| Planet | Diameter (km) | Distance from Sun (million km) | Number of Moons | Solid/gas |
|---|---|---|---|---|
| Mercury | 4,879 | 57.9 | 0 | solid |
| Venus | 12,104 | 108.2 | 0 | solid |
| Earth | 12,742 | 149.6 | 1 | solid |
| Mars | 6,779 | 227.9 | 2 | solid |
| Jupiter | 139,820 | 778.5 | 79 | gas |
| Saturn | 116,460 | 1,433.5 | 83 | gas |
| Uranus | 50,724 | 2,872.5 | 27 | gas |
| Neptune | 49,244 | 4,495.1 | 14 | gas |