Uranus (Uranus)

 Uranus (Uranus)

Orbital Characteristics


Perihelion: 2,748,938,461 km, 18.37551863 AE

Aphelion: 3,004,419,704 km, 20.08330526 AE

Semi-major axis: 2,876,679,082 km, 19.22941195 AE

Eccentricity: 0.044405586

Orbital period: 30,799.095 days, 84.323326 years

Synodic period: 369.66 days

Average orbital speed: 6.81 km/s

Mean anomaly: 142.955717°

Inclination: 0.772 556°

Longitude of ascending node: 73.989821°

Argument of perihelion: 96.541 318°



Satellites/moons: 27 (Cordelia, Ophelia, Bianca, Cressida, Desdemona, Juliet, Portia, Rosalind, Mab, Belinda, Perdita, Puck, Cupid, Miranda, Francisco, Ariel, Umbriel, Titania, Oberon, Caliban, Stephano, Trinculo, Sycorax, Margaret, Prospero, Setebos, Ferdinand)


Physical Characteristics

Equatorial radius: 25,559 km (4.007 x Earth)

Flattening: 0.0229 ± 0.0008

Surface area: 8.1156×109 km2 (15.91 x Earth)

Volume: 6.833×1013 km3 (63.086 x Earth)

Mass: 8.6823×1025 kg (14.536 x Earth)

Mean density: 1.27 g/cm3

Equatorial surface gravity: 8.69 m/s2

Escape velocity: 21.3 km/s

Sidereal rotation period: −0.71833 day Earth days, 17 h 14 min 24 s Earth hours

Axial tilt : 97.77°

Albedo: 0.51

Average surface temperatures: 57 K, -216 °C, -357 °F

Apparent magnitude: 5.9 to 5.32

Angular diameter: 3.3"–4.1"

The Atmosphere

Composition:

82.5% Hydrogen (H2)

15.2% Helium

2.3% Methane (CH4)

148ppm Hydrogen Deuteride (HD)

Source