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 Uranus
Caractéristiques orbitales
Périhélie: 2,748,938,461 km, 18.37551863 AE
Aphélie: 3,004,419,704 km, 20.08330526 AE
Demi-grand axe: 2,876,679,082 km, 19.22941195 AE
Excentricité: 0.044405586
Période de révolution: 30,799.095 jours, 84.323326 années
Période synodique: 369.66 jours
Vitesse orbitale moyenne: 6.81 km/s
Anomalie moyenne: 142.955717°
Inclinaison: 0.772 556°
Longitude du nœud ascendant: 73.989821°
Argument du périhélie: 96.541 318°
Satellites/Lunes: 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)
Caractéristiques physiques
Rayon équatorial: 25,559 km (4.007 x Terre)
Aplatissement: 0.0229 ± 0.0008
Superficie: 8.1156×109 km2 (15.91 x Terre)
Volume: 6.833×1013 km3 (63.086 x Terre)
Masse: 8.6823×1025 kg (14.536 x Terre)
Masse volumique moyenne: 1.27 g/cm3
Gravité à la surface: 8.69 m/s2
Vitesse de libération: 21.3 km/s
Sidereal rotation period: -0.71833 day Earth days, 17 h 14 min 24 s Earth hours
Inclinaison de l’axe: 97.77°
Albédo moyen: 0.51
Température de surface: 57 K, -216 °C, -357 °F
Magnitude apparente: 5.9 to 5.32
Diamètre angulaire: 3.3"–4.1"
Composition: 82.5% Hydrogen (H2)
15.2% Helium
2.3% Methane (CH4)
148ppm Hydrogen Deuteride (HD)
Uranus images:
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NASA Breaking News
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NASA Television Updates Broadcast Schedule for Cargo Resupply Mission
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NASA Awards Contract for Safety, Mission Assurance Support
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