Planet
A planet or world was a primary prototypical planetary body that typically orbited a star; where rogue planets did not. Planets varied greatly in size, composition, surface environment, and atmospheric compounds. The Federation had numerous different classifications for planets depending on these variables. 

Planets could be changed to a class M environment by terraforming. (; )

By 2399, a septillion planets were known to Federation science. ()

In 2259, in the alternate reality, when targeted comm bursts were broadcast to distant planets from Starfleet starships, planetary information was displayed on the main viewscreen, such as the class and status as a living planet (a planet with life), its moons, the native intelligent species, the star system, sector and sector block locations. Geographical information was also displayed. ( display graphic)

Types
 Binary planet
 Capital planet
 Gas giant
 Homeworld

Lists
All planets
Inhabited planets
Uninhabited planets
Delphic Expanse planets
Unnamed planets
By political affiliation:
Cardassian planets
Dominion planets
Earth colonies
Federation colonies
Federation members
Homeworlds
Klingon planets
Romulan planets
By position:
Prime planets
First planets
Second planets
Third planets
Fourth planets
Fifth planets
Sixth planets
Seventh planets
Eighth planets
Ninth planets
Tenth planets
Eleventh planets
Twelfth planets
Fourteenth planets
Twentieth planets

External links
 
 

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Celestial objects