YT-20 is the seventh moon of Kkaggrak. It is mainly silicate rock.
YT-20 is an average asteroid moon,
With a mass of 0.00199 times earth, YT-20 does not have enough gravity to pull itself together. Therefore it cannot be colonized.
Mainly silicate, YT-20 is average. It also has a tiny bit of iron at its center. Some gold has been detected, as well. With all asteroids of its size, it does not have an atmosphere.