Uranus, the seventh planet from the Sun.
Other names None
Orbital Characteristics
Adjective Uranian
Aphelion 3,004,419,704 km
Semimajor axis 2,876,679,082 km
Orbital Period 30,799 earth days (84 earth years)
Average orbital speed 6.81 km/s (15,233 mph, 24,515 km/h)
Satellites 27 (Click here for full list)
Physical Characteristics
Surface area 8.115 6×109 km2 (15 earths)
Volume 6.833×1013 km3 (63 earths)
Mass (8.6810 ± 0.0013)×1025 kg (14 earths)
Axial tilt 97.77°
Surface temperature (min) 49 K (-371 °F, -224 °C)
Surface temperature (avg) 53 K (-364 °F, -220 °C)
Surface temperature (mean) 53 K (-364 °F, -220 °C)
Surface temperature (max) 57 K (-357 °F, -216 °C)
Other information
Population 0
Surface Pressure Unknown
Composition 83 ± 3% hydrogen

15 ± 3% helium 2.3% methane 0.009% (0.007–0.015%) hydrogen deuteride (HD)

Habitable No, far too cold, too far from sun and gas giant

Uranus is the seventh planet from the Sun. It has the third-largest planetary radius and fourth-largest planetary mass in the Solar System. Uranus is similar in composition to Neptune, and both are of different chemical composition than the larger gas giants Jupiter and Saturn. For this reason, astronomers sometimes place them in a separate category called "ice giants". Uranus's atmosphere, although similar to Jupiter's and Saturn's in its primary composition of hydrogen and helium, contains more "ices" such as water, ammonia, and methane, along with traces of hydrocarbons.

Uranus has the coldest planetary atmosphere in the Solar System, with minimum temperatures being 49 K (-371 °F, -224 °C).

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