Saturday, January 14, 2012

Characteristics of the Planets


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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