that when I come home."'' | ''"I never get tired of looking at that when I come home."'' | ||
| − | -- '''frequent sentiment of many individuals returning to a [[home planet]]''' | + | -- '''frequent sentiment of many individuals returning to a [[home planet]]'''{{fact}} |
== Definition == | == Definition == | ||
| − | A | + | A '''planet''' in the Spelljammer setting is a large [[celestial body]] that (generally) fits all of the following criteria, though there are exceptions: |
| − | Is large enough to possess an independent [[gravity field]] (standard rules do not apply; the gravity fields of stellar objects are almost always extremely small for the size of the object) | + | Is large enough to possess an independent [[gravity field]] (standard rules do not apply; the gravity fields of stellar objects are almost always extremely small for the size of the object). |
| − | Does ''not'' [[orbit]] another stellar body which orbits a [[primary]] | + | Does ''not'' [[orbit]] another stellar body which orbits a [[primary]]. |
| − | Is ''not'' a strange object that forms a tail when its extremely oval orbit brings it close to a primary (that is, not a [[comet]]) | + | Is ''not'' a strange object that forms a tail when its extremely oval orbit brings it close to a primary (that is, not a [[comet]]). |
A planet ''usually'' meet the following secondary criteria, as well: | A planet ''usually'' meet the following secondary criteria, as well: | ||
| − | Orbits a primary in such a manner that the orbit is circular, or nearly so | + | Orbits a primary in such a manner that the orbit is circular, or nearly so. |
| − | Is shaped like a sphere, a cube, or other recognizable shape, including irregular (as opposed to dust clouds, nebulae, and visible sargassos that frequently have no recognizable boundaries, or at least, no permanent boundaries) | + | Is shaped like a sphere, a cube, or other recognizable shape, including irregular (as opposed to dust clouds, nebulae, and visible sargassos that frequently have no recognizable boundaries, or at least, no permanent boundaries). |
| − | Is at least 500 miles in diameter; smaller objects are usually called asteroids (but smaller objects might be called planets, according to local traditions, and this criterion definitely does not apply to cluster worlds) | + | Is at least 500 miles in diameter; smaller objects are usually called asteroids (but smaller objects might be called planets, according to local traditions, and this criterion definitely does not apply to cluster worlds). |
| − | Is not located inside an [[asteroid]] belt (exceptions exist; these are almost always dwarf planets) | + | Is not located inside an [[asteroid]] belt (exceptions exist; these are almost always dwarf planets). |
'''Notes''' | '''Notes''' | ||
| − | It is possible for a planet to be a primary (the planet [[Oerth]] in [[Greyspace]] is a very good example). In that event, it is still a planet | + | It is possible for a planet to be a primary (the planet [[Oerth]] in [[Canon:Greyspace|Greyspace]] is a very good example). In that event, it is still a planet. |
| − | As noted above, cluster worlds are planets. Although the individual bodies of the cluster are typically far too small to be planets, the entire cluster qualifies as a planet | + | As noted above, cluster worlds are planets. Although the individual bodies of the cluster are typically far too small to be planets, the entire cluster qualifies as a planet. |
== Typical Qualities == | == Typical Qualities == | ||
| − | Most planets have atmospheres, but some are void worlds, with no [[air]] of any kind. The air is usually breathable, but again, not always | + | Most planets have atmospheres, but some are void worlds, with no [[air]] of any kind. The air is usually breathable, but again, not always. |
| − | Some planets have smaller worlds that orbit them, called [[moon]]s | + | Some planets have smaller worlds that orbit them, called [[moon]]s. |
| − | Some planets also have [[rings]] around them | + | Some planets also have [[rings]] around them. |
| − | In rare cases, a moon may have a moon or rings, or even both | + | In rare cases, a moon may have a moon or rings, or even both. |
== Let the space traveler beware == | == Let the space traveler beware == | ||
| Line 45: | Line 44: | ||
