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A spacedock carved into an asteroid.

An asteroid is a small, rocky celestial body, usually of irregular shape and smaller than a planet or planetoid. They often result during the formation of a star system when stellar materials fail to form into a single body. In some cases, asteroids are the result of the destruction of larger celestial bodies.

History and specifics

Humans and other races have converted larger asteroids into habitats by mining their interiors and building with their hollow shells. Project Genesis is a notable example of an asteroid being utilized in this way. (TOS movie: Star Trek II: The Wrath of Khan)


There were many asteroids around Bajor. The Bajoran Resistance used to land their ships on asteroids and ride them undetected through the B'hava'el system. In 2370, Kira Nerys used the same tactic with a Starfleet runabout in the Davon system to sneak the vessel close to a moon to rescue a kidnapped Horta. (DS9 novel: Devil in the Sky)

At the Rashanar Battle Site, there was an asteroid composed of antimatter from the destroyed ships there. (TNG novels: A Time to Be Born, A Time to Die)

The natives of a planet in the Nabu system sent their criminals to asteroids which were doomed to explode. (TOS comic: "The Devil's Isle of Space")


The asteroids in the Ferrous-Asteroid Belt were unusually high in iron content. They were mined until such operations were made illegal. (TOS comic: "The Trial of Captain Kirk")

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See also: asteroid belt



Galactic regions: quadrantsectorclusternebulastar system
System bodies: starplanetplanetoiddwarf planetasteroidmeteoroidcomet

External links