Object | Earth | Saturn |
---|---|---|
Type | Rocky planet | Gaseous planet |
Age | 4.54 billion years | 4.5 billion years |
Population | 7.7 billion | 0 |
Diameter | 12,742 km | 116,460 km |
Mean radius | 6,371 km | 58,232 km |
Mass | 5.97 × 1024 kg | 5.68 × 1026 kg |
Orbital period | 365 days | 29 years |
Rotation duration | 24 hours | 10 hours |
Surface temperature (average) |
288 K 14.9 °C 58.7 °F |
84 K -189 °C -308 °F |
Surface gravity | 9.8 m/s² | 10.44 m/s² |
Mean density | 5.5 g/cm3 | 0.68 g/cm3 |
Orbital distance | 150 million km | 1,427 million km |
Circumference | 40,075 km | 378,675 km |
Surface area | 510 million km² | 42.7 × 109 km2 |
Volume | 1.08 × 1012 km3 | 8.27 × 1014 km3 |
Escape velocity | 11.1 km/s | 35.5 km/s |
Average orbital speed | 29.78 km/s | 9.68 km/s |
Aphelion | 152 million km | 1,514 million km |
Perihelion | 147 million km | 1,352 million km |
Semi major axis | 149 million km | 1,433 million km |
Inclination | 7.1° | 2.48° |
Satellites | 1 natural satellite 5 quasi-satellites 1,800 artificial satellites |
82 natural satellites 0 quasi-satellite 0 artificial satellite |
Surface pressure | 101.3 kPa | 140 kPa |
Atmosphere composition | 78% nitrogen (N2), 21% oxygen (O2), ~ 1% water vapor, 0.9% argon, 0.04% carbon dioxide |
96.3% hydrogen, 3.25% helium, 0.45% methane, 0.0125% ammonia, 0.0110% hydrogen deuteride |
Distance from the Milky Way center | 27,200 light years | 27,200 light years |