Do you know??
A natural satellite
is a natural object that goes around (orbits)
a planet.
It is usually called a moon and is large and ball-shaped. The Earth
has only one moon. Some other planets have many moons, and some have none.
The Planets in Our Solar System and their natural satellites
Planet (or Dwarf Planet)
|
Period of Revolution Around the
Sun
(1 planetary year) |
Period of Rotation
(1 planetary day) |
Mass
(kg) |
Diameter
(miles km) |
Number of natural satellites
|
Mercury
|
87.96
Earth days
|
58.7
Earth days
|
3.3
x 1023
|
3,031
miles
4,878 km |
0
|
Venus
|
224.68
Earth days
|
243
Earth days
|
4.87
x 1024
|
7,521
miles
12,104 km |
0
|
Earth
|
365.26
days
|
24
hours
|
5.98
x 1024
|
7,926
miles
12,756 km |
1
|
Mars
|
686.98
Earth days
|
24.6
Earth hours
=1.026 Earth days |
6.42
x 1023
|
4,222
miles
6,787 km |
2
|
Jupiter
|
11.862
Earth years
|
9.84
Earth hours
|
1.90
x 1027
|
88,729
miles
142,796 km |
18
named (plus many smaller ones)
|
Saturn
|
29.456
Earth years
|
10.2
Earth hours
|
5.69
x 1026
|
74,600
miles
120,660 km |
18+
|
Uranus
|
84.07
Earth years
|
17.9
Earth hours
|
8.68
x 1025
|
32,600
miles
51,118 km |
15
|
Neptune
|
164.81
Earth years
|
19.1
Earth hours
|
1.02
x 1026
|
30,200
miles
48,600 km |
2
|
Pluto (a dwarf planet)
|
247.7
years
|
6.39
Earth days
|
1.29
x 1022
|
1,413
miles
2,274 km |
4
|
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