Has four moons that orbit the planet.
Has virtually no water on the surface.
Rotates on its axis once every 10 hours.
Orbits the Sun once every 12 years
The amount of its gravitational force
The number and size of active volcanoes
The tilt of the axis of rotation of the planet
The distance from the Sun of its orbit
The number of planets in the system.
The presence of a magnetosphere (magnetic field) to protect from cosmic radiation
How long the planet takes to rotate.
The orbit of the planet.
Collect needed radiant energy from the Sun.
Maintain a gravitational pull on the Moon.
Have sufficient gravity to hold the atmosphere.
Rotate on its axis once per day.
The tallest mountain in the solar system
Two moons orbiting the planet
Only a small amount of atmosphere
Small amounts of water in the soil