- Phobos Mars I Phobos ( FOH bus ) is the larger and innermost of Mars' two moons. Phobos is closer to its primary than any other moon in the solar system, less than 6000 km above the surface of Mars. It is also one of the smallest moons in the solar system. orbit: 9378 km from the center of Mars diameter: 22.2 km (27 x 21.6 x 18.8) mass: 1.08e16 kg In Greek mythology, Phobos is one of the sons of ...nineplanets.org/phobos.html
- nssdc.gsfc.nasa.gov/planetary/phobos.html
- Phobos Video: Highly Detailed Animation of Phobos ...solarviews.com/cap/mars/vphobos4.htm