The table gives some information about different objects in the universe.
| Object | Description |
|---|---|
| Titan | Orbits the planet Saturn in an almost circular orbit |
| Andromeda | A large collection of billions of stars |
| Halley | Orbits the Sun in a highly elliptical orbit |
| Kepler-186f | Orbits the star Kepler-186 in an almost circular orbit |
Which of these objects is a moon?
Titan
Andromeda
Halley
Kepler-186f