|
The Moon
|
 |
|
Parent planet:
|
Earth
|
?
|
|
Radius (km):
|
1,738
|
?
|
|
Mass (x1022 kg):
|
7.35
|
?
|
|
Average density (g/cm3):
|
3.34
|
?
|
|
Reflectivity:
|
12%
|
?
|
|
Distance from planet (km):
|
384,400
|
?
|
|
Distance from planet (RP=1):
|
60.2
|
?
|
|
Orbital period (Earth days):
|
27.3217
|
?
|
|
Eccentricity:
|
0.0549
|
?
|
|
Orbital inclination (degrees):
|
18.2 to 28.6
|
?
|
|
|
|
|
Phobos
|
|
|
Parent planet:
|
Mars
|
?
|
|
Radius (km):
|
14 by 10 (not round)
|
?
|
|
Mass (x1022 kg):
|
0.00000096
|
?
|
|
Average density (g/cm3):
|
<2
|
?
|
|
Reflectivity:
|
6%
|
?
|
|
Distance from planet (km):
|
9,370
|
?
|
|
Distance from planet (RP=1):
|
2.76
|
?
|
|
Orbital period (Earth days):
|
0.3189
|
?
|
|
Eccentricity:
|
0.015
|
?
|
|
Orbital inclination (degrees):
|
1.1
|
?
|
|
|
|
|
Deimos
|
|
|
Parent planet:
|
Mars
|
?
|
|
Radius (km):
|
8 by 6 (not round)
|
?
|
|
Mass (x1022 kg):
|
0.0000002
|
?
|
|
Average density (g/cm3):
|
<2
|
?
|
|
Reflectivity:
|
7%
|
?
|
|
Distance from planet (km):
|
23,520
|
?
|
|
Distance from planet (RP=1):
|
6.9
|
?
|
|
Orbital period (Earth days):
|
1.262
|
?
|
|
Eccentricity:
|
0.0008
|
?
|
|
Orbital inclination (degrees):
|
0.9 to 2.7
|
?
|
|
|
|
|
Ganymede
|
|
|
Parent planet:
|
Jupiter
|
?
|
|
Radius (km):
|
2,631
|
?
|
|
Mass (x1022 kg):
|
14.9
|
?
|
|
Average density (g/cm3):
|
1.93
|
?
|
|
Reflectivity:
|
43%
|
?
|
|
Distance from planet (km):
|
1,070,000
|
?
|
|
Distance from planet (RP=1):
|
15.1
|
?
|
|
Orbital period (Earth days):
|
7.155
|
?
|
|
Eccentricity:
|
0.001
|
?
|
|
Orbital inclination (degrees):
|
0.2
|
?
|
|
|
|
|
Callisto
|
|
|
Parent planet:
|
Jupiter
|
?
|
|
Radius (km):
|
2,400
|
?
|
|
Mass (x1022 kg):
|
10.75
|
?
|
|
Average density (g/cm3):
|
1.83
|
?
|
|
Reflectivity:
|
17%
|
?
|
|
Distance from planet (km):
|
1,880,000
|
?
|
|
Distance from planet (RP=1):
|
26.6
|
?
|
|
Orbital period (Earth days):
|
16.69
|
?
|
|
Eccentricity:
|
0.01
|
?
|
|
Orbital inclination (degrees):
|
0.2
|
?
|
|
|
|
|
Io
|
|
|
Parent planet:
|
Jupiter
|
?
|
|
Radius (km):
|
1,815
|
?
|
|
Mass (x1022 kg):
|
8.92
|
?
|
|
Average density (g/cm3):
|
3.55
|
?
|
|
Reflectivity:
|
63%
|
?
|
|
Distance from planet (km):
|
422,000
|
?
|
|
Distance from planet (RP=1):
|
5.95
|
?
|
|
Orbital period (Earth days):
|
1.769
|
?
|
|
Eccentricity:
|
0.004
|
?
|
|
Orbital inclination (degrees):
|
0.0
|
?
|
|
|
|
|
Europa
|
|
|
Parent planet:
|
Jupiter
|
?
|
|
Radius (km):
|
1,569
|
?
|
|
Mass (x1022 kg):
|
4.87
|
?
|
|
Average density (g/cm3):
|
3.04
|
?
|
|
Reflectivity:
|
64%
|
?
|
|
Distance from planet (km):
|
671,000
|
?
|
|
Distance from planet (RP=1):
|
9.47
|
?
|
|
Orbital period (Earth days):
|
3.551
|
?
|
|
Eccentricity:
|
0.00
|
?
|
|
Orbital inclination (degrees):
|
0.5
|
?
|
|
|
|
|
Titan
|
|
|
Parent planet:
|
Saturn
|
?
|
|
Radius (km):
|
2,575
|
?
