Characteristics of the Planets
|
Characteristic
|
Mercury
|
Venus
|
Earth
|
Mars
|
Jupiter
|
Saturn
|
Uranus
|
Neptune
|
Pluto*
|
|
Equatorial radius (Earth radii†)
|
0.3825
|
0.9488
|
1
|
0.5325
|
11.21
|
9.449
|
4.007
|
3.883
|
0.1874
|
|
Equatorial inclination (degrees)
|
0.01
|
2.64
|
23.5
|
25.2
|
3.13
|
26.7
|
82.2
|
28.3
|
57.4
|
|
Mass (Earth masses‡)
|
0.0553
|
0.8150
|
1
|
0.1074
|
317.8
|
95.16
|
14.54
|
17.15
|
0.0023
|
|
Average density (g/cm3)
|
5.4
|
5.2
|
5.5
|
3.9
|
1.3
|
0.69
|
1.3
|
1.6
|
1.8
|
|
Rotational period (days)
|
58.6
|
-243
|
1
|
1.03
|
0.414
|
0.444
|
-0.718
|
0.671
|
-6.4
|
|
Orbital period (years)
|
0.2408
|
0.6152
|
1
|
1.881
|
11.86
|
29.46
|
84.01
|
164.8
|
247.9
|
|
Average distance from the Sun (AUs)
|
0.3871
|
0.7233
|
1
|
1.524
|
5.203
|
9.59
|
19.10
|
30
|
39.30
|
|
Orbital eccentricity (ratio)
|
0.206
|
0.00674
|
0.0167
|
0.0935
|
0.0489
|
0.0576
|
0.0497
|
0.00995
|
0.248
|
|
Orbital inclination (degrees)
|
7
|
3.39
|
0.0003
|
1.85
|
1.30
|
2.49
|
0.772
|
1.77
|
17.2
|
|
Moons (number)
|
0
|
0
|
1
|
2
|
63
|
60
|
27
|
13
|
3
|
|
*Reclassified as a dwarf planet by the
International Astronomical Union in 2006
†Planet's radius expressed as a multiple of Earth's radius (6,378 km) ‡Planet's mass expressed as a multiple of Earth's mass (5.974×1024 kg) |
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