|
|
Mercury |
Venus |
Earth |
Mars |
Jupiter |
Saturn |
Uranus |
Neptune |
Pluto |
|
Mean Distance fron Sun(AU) |
0.39 |
0.72 |
1 |
1.52 |
5.2 |
9.54 |
19.18 |
30.06 |
29.44 |
Peroid of revolution about sun(years) |
0.24 |
0.62 |
1 |
1.88 |
11.86 |
29.46 |
84.01 |
164.79 |
247.7 |
Eccentricity of orbit |
0.21 |
0.01 |
0.02 |
0.09 |
0.05 |
0.06 |
0.05 |
0.01 |
0.25 |
Inclination of orbit(degrees) |
7 |
3.4 |
0 |
1.85 |
1.3 |
2.49 |
0.77 |
1.77 |
17.2 |
Mass(earth=1) |
0.06 |
0.82 |
1 |
0.11 |
317.8 |
95.1 |
14.5 |
17.2 |
<0.004> |
Radius(earth=1) |
0.38 |
0.95 |
1 |
0.53 |
11.2 |
9.42 |
4.1 |
3.88 |
<0.18> |
Mean density(water=1) |
5.4 |
5.3 |
5.5 |
3.9 |
1.3 |
0.7 |
<1.2> |
1.7 |
<1.99> |
Rotation peroid(about axis) |
58.7 days |
243 days* |
24 hours |
24.6 hours |
9.8 hours |
10.665 hours** |
<17.24> hours |
<16> hours |
<6.4> days |
Inclination of equator to orbit(degrees) |
0 |
-2 |
23.5 |
24 |
3 |
29 |
98 |
29 |
? |
Known satellites |
0 |
0 |
1 |
2 |
16 |
20+ |
15 |
2 |
1 |
Surface magnetic field(earth=1) |
0.01 |
0 |
1 |
<0.01 |
14 |
0.67 |
0.1 |
? |
? |
Major Planets
Notes: A distance of 1 AU is equivalent to 150 million km (93 million mi). A circle has an eccentricity of 0.0, a parabola 1.0. The inclination of a planetary orbit is measured with respect to the plane of the earth’s orbit. The earth’s mass is 5.98 x 1027 g, its mean radius is 6371 km, its surface magnetic field is 0.31 gauss. The rotation of Venus (*) is retrograde; for Jupiter (†) and Saturn (**), rotation periods vary with latitude, but the rotation of the interior can be measured by observation of radio emission. (Data in <> indicate estimates).
The data provided here are all from the Microsoft Encarta 97 Encyclopedia.
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