|
|
Mass (x1022 kg):
|
13.46
|
?
|
|
Average density (g/cm3):
|
1.88
|
?
|
|
Reflectivity:
|
21%
|
?
|
|
Distance from planet (km):
|
1,222,000
|
?
|
|
Distance from planet (RP=1):
|
20.3
|
?
|
|
Orbital period (Earth days):
|
15.95
|
?
|
|
Eccentricity:
|
0.029
|
?
|
|
Orbital inclination (degrees):
|
0.3
|
?
|
|
|
|
|
Rhea
|
|
|
Parent planet:
|
Saturn
|
?
|
|
Radius (km):
|
765
|
?
|
|
Mass (x1022 kg):
|
0.249
|
?
|
|
Average density (g/cm3):
|
1.33
|
?
|
|
Reflectivity:
|
60%
|
?
|
|
Distance from planet (km):
|
527,000
|
?
|
|
Distance from planet (RP=1):
|
8.73
|
?
|
|
Orbital period (Earth days):
|
4.518
|
?
|
|
Eccentricity:
|
0.001
|
?
|
|
Orbital inclination (degrees):
|
0.4
|
?
|
|
|
|
|
Iapetus
|
|
|
Parent planet:
|
Saturn
|
?
|
|
Radius (km):
|
730
|
?
|
|
Mass (x1022 kg):
|
0.188
|
?
|
|
Average density (g/cm3):
|
1.15
|
?
|
|
Reflectivity:
|
12%
|
?
|
|
Distance from planet (km):
|
3,561,000
|
?
|
|
Distance from planet (RP=1):
|
59
|
?
|
|
Orbital period (Earth days):
|
79.33
|
?
|
|
Eccentricity:
|
0.028
|
?
|
|
Orbital inclination (degrees):
|
14.7
|
?
|
|
|
|
|
Dione
|
|
|
Parent planet:
|
Saturn
|
?
|
|
Radius (km):
|
560
|
?
|
|
Mass (x1022 kg):
|
0.1052
|
?
|
|
Average density (g/cm3):
|
1.41
|
?
|
|
Reflectivity:
|
60%
|
?
|
|
Distance from planet (km):
|
377,000
|
?
|
|
Distance from planet (RP=1):
|
6.26
|
?
|
|
Orbital period (Earth days):
|
2.737
|
?
|
|
Eccentricity:
|
0.002
|
?
|
|
Orbital inclination (degrees):
|
0
|
?
|
|
|
|
|
Tethys
|
|
|
Parent planet:
|
Saturn
|
?
|
|
Radius (km):
|
530
|
?
|
|
Mass (x1022 kg):
|
0.0755
|
?
|
|
Average density (g/cm3):
|
1.2
|
?
|
|
Reflectivity:
|
80%
|
?
|
|
Distance from planet (km):
|
295,000
|
?
|
|
Distance from planet (RP=1):
|
4.88
|
?
|
|
Orbital period (Earth days):
|
1.888
|
?
|
|
Eccentricity:
|
0
|
?
|
|
Orbital inclination (degrees):
|
1.1
|
?
|
|
|
|
|
Enceladus
|
|
|
Parent planet:
|
Saturn
|
?
|
|
Radius (km):
|
250
|
?
|
|
Mass (x1022 kg):
|
0.0074
|
?
|
|
Average density (g/cm3):
|
1.13
|
?
|
|
Reflectivity:
|
100%
|
?
|
|
Distance from planet (km):
|
151,500
|
?
|
|
Distance from planet (RP=1):
|
3.95
|
?
|
|
Orbital period (Earth days):
|
1.37
|
?
|
|
Eccentricity:
|
0.004
|
?
|
|
Orbital inclination (degrees):
|
0
|
?
|
|
|
|
|
Mimas
|
|
|
Parent planet:
|
Saturn
|
?
|
|
Radius (km):
|
196
|
?
|
|
Mass (x1022 kg):
|
0.00455
|
?
|
|
Average density (g/cm3):
|
1.44
|
?
|
|
Reflectivity:
|
70%
|
?
|
|
Distance from planet (km):
|
186,000
|
?
|
|
Distance from planet (RP=1):
|
3.08
|
?
|
|
Orbital period (Earth days):
|
0.942
|
?
|
|
Eccentricity:
|
0.02
|
?
|
|
Orbital inclination (degrees):
|
1.5
|
?
|
|
|
|
|
Titania
|
|
|
Parent planet:
|
Uranus
|
?
|
|
Radius (km):
|
790
|
?
|
|
Mass (x1022 kg):
|
0.348
|
?
|
|
Average density (g/cm3):
|
1.68
|
?
|
|
Reflectivity:
|
28%
|
?
|
|
Distance from planet (km):
|
436,300
|
?
