Some Useful Planetary and Gas Data
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Mass (kg) |
Radius (m) |
Mean mass (g/mole) |
T surface (K) |
P surface (bar)* |
Acceleration due to
gravity (m/s) |
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Mercury |
3.30E+23 |
2.44E+06 |
20.60 |
443 |
1.00E-15 |
8.7 |
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Venus |
4.87E+24 |
6.05E+06 |
43.45 |
733 |
92.1 |
8.9 |
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Earth |
5.98E+24 |
6.38E+06 |
28.97 |
288 |
1.013 |
9.8 |
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Mars |
6.50E+23 |
3.40E+06 |
43.34 |
223 |
0.0063 |
3.7 |
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Jupiter |
1.90E+27 |
7.15E+07 |
2.22 |
120 |
1 |
23.1 |
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Saturn |
5.70E+26 |
6.03E+07 |
2.07 |
89 |
1 |
9.0 |
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Titan |
1.35E+23 |
2.58E+06 |
28.60 |
95 |
1.5 |
1.4 |
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Uranus |
8.70E+25 |
2.56E+07 |
2.64 |
53 |
1 |
8.7 |
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1.00E+26 |
2.48E+07 |
2.61 |
54 |
1 |
11.1 |
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Pluto |
1.30E+22 |
1.16E+06 |
20.50 |
40 |
1.00E-05 |
0.7 |
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* surface
pressure of Giant planets is arbitrarily taken to be 1.00 bar |
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For more
data see, for example, http://www.solarviews.com/ |
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Orbital eccentricity |
Orbital Inclination
(deg) |
Orbital period* |
Axial Rotation Period
(days)* |
Axial inclination
(deg) |
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Mercury |
0.206 |
7.0 |
88.0 d |
58.6 |
0.1 |
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Venus |
0.007 |
3.4 |
224.7 d** |
243 |
177.3 |
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Earth |
0.017 |
0.0 |
365.0 d |
0.997 |
23.5 |
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Mars |
0.093 |
1.9 |
686.5 d |
1.03 |
25.2 |
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Jupiter |
0.048 |
1.3 |
11.86 y |
0.412 |
3.1 |
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Saturn |
0.054 |
2.5 |
29.42 y |
0.444 |
26.7 |
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Titan |
0.029 |
0.3 |
15.95 d |
15.95 d |
? |
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Uranus |
0.047 |
0.8 |
83.75 y** |
0.718 |
97.9 |
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0.009 |
1.8 |
163.7 y |
0.671 |
29.6 |
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Pluto |
0.249 |
17.1 |
248.0 y |
6.39 |
119.6 |
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*These are sidereal periods quoted in Earth days or
years.
**Venus and
Uranus rotate in the opposite sense to the other planets.
Data in
this table is from McBride and Gilmour, An
Introduction to the Solar System.
Gas Data
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Gas |
Specific Heat at
Constant Pressure (J/kgK) |
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CO2 |
830 |
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Air |
1004 |
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N2 |
1042 |
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H2 |
13,000 |