Planets and dwarf planets of the Solar System
The eight planets and five dwarf planets: diameters, orbital periods, number of moons and today’s distances from Earth and the Sun.
Planets
| Name | Diameter | Orbital period | Moons | From Earth today | From the Sun today |
|---|---|---|---|---|---|
| Mercury terrestrial planet | 4,879 km | 88.0 days | 0 | 101.1 million km | 49.07 million km |
| Venus terrestrial planet | 12,104 km | 224.7 days | 0 | 42.17 million km | 108.2 million km |
| Earth terrestrial planet | 12,756 km | 365.2 days (1.00 years) | 1 | – | 148.5 million km |
| Mars terrestrial planet | 6,792 km | 1.88 years | 2 | 213.1 million km | 238.7 million km |
| Jupiter gas giant | 142,984 km | 11.86 years | 95 | 820.2 million km | 795.1 million km |
| Saturn gas giant | 120,536 km | 29.42 years | 274 | 1.28 billion km | 1.41 billion km |
| Uranus ice giant | 51,118 km | 83.75 years | 28 | 2.77 billion km | 2.91 billion km |
| Neptune ice giant | 49,528 km | 163.7 years | 16 | 4.35 billion km | 4.47 billion km |
Dwarf planets
| Name | Diameter | Orbital period | Moons | From Earth today | From the Sun today |
|---|---|---|---|---|---|
| Ceres dwarf planet (asteroid belt) | 939 km | 4.60 years | 0 | 326.5 million km | 398.0 million km |
| Pluto Kuiper belt dwarf planet | 2,376 km | 247.9 years | 5 | 5.35 billion km | 5.33 billion km |
| Haumea Kuiper belt dwarf planet | – | 282.9 years | 2 | 7.58 billion km | 7.45 billion km |
| Makemake Kuiper belt dwarf planet | – | 308.0 years | 0 | 8.00 billion km | 7.88 billion km |
| Eris scattered-disc dwarf planet | – | 559.5 years | 1 | 14.16 billion km | 14.30 billion km |
Diameters, periods and number of moons: NASA Planetary Fact Sheet and JPL SBDB. Distances for 2 November 2026 from JPL orbital elements.