The Planets in Our Solar System

Planet

Distance from the Sun
(Astronomical Units
miles
km)

Period of Revolution Around the Sun
(1 planetary year)

Period of Rotation
(1 planetary day)

Mass
(kg)

Diameter
(miles
km)

Apparent size
from Earth

Temperature
(K
Range or Average)

Number of Moons

Mercury

0.39 AU, 36 million miles
57.9 million km

87.96 Earth days

58.7 Earth days

3.3 x 1023

3,031 miles
4,878 km

5-13 arc seconds

100-700 K
mean=452 K

0

Venus

0.723 AU
67.2 million miles
108.2 million km

224.68 Earth days

243 Earth days

4.87 x 1024

7,521 miles
12,104 km

10-64 arc seconds

726 K

0

Earth

1 AU
93 million miles
149.6 million km

365.26 days

24 hours

5.98 x 1024

7,926 miles
12,756 km

Not Applicable

260-310 K

1

Mars

1.524 AU
141.6 million miles
227.9 million km

686.98 Earth days

24.6 Earth hours
=1.026 Earth days

6.42 x 1023

4,222 miles
6,787 km

4-25 arc seconds

150-310 K

2

Jupiter

5.203 AU
483.6 million miles
778.3 million km

11.862 Earth years

9.84 Earth hours

1.90 x 1027

88,729 miles
142,796 km

31-48 arc seconds

120 K
(cloud tops)

18 named (plus many smaller ones)

Saturn

9.539 AU
886.7 million miles
1,427.0 million km

29.456 Earth years

10.2 Earth hours

5.69 x 1026

74,600 miles
120,660 km

15-21 arc seconds
excluding rings

88 K

18+

Uranus

19.18 AU
1,784.0 million miles
2,871.0 million km

84.07 Earth years

17.9 Earth hours

8.68 x 1025

32,600 miles
51,118 km

3-4 arc seconds

59 K

15

Neptune

30.06 AU
2,794.4 million miles
4,497.1 million km

164.81 Earth years

19.1 Earth hours

1.02 x 1026

30,200 miles
48,600 km

2.5 arc seconds

48 K

2

Pluto (a dwarf planet)

39.53 AU
3,674.5 million miles
5,913 million km

247.7 years

6.39 Earth days

1.29 x 1022

1,413 miles
2,274 km

0.04 arc seconds

37 K

1 large (plus 2 tiny)

Planet

Distance from the Sun
(Astronomical Units
miles
km)

Period of Revolution Around the Sun
(1 planetary year)

Period of Rotation
(1 planetary day)

Mass
(kg)

Diameter
(miles
km)

Apparent size
from Earth

Temperature
(K
Range or Average)

Number of Moons