Solar System Parameters


MercuryVenusEarthMarsJupiterSaturn UranusNeptunePluto
Mass (1024 kg)
0.33024.8695.9750.64191,898.6568.4686.83 102.430.0125
Eq. Radius (km)
243960526378339371,49260,26825,559 24,7661137
Mean Density (kg/m3)
5,4275,2045,5203,9331,326687 1,3181,6382,050
Orbital Distance (106km)
57.9108.2149.6227.9778.31427.02869.6 4496.64913.5
Orbital Period (days)
87.969224.7365.25686.984330.610,747 30,58859,80090,591
Rotational Period (hours)
1407.65832.5 (ret.)23.93424.629.9210.517.24 (ret.)16.11153.3 (ret.)
Ave. Surf. Temp. (K)
44073728821012997585850
Surface Pressure
10-15 bars92 bars1.014 bars0.008 bars>>100 bars>>100 bars>>100 bars>>100 bars3 microbars
Atm. Comp.
98% He 2% H296.5% CO2, 3.5% N278% N2, 21% O2, 1% H2O95.32% CO2, 2.7% N289% H2, 11% He89% H2, 11% He89% H2, 11% He89% H2, 11% He meth, N2

Satellite Parameters (Jupiter, Earth, Pluto)


Jupiter: IoJupiter: EuropaJupiter: GanymedeJupiter: CallistoEarth: MoonPluto: Charon
Mass (1020 kg)
893.3479.71482107673517
Radius (km)
1,821.31565263424031738586
Mean Density (kg/m3)
3,5302,9901,9401,8513,3401,800
Orbital Distance (103 km)
421.6670.910701883384.419.4
Orbital Period (days)
1.773.557.1516.6927.36.39

Other Useful Parameters

MaterialDensity
Air1.2 kg/m3
Water or Ice1000 kg/m3
Typical Rocks3000 kg/m3
Metal at High Pressure10,000 kg/m3

This module was written by Cynthia Phillips, Dept. of Planetary Sciences, University of Arizona, Tucson AZ, and funded in part by the NASA Spacegrant program.

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Galileo Solid State Imaging Team Leader: Dr. Michael J. S. Belton

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Last updated: September 17, 1999, by Matthew Fishburn

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