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 Saturne
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)
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"
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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NASA Breaking News
NASA Invests in Concept Development for Missions to Comet, Saturn Moon Titan
NASA has selected two finalist concepts for a robotic mission planned to launch in the mid-2020s: a comet sample return mission and a drone-like rotorcraft that would explore potential landing sites on Saturn’s largest moon, Titan.
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NASA to Name Finalists for Future Solar System Mission
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NASA Astronaut Bresnik and Crewmates Return to Earth From Space Station
Three crew members who have been living and working aboard the International Space Station returned to Earth on Thursday, landing in Kazakhstan after opening a new chapter in the scientific capability of humanity’s premier microgravity laboratory.
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NASA Television Updates Broadcast Schedule for Cargo Resupply Mission
NASA commercial cargo provider SpaceX now is targeting no earlier than 10:36 a.m. EST Friday, Dec. 15, for its 13th commercial resupply services mission to the International Space Station.
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NASA Awards Contract for Safety, Mission Assurance Support
NASA has awarded the Safety and Mission Assurance Support Services III (SMASS III) contract to A-P-T Research, Inc. of Huntsville, Alabama, for a broad range of services at the agency’s Headquarters in Washington, Kennedy Space Center in Florida, and various sites supported by Kennedy’s programs and projects.
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