Saturn (Zuhal)

Saturn (Zuhal)

Orbital Characteristics


Perihelion: 1,353,572,956 km, 9.04807635 AE

Aphelion: 1,513,325,783 km, 10.11595804 AE

Semi-major axis: 1,433,449,370 km, 9.58201720 AE

Eccentricity: 0.055723219

Orbital period: 10,832.327 days, 29.657296 years

Synodic period: 378.09 days

Average orbital speed: 9.69 km/s

Mean anomaly: 320.346750°

Inclination: 2.485 240°

Longitude of ascending node: 113.642811°

Argument of perihelion: 336.013862°

Satellites/moons: 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

Equatorial radius: 60,268 km (9.4492 x Earth)

Flattening: 0.09796 ± 0.00018

Surface area: 4.27×1010 km2 (83.703 x Earth)

Volume: 8.2713×1014 km3 (763.59 x Earth)

Mass: 5.6846×1026 kg (95.152 x Earth)

Mean density: 0.687 g/cm3

Equatorial surface gravity: 8.96 m/s2

Escape velocity: 35.5 km/s

Sidereal rotation period: 0.439 – 0.449 day Earth days, 10 h 32 – 47 min) Earth hours

Axial tilt : 26.73°

Albedo: 0.47

Average surface temperatures: 95 K, -178 °C, -288 °F

Apparent magnitude: +1.2 to -0.24

Angular diameter: 14.5" — 20.1"


The Atmosphere

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)

Source