Jupiter  

Jupiter

Jupiter
Orbital Characteristics of Jupiter

Orbital Characteristics

Perihelion: 740,573,600 km, 4.950429 AE
Aphelion: 816,520,800 km, 5.458104 AE
Semi-major axis: 778,547,200 km, 5.204267 AE
Eccentricity: 0.048775
Orbital period: 4331.572 days, 11.85920 years
Synodic period: 398.88 days, 1.092 years
Average orbital speed: 13.07 km/s
Mean anomaly: 18.818°
Inclination: 1.305°
Longitude of ascending node: 100.492°
Argument of perihelion: 275.066°

Satellites/moons: 63



Physical Characteristics of Jupiter

Physical Characteristics

Equatorial radius: 71,492 ± 4 km (11.209 x Earth)
Flattening: 0.06487 ± 0.00015
Surface area: 6.21796×1010 km2 (121.9 x Earth)
Volume: 1.43128×1015 km3 (1321.3 x Earth)
Mass: 1.8986×1027 kg (317.8 x Earth)
Mean density: 1.326 g/cm3
Equatorial surface gravity: 24.79 m/s2
Escape velocity: 59.5 km/s
Sidereal rotation period: 9.925 h Earth days, Earth hours
Axial tilt : 3.13°
Albedo: 0.52
Average surface temperatures: 125 K, -148 °C, -234 °F
Apparent magnitude: -1.6 to -2.94
Angular diameter: 29.8" — 50.1"


The Atmosphere of Jupiter

The Atmosphere

Composition:
  • 89.8 ± 2.0% Hydrogen (H2)
  • 10.2 ± 2.0% Helium
  • ca. 0.3% Methane (CH4)
  • ca. 0.026% Ammonia (NH3)
  • ca. 0.003% Hydrogen deuteride (HD)
  • 0.0006% Ethane (C2H6)
  • 0.0004% Water (H2O)


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