Saturne  

Saturne

Saturne
Orbital Characteristics of Saturn

Caractéristiques orbitales

Périhélie: 1,353,572,956 km, 9.04807635 AE
Aphélie: 1,513,325,783 km, 10.11595804 AE
Demi-grand axe: 1,433,449,370 km, 9.58201720 AE
Excentricité: 0.055723219
Période de révolution: 10,832.327 jours, 29.657296 années
Période synodique: 378.09 jours
Vitesse orbitale moyenne: 9.69 km/s
Anomalie moyenne: 320.346750°
Inclinaison: 2.485 240°
Longitude du nœud ascendant: 113.642811°
Argument du périhélie: 336.013862°

Satellites/Lunes: 60 (Mimas, Enceladus, Tethys, Dione, Rhea, Titan, Hyperion, Iapetus, Erriapus, Phoebe, Janus, Epimetheus, Helene, Telesto, Calypso, Kiviuq, Atlas, Prometheus, Pandora, Pan, Ymir, Paaliaq, Tarvos, Ijiraq, Suttungr, Mundilfari, Albiorix, Skathi, Siarnaq, Thrymr, Narvi, Methone, Pallene, Polydeuces, Daphnis, Aegir, Bebhionn, Bergelmir, Bestla, Farbauti, Fenrir, Fornjot, Hati, Hyrokkin, Kari, Loge, Skoll, Surtur, S/2004 S7, S/2004 S12, S/2004 S13, S/2004 S17, S/2006 S1, S/2006 S3, Greip, Jarnsaxa, Tarqeq, S/2007 S2, S/2007 S3, Anthe)

Physical Characteristics of Saturn

Caractéristiques physiques

Rayon équatorial: 60,268 km (9.4492 x Terre)
Aplatissement: 0.09796 ± 0.00018
Superficie: 4.27×1010 km2 (83.703 x Terre)
Volume: 8.2713×1014 km3 (763.59 x Terre)
Masse: 5.6846×1026 kg (95.152 x Terre)
Masse volumique moyenne: 0.687 g/cm3
Gravité à la surface: 8.96 m/s2
Vitesse de libération: 35.5 km/s
Sidereal rotation period: 0.439 – 0.449 day Earth days, 10 h 32 – 47 min) Earth hours
Inclinaison de l’axe: 26.73°
Albédo moyen: 0.47
Température de surface: 95 K, -178 °C, -288 °F
Magnitude apparente: +1.2 to -0.24
Diamètre angulaire: 14.5" — 20.1"
The Atmosphere of Saturn

Atmosphère

Composition:
  • 96.3% Molecular Hydrogen (H2)
  • 3.25% Helium
  • 0.4% Methane (CH4)
  • 125 ppm Ammonia (NH3)
  • 110 ppm Hydrogen Deuteride (HD)
  • 7ppm Ethane (C2H6)

    Saturn images:


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