This article needs additional citations for verification. (June 2014) (Learn how and when to remove this template message)
Generally similar to the C-type objects, but contain a strong ultraviolet absorption feature below 0.5 μm. An absorption feature around 0.7 μm 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 0.7 μm. The G-type, C-type and some rare types are sometimes collected together into a wider C-group of carbonaceous asteroids.
- D. J. Tholen Asteroid taxonomic classifications in Asteroids III
|This asteroid-related article is a stub. You can help Wikipedia by expanding it.|