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G-type asteroid
From Wikipedia, the free encyclopedia
G-type asteroids are a relatively uncommon type of carbonaceous asteroid. The most notable asteroid in this class is 1 Ceres.
Generally similar to the C-type objects, but containing a strong ultraviolet absorption feature below 0.5μm. An absorption feature around 0.7μm may also be present, which is indicative of phyllosilicate minerals such as clays or mica.
In the SMASS classification the G-type corresponds to the Cgh and Cg types, depending on the presence or absence (respectively) of the absorption feature at 0.7μm. The G-type, C-type and some rare types are sometimes collected together into a wider C-group of carbonaceous asteroids.
Vulcanoids · Near-Earth asteroids · Main belt · Jupiter Trojans · Centaurs · Damocloids · Comets · Trans-Neptunians (Kuiper belt • Scattered disc • Oort cloud)
For other objects and regions, see Asteroid groups and families, Binary asteroids, Asteroid moons and the Solar System.
For a complete listing, see List of asteroids. See also Pronunciation of asteroid names and Meanings of asteroid names.
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