Solar System Moons
Solar system moons, their parent planets, diameters in kilometers, and discovery years.
Download optionsThe records
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 |
Free sample files (up to 10 rows): CSV JSON XML
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)
A complete download includes all 46 records currently held in this dataset. Check the description and sources to decide whether its scope fits your project.
Use this dataset through the API
GET https://mysafeinfo.com/api/data/solarsystemmoonsChoose a format, sort, or request fewer rows. A pass key gives access to the complete dataset. See the examples and parameters.
Without a pass, sorting and randomization apply only to the fixed 10-row sample.