Mars’ Moons
- Phobos:
- Diameter: 22.4 km (13.9 miles)
- Orbit:
- Average Distance from Mars: 9,377 km (5,827 miles)
- Orbital Period: 7.6 hours
- Composition: Likely composed of carbonaceous chondrite material.
- Surface Features: Heavily cratered, with a prominent crater named Stickney.
- Movement: Phobos is slowly spiraling inward toward Mars.
- Deimos:
- Diameter: 12.4 km (7.7 miles)
- Orbit:
- Average Distance from Mars: 23,460 km (14,580 miles)
- Orbital Period: 30.3 hours
- Composition: Similar to Phobos, likely carbonaceous chondrite material.
- Surface Features: Smooth surface with small craters and grooves.