Table 2

Overview of the current knowledge regarding the surface and bulk composition of large asteroids (D > 100 km) belonging to the main taxonomic classes.

Asteroid type Surface composition Families Bulk density Differentiated
S Ordinary chondrites Homogeneous Ordinary chondrites No
Ch/Cgh CM chondrites Homogeneous CM chondrites No
C/Cb/Cg Chondritic smooth IDPs ? Heterogeneous ? <CM chondrites ?
P Chondritic porous IDPs Heterogeneous <CI/TL Likely yes
M/X ECs, CB/CH, unsampled material? ? <CB, >CH, ≫EC Likely yes (21, 22)
16, 216: TBD

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