Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Built Environment (hierarchy name)
4. Settlements and Landscapes (hierarchy name)
5. landscapes (environments)
6. natural landscapes
7. extraterrestrial bodies

Additional parents:

1. top of the aat hierarchies
2. Materials Facet
3. Materials
4. materials
5. materials by composition
6. inorganic material
7. rock
8. rock by form

Anotations

Scope note:

An extraterrestrial body consisting of a frozen mass and rock debris that travels around the Sun in a highly elliptical orbit; it generally developes a diffuse gaseous envelope and a long luminous tail when near the Sun.