Calculate your weight on: The Moon. The Solar System Planets: Mercury, Venus, Mars, Jupiter, Saturn, Uranus, Neptune. Dwarf Planets: Pluto and Ceres. Moons of Mars: Phobos and Deimos. Moons of Jupiter: Io, Europe, Ganymedes and Callisto. Moons of Saturn: Titan, Enceladus, Thetys, Rhea, Dione, Iapetus, Mimas, Phoebe and Hyperion.