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Main planets, Belt planets, Moon planets etc



 
 
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Old March 7th 09, 08:03 PM posted to sci.astro
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Default Main planets, Belt planets, Moon planets etc

== Main planets, Belt planets, Moon planets etc ==

I think wikipedia should use adjectives to distinguish different types
of planets:

'''Planet''' (massive enough to be round, not so massive as to have
fusion)

'''Main planet''' (orbiting roughly in ecliptic plane, not part of a
belt):
*Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune

'''Belt planet''' (orbiting within a belt):
*Ceres, Pluto-Charon etc

'''Scattered planet''' (scattered):
*Eris etc

'''Moon planet''' (orbiting another planet):
*The Moon, Io, Europa, Ganymede, Callisto, Titan, Dione, Ariel,
Umbriel, Triton etc

'''Floating planet''' (orbiting the galaxy itself rather than another
object).

This is a lot simpler than IAU's recent technical definition. The word
planet on its own would usually refer to a Main planet but this would
depend on the context. Moon planets would still be referred to as
moons most of the time.
 




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