Some cultures may call something a planet that, objectively, is most certainly not; it is usually best to respect, or at least ignore and refrain from commenting upon, local customs! | Some cultures may call something a planet that, objectively, is most certainly not; it is usually best to respect, or at least ignore and refrain from commenting upon, local customs! | ||
| − | == See | + | |
| + | == References == | ||
| + | *{{Cite_Pub|AD&D Adventures in Space}} | ||
| + | *{{Cite_Pub|Greyspace}} | ||
| + | |||
| + | Physical description of what a planet is: All worlds described in the ''[[Lorebook of the Void]]'' fit the rough criteria given above. | ||
| + | |||
| + | Atmosphere references: ''[[Concordance of Arcane Space]]'' | ||
| + | |||
| + | Example of a planet being the primary of a crystal shell: ''[[Lorebook of the Void]]'', ''[[Publication:Greyspace|Greyspace]]'' | ||
| + | |||
| + | The large asteroid Ceres in Greyspace is not listed in ''Greyspace'' as a planet. | ||
| + | |||
| + | |||
| + | == See also == | ||
[[Crystal sphere]] | [[Crystal sphere]] | ||
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[[Orbit]] | [[Orbit]] | ||
| + | |||
| + | |||
| + | ---- | ||
| + | {{Canon Terms Breadcrumb}}<br /> | ||
| + | {{Canon Breadcrumb/Spelljammer}} | ||
| + | |||
| + | [[Category:Term]] | ||
| + | [[Category:Spelljammer]] | ||
| + | [[Category:Celestial bodies]] | ||
| + | [[Category:LotV canon]] | ||
Latest revision as of 22:20, 2 November 2017
| This article is based on material by: |
"I never get tired of looking at that when I come home."
-- frequent sentiment of many individuals returning to a home planet[citation needed]
Contents
[hide]Definition[edit]
A planet in the Spelljammer setting is a large celestial body that (generally) fits all of the following criteria, though there are exceptions:
Is large enough to possess an independent gravity field (standard rules do not apply; the gravity fields of stellar objects are almost always extremely small for the size of the object).
Does not orbit another stellar body which orbits a primary.
Is not a strange object that forms a tail when its extremely oval orbit brings it close to a primary (that is, not a comet).
A planet usually meet the following secondary criteria, as well:
Orbits a primary in such a manner that the orbit is circular, or nearly so.
Is shaped like a sphere, a cube, or other recognizable shape, including irregular (as opposed to dust clouds, nebulae, and visible sargassos that frequently have no recognizable boundaries, or at least, no permanent boundaries).
Is at least 500 miles in diameter; smaller objects are usually called asteroids (but smaller objects might be called planets, according to local traditions, and this criterion definitely does not apply to cluster worlds).
Is not located inside an asteroid belt (exceptions exist; these are almost always dwarf planets).
Notes
It is possible for a planet to be a primary (the planet Oerth in Greyspace is a very good example). In that event, it is still a planet.
As noted above, cluster worlds are planets. Although the individual bodies of the cluster are typically far too small to be planets, the entire cluster qualifies as a planet.
Typical Qualities[edit]
Most planets have atmospheres, but some are void worlds, with no air of any kind. The air is usually breathable, but again, not always.
Some planets have smaller worlds that orbit them, called moons.
Some planets also have rings around them.
In rare cases, a moon may have a moon or rings, or even both.
Let the space traveler beware[edit]
Some cultures may call something a planet that, objectively, is most certainly not; it is usually best to respect, or at least ignore and refrain from commenting upon, local customs!
References[edit]
- Jeff Grubb (1989). AD&D Adventures in Space. (2e) TSR. ISBN 0-88038-762-9.
- Nigel Findley (1992). Greyspace. (2e) TSR. ISBN 1-56076-348-5.
Physical description of what a planet is: All worlds described in the Lorebook of the Void fit the rough criteria given above.
Atmosphere references: Concordance of Arcane Space
Example of a planet being the primary of a crystal shell: Lorebook of the Void, Greyspace
The large asteroid Ceres in Greyspace is not listed in Greyspace as a planet.
See also[edit]
Back to Main Page → DnD Encyclopedia → Terms
Back to Main Page → DnD Encyclopedia → Campaign Settings → Spelljammer
