| Planet (or Dwarf 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 °C °F) |
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 (5.5% Earth) |
3,031 miles 4,878 km |
5-13 arc seconds | 100-700 K mean=452 K -173 to 427°C (-279.4 to 800.6°F) |
0 |
| Venus | 0.723 AU 67.2 million miles 108.2 million km |
224.68 Earth days | 243 Earth days (retrograde) |
4.87 x 1024 (81.5% Earth) |
7,521 miles 12,104 km |
10-64 arc seconds | 726 K 462 °C (863.6 °F) |
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 -88 to 58°C (-126.4 to 136.4°F) |
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 (10.7% Earth) |
4,222 miles 6,787 km |
4-25 arc seconds | 150-310 K -153 to 20 °C (-243.4 to 68 °F) |
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 (318 Earths) |
88,729 miles 142,796 km |
31-48 arc seconds | 120 K (cloud tops) -148 °C (-234.4 °F) |
95 |
| 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 (95 Earths) |
74,600 miles 120,660 km |
15-21 arc seconds excluding rings |
88 K -178 °C (-288.4 °F) |
274 |
| Uranus | 19.18 AU 1,784.0 million miles 2,871.0 million km |
84.07 Earth years | 17.9 Earth hours (retrograde) |
8.68 x 1025 (15 Earths) |
32,600 miles 51,118 km |
3-4 arc seconds | 59 K -216 °C (-356.8 °F) |
28 |
| 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 (17 Earths) |
30,200 miles 48,600 km |
2.5 arc seconds | 48 K -214 °C (-353.2 °F) |
16 |
| Pluto (a dwarf planet) | 39.53 AU 3,674.5 million miles 5,913 million km |
247.7 Earth years | 6.39 Earth days (retrograde) |
1.29 x 1022 (0.17 Moons) |
1,413 miles 2,274 km |
0.04 arc seconds | 37 K -229°C (-380.2 °F) |
5 |
| Planet (or Dwarf 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 °C °F) |
Number of Moons |