| |
JUPITER
|
SATURN
|
URANUS
|
NEPTUNE
|
Mass
(Earth=1) |
318
|
95
|
14.5
|
17
|
| Equatorial radius (Earth=1) |
11.2
|
9.5
|
4.0
|
3.9
|
Equatorial radius
(km) |
71,492
|
60,268
|
25,559
|
24,764
|
| Ellipticity |
0.0649
|
0.0980
|
0.0229
|
0.017
|
Mean density
(g/cm3) |
1.33
|
0.69
|
1.29
|
1.64
|
| Equatorial surface gravity (m/s2) |
22.88
|
9.05
|
7.77
|
11.0
|
| Equatorial escape velocity (km/s) |
59.6
|
35.5
|
21.3
|
23.3
|
| Sidereal rotation period |
9.841 h
|
10.233 h
|
17.9 h
|
19.2 h
|
| Inclination of equator to orbit |
3°.1
|
26°.7
|
97°.9
|
29°.6
|
| Characteristics
of the giant planet orbits. |
| |
| Mean distance from Sun |
| (AU) |
(106 km) |
|
| Siderial period |
| (years) |
(days) |
|
Synodic period (days) |
Mean orbital velocity (km/s) |
Orbital eccentricity |
Incli-
nation to ecliptic (degrees) |
| EARTH |
1.0000
|
149.60
|
1.00004
|
365.256
|
- |
29.79
|
0.0167
|
0.000
|
| MARS |
1.5237
|
227.94
|
1.88089
|
686.980
|
779.94
|
24.13
|
0.0934
|
1.850
|
| JUPITER |
5.2028
|
778.33
|
11.8623
|
4,332.71
|
398.88
|
13.06
|
0.0483
|
1.308
|
| SATURN |
9.5388
|
1,426.98
|
29.458
|
10,759.5
|
378.09
|
9.64
|
0.0560
|
2.488
|
| URANUS |
19.1914
|
2,870.99
|
84.01
|
30,685
|
369.66
|
6.81
|
0.0461
|
0.774
|
| NEPTUNE |
30.0611
|
4,497.07
|
164.79
|
60,190
|
367.49
|
5.43
|
0.0097
|
1.774
|
| PLUTO |
39.5294
|
5,913.52
|
248.54
|
90,800
|
366.73
|
4.74
|
0.2482
|
17.148
|
The data in this table are taken with
permission from The New Solar System (3rd edition), edited by J.
Kelly Beatty and Andrew Chaikin, Cambridge University Press and Sky Publishing
Corp., 1990 © Sky Publishing Corp. |