The Virtual
Solar System
Datastore
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Planet
Principal moons
Mercury
None
Venus
None
Earth
The Moon
Mars
Phobos and Deimos
Jupiter
Ganymede , Callisto , Io and Europa
Saturn
Titan , Rhea , Iapetus , Dione , Tethys , Enceladus and Mimas
Uranus
Titania , Oberon , Umbriel , Ariel and Miranda
Neptune
Triton and Nereid
Pluto
Charon
Mercury
Radius at equator (km):
2,439
?
Radius (Earth = 1):
0.382
?
Mass (x1022 kg):
33.022
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Average density (g/cm3 ):
5.43
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Rotation period:
58.6462 Earth days
?
Temperature (�C):
-173 to 427
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Escape velocity (km/s):
4.25
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Tilt of rotation (degrees):
7
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Distance from Sun (A.U.):
0.387099
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Distance from Sun (million km):
57.9
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Length of year (Earth days):
87.969
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Average orbital velocity (km/s):
47.89
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Eccentricity:
0.2056
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Orbital inclination (degrees):
7
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Satellites:
None
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Venus
Radius at equator (km):
6,051
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Radius (Earth = 1):
0.949
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Mass (x1022 kg):
486.9
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Average density (g/cm3 ):
5.25
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Rotation period:
243.01 Earth days (backwards)
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Temperature (�C):
456
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Escape velocity (km/s):
10.36
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Tilt of rotation (degrees):
177.4
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Distance from Sun (A.U.):
0.723332
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Distance from Sun (million km):
108.2
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Length of year (Earth days):
224.701
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Average orbital velocity (km/s):
35.03
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Eccentricity:
0.0068
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Orbital inclination (degrees):
3.39
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Satellites:
None
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Earth
Radius at equator (km):
6,378.14
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Radius (Earth = 1):
1
?
Mass (x1022 kg):
597.42
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Average density (g/cm3 ):
5.52
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Rotation period:
23 hrs, 56 mins, 4.099 secs
?
Temperature (�C):
14.8 to 24.8
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Escape velocity (km/s):
11.18
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Tilt of rotation (degrees):
23.45
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Distance from Sun (A.U.):
1
?
Distance from Sun (million km):
149.6
?
Length of year (Earth days):
365.256
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Average orbital velocity (km/s):
29.79
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Eccentricity:
0.0167
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Orbital inclination (degrees):
0
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Satellites:
One. The Moon
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Mars
Radius at equator (km):
3,397
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Radius (Earth = 1):
0.533
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Mass (x1022 kg):
64.191
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Average density (g/cm3 ):
3.93
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Rotation period:
24 hrs, 37 mins, 22.66 secs
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Temperature (�C):
-90.2 to -5.16
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Escape velocity (km/s):
5.02
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Tilt of rotation (degrees):
23.98
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Distance from Sun (A.U.):
1.523688
?
Distance from Sun (million km):
227.9
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Length of year (Earth days):
686.98
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Average orbital velocity (km/s):
24.13
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Eccentricity:
0.0933
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Orbital inclination (degrees):
1.85
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Satellites:
Two. Phobos and Deimos
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Jupiter
Radius at equator (km):
71,492
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Radius (Earth = 1):
11.19
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Mass (x1022 kg):
189,920
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Average density (g/cm3 ):
1.33
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Rotation period:
9 hrs, 55 mins, 29.7 secs
?
Temperature (�C):
-149
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Escape velocity (km/s):
59.54
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Tilt of rotation (degrees):
3.08
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Distance from Sun (A.U.):
5.202833481
?
Distance from Sun (million km):
778.3
?
Length of year (Earth days):
4,332.59
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Average orbital velocity (km/s):
13.06
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Eccentricity:
0.048
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Orbital inclination (degrees):
1.31
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Satellites:
Sixteen. Data on: Ganymede , Callisto , Io and Europa
?
Saturn
Radius at equator (km):
60,268
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Radius (Earth = 1):
9.46
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Mass (x1022 kg):
56,865
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Average density (g/cm3 ):
0.71
?
Rotation period:
10 hrs, 39 mins, 22.4 secs
?
Temperature (�C):
-178
?
Escape velocity (km/s):
35.49
?
Tilt of rotation (degrees):
26.73
?
Distance from Sun (A.U.):
9.538762055
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Distance from Sun (million km):
1,427.00
?
Length of year (Earth days):
10,759.22
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Average orbital velocity (km/s):
9.64
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Eccentricity:
0.056
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Orbital inclination (degrees):
2.49
?
Satellites:
Seventeen. Data on: Titan , Rhea , Iapetus , Dione , Tethys , Enceladus and Mimas
?
Uranus
Radius at equator (km):
25,559
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Radius (Earth = 1):
3.98
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Mass (x1022 kg):
8,684.90
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Average density (g/cm3 ):
1.24
?
Rotation period:
17.24 hours
?
Temperature (�C):
-215
?
Escape velocity (km/s):
21.29
?
Tilt of rotation (degrees):
97.92
?
Distance from Sun (A.U.):
19.19139128
?
Distance from Sun (million km):
2,869.60
?
Length of year (Earth days):
30,685.40
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Average orbital velocity (km/s):
6.81
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Eccentricity:
0.046
?
Orbital inclination (degrees):
0.77
?
Satellites:
Fifteen. Data on: Titania , Oberon , Umbriel , Ariel and Miranda
?
Neptune
Radius at equator (km):
24,760
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Radius (Earth = 1):
3.81
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Mass (x1022 kg):
10,235
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Average density (g/cm3 ):
1.67
?
Rotation period:
13-17 hours
?
Temperature (�C):
-218
?
Escape velocity (km/s):
23.71
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Tilt of rotation (degrees):
28.8
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Distance from Sun (A.U.):
30.06106906
?
Distance from Sun (million km):
4,496.60
?
Length of year (Earth days):
60,189
?
Average orbital velocity (km/s):
5.43
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Eccentricity:
0.01
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Orbital inclination (degrees):
1.77
?
Satellites:
Eight. Data on: Triton and Nereid
?
Pluto
Radius at equator (km):
1,123
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Radius (Earth = 1):
0.176
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Mass (x1022 kg):
1.36
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Average density (g/cm3 ):
1.89 to 2.14
?
Rotation period:
6.38718 days
?
Temperature (�C):
-233 to -213
?
Escape velocity (km/s):
1.27
?
Tilt of rotation (degrees):
>50
?
Distance from Sun (A.U.):
39.52940243
?
Distance from Sun (million km):
5,900
?
Length of year (Earth days):
90,465
?
Average orbital velocity (km/s):
4.74
?
Eccentricity:
0.248
?
Orbital inclination (degrees):
17.15
?
Satellites:
One. Charon
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