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The Top 5 Largest Planetary Moons
| Moon | Diameter Km (diameter miles) |
Planet Orbited | Discovered By (year) |
|
|---|---|---|---|---|
| 1 | Ganymede | 5,262 km (3,269 mi) |
Jupiter | Galileo Galilei, (1610) |
| 2 | Titan | 5,150 km (3,200 mi) |
Saturn | Christian Huygens, (1655) |
| 3 | Callisto | 4,806 km (2,986 mi) |
Jupiter | Galileo Galilei, (1610) |
| 4 | Lo | 3,642 km (2,263 mi) |
Jupiter | Galileo Galilei, (1610) |
| 5 | The Moon | 3,476 km (2,159 mi) |
Earth | Ancient Observer, (unknown) |
Special Report
List is ranked by diameter.
