Uranus is the seventh planet from the Sun. It has a mass of 86.8 trillion trillion kg, an equatorial diameter of 51,118 km, 27 known moons, and a surface temperature of -197°C. Uranus takes 84 years to orbit the Sun, is referred to as an ice giant planet, has the coldest temperatures, two sets of dark rings, and rotates on its axis every 17 hours and 14 minutes.