Worlds of David Darling
Encyclopedia of Science
   
Home > Encyclopedia of Science

G-class asteroid




Ceres
Ceres: a G-class asteroid
Image credit: NASA/Hubble

A dark asteroid belonging to a subcategory of C-class asteroids, distinguished by having a very strong ultraviolet absorption feature at wavelengths shorter than 0.4 microns due to water of hydration in the surface rocks. G-class asteroids, of which the best known and largest example is Ceres (now officially classified as a dwarf planet), have albedos of 0.05 to 0.09.


Related category

   • ASTEROIDS AND OTHER MINOR PLANETS: TYPES AND GROUPS