D-type asteroids

D-type asteroids

A class of asteroid whose members are rare in the main belt but become increasingly dominant in the regions beyond the 2:1 Jovian resonance at 3.2 AU (see Kirkwood gaps). The observed surface coloring may be due to carbon-rich kerogenlike material.
References in periodicals archive ?
Instead, we find a largely uniform population of what we call D-type asteroids, which are dark burgundy in colour, with the rest being C- and P-type, which are more grey-bluish in colour.
Both T-type and the related D-type asteroids are very similar in their spectral reflectance to the porous carbonaceous Tagish Lake meteorite.