D-type asteroid
Type of asteroid spectral group / From Wikipedia, the free encyclopedia
D-type asteroids have a very low albedo and a featureless reddish spectrum.[1] It has been suggested that they have a composition of organic-rich silicates, carbon and anhydrous silicates, possibly with water ice in their interiors.[citation needed] D-type asteroids are found in the outer asteroid belt and beyond; examples are 152 Atala, 944 Hidalgo and most Jupiter trojans. It has been suggested that the Tagish Lake meteorite was a fragment from a D-type asteroid, and that the Martian moon Phobos is closely related.[2]
The Nice model suggests that D-type asteroids may have originated in the Kuiper belt.[3] 46 D-type asteroids are known, including: 3552 Don Quixote, 944 Hidalgo, 624 Hektor, and 10199 Chariklo.[4]