Monday, January 16, 2006

Jupiter


Mass (kg): 1.90 x 1027
Diameter(km): 142,800
Mean density(kg/m3): 1314
Escape velocity(m/s): 59500
Average distance from Sun: 5.203 AU (778,412,020 km)
Rotation period(length of day in Earth days): 0.41 (9.8 Earth hours)
Revolution period (length of year in Earth years): 11.86
Obliquity(tilt of axis degrees): 3.08
Orbit inclination (degrees): 1.3
Orbit eccentricity (deviation from circular): 0.048
Mean surface temperature (K): 120 (cloud tops) (-153 oC)
Satellites: 62
Visual geometric albedo
(reflectivity): 0.44
Atmospheric components: 90% hydrogen (H), 10% helium (He), .07% methane (CH4)
Rings: Faint ring. Infrared spectra imply dark rock fragments.


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