|
|
Distance from planet (RP=1):
|
17.07
|
?
|
|
Orbital period (Earth days):
|
8.704
|
?
|
|
Eccentricity:
|
0.0024
|
?
|
|
Orbital inclination (degrees):
|
0.14
|
?
|
|
|
|
|
Oberon
|
|
|
Parent planet:
|
Uranus
|
?
|
|
Radius (km):
|
762
|
?
|
|
Mass (x1022 kg):
|
0.292
|
?
|
|
Average density (g/cm3):
|
1.58
|
?
|
|
Reflectivity:
|
24%
|
?
|
|
Distance from planet (km):
|
583,400
|
?
|
|
Distance from planet (RP=1):
|
22.82
|
?
|
|
Orbital period (Earth days):
|
13.463
|
?
|
|
Eccentricity:
|
0.0007
|
?
|
|
Orbital inclination (degrees):
|
0.1
|
?
|
|
|
|
|
Umbriel
|
|
|
Parent planet:
|
Uranus
|
?
|
|
Radius (km):
|
586
|
?
|
|
Mass (x1022 kg):
|
0.127
|
?
|
|
Average density (g/cm3):
|
1.51
|
?
|
|
Reflectivity:
|
19%
|
?
|
|
Distance from planet (km):
|
266,000
|
?
|
|
Distance from planet (RP=1):
|
10.41
|
?
|
|
Orbital period (Earth days):
|
4.146
|
?
|
|
Eccentricity:
|
0.0035
|
?
|
|
Orbital inclination (degrees):
|
0.36
|
?
|
|
|
|
|
Ariel
|
|
|
Parent planet:
|
Uranus
|
?
|
|
Radius (km):
|
579
|
?
|
|
Mass (x1022 kg):
|
0.135
|
?
|
|
Average density (g/cm3):
|
1.66
|
?
|
|
Reflectivity:
|
40%
|
?
|
|
Distance from planet (km):
|
190,900
|
?
|
|
Distance from planet (RP=1):
|
7.47
|
?
|
|
Orbital period (Earth days):
|
2.521
|
?
|
|
Eccentricity:
|
0.0028
|
?
|
|
Orbital inclination (degrees):
|
0.31
|
?
|
|
|
|
|
Miranda
|
|
|
Parent planet:
|
Uranus
|
?
|
|
Radius (km):
|
236
|
?
|
|
Mass (x1022 kg):
|
0.008
|
?
|
|
Average density (g/cm3):
|
1.35
|
?
|
|
Reflectivity:
|
34%
|
?
|
|
Distance from planet (km):
|
129,900
|
?
|
|
Distance from planet (RP=1):
|
5.08
|
?
|
|
Orbital period (Earth days):
|
1.413
|
?
|
|
Eccentricity:
|
0.017
|
?
|
|
Orbital inclination (degrees):
|
3.4
|
?
|
|
|
|
|
Triton
|
|
|
Parent planet:
|
Neptune
|
?
|
|
Radius (km):
|
1,360
|
?
|
|
Mass (x1022 kg):
|
2.16
|
?
|
|
Average density (g/cm3):
|
2.05
|
?
|
|
Reflectivity:
|
70%
|
?
|
|
Distance from planet (km):
|
354,000
|
?
|
|
Distance from planet (RP=1):
|
14.6
|
?
|
|
Orbital period (Earth days):
|
5.877
|
?
|
|
Eccentricity:
|
0
|
?
|
|
Orbital inclination (degrees):
|
160
|
?
|
|
|
|
|
Nereid
|
|
|
Parent planet:
|
Neptune
|
?
|
|
Radius (km):
|
150
|
?
|
|
Mass (x1022 kg):
|
?
|
?
|
|
Average density (g/cm3):
|
?
|
?
|
|
Reflectivity:
|
14%
|
?
|
|
Distance from planet (km):
|
5,510,000
|
?
|
|
Distance from planet (RP=1):
|
227
|
?
|
|
Orbital period (Earth days):
|
365.2
|
?
|
|
Eccentricity:
|
0.75
|
?
|
|
Orbital inclination (degrees):
|
27.6
|
?
|
|
|
|
|
Charon
|
|
|
Parent planet:
|
Pluto
|
?
|
|
Radius (km):
|
560
|
?
|
|
Mass (x1022 kg):
|
0.11
|
?
|
|
Average density (g/cm3):
|
1-3
|
?
|
|
Reflectivity:
|
50%
|
?
|
|
Distance from planet (km):
|
19,130
|
?
|
|
Distance from planet (RP=1):
|
17.03
|
?
|
|
Orbital period (Earth days):
|
6.38718
|
?
|
|
Eccentricity:
|
0
|
?
|
|
Orbital inclination (degrees):
|
120
|
?
|
|
|
|