Science & Nature · Reference dataset
Solar System Moons
Solar system moons, their parent planets, diameters in kilometers, and discovery years.
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The 10 most recently added of 46 records · Select a column heading to sort.
| ID | Moon name | Planet | Diameter km | Discovery year |
|---|---|---|---|---|
| 37 | Thalassa | Neptune | 80 | 1989 |
| 38 | Despina | Neptune | 148 | 1989 |
| 39 | Galatea | Neptune | 158 | 1989 |
| 40 | Larissa | Neptune | 192 | 1981 |
| 41 | Proteus | Neptune | 416 | 1989 |
| 42 | Charon | Pluto | 1212 | 1978 |
| 43 | Nix | Pluto | 36 | 2005 |
| 44 | Hydra | Pluto | 37 | 2005 |
| 45 | Kerberos | Pluto | 12 | 2011 |
| 46 | Styx | Pluto | 10 | 2012 |
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Scope and sources
Last checked against sources: October 15, 2026.
Last changed: July 19, 2026. This is when we last changed the data or its description. It doesn’t mean the data runs up to that date.
- NASA JPL Solar System Dynamics, Planetary Satellite Physical Parameters (used with permission)
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