Space · Moons
Ferdinand
A moon of Uranus — Uranus's outermost known moon — the most distant Uranian satellite.
Quick facts
Parent planet
Diameter (mean)
20 km
Mass
5.4 × 10¹⁵ kg
7.4e-08 Moon masses
Mean orbital radius
20,901,000 km
Orbital period
2823.4 Earth days
Discovery year
2001
Discoverer
Matthew J. Holman et al.
Naming origin
Prince of Naples in The Tempest
Surface conditions
Ferdinand is the outermost known moon of Uranus, orbiting at nearly 21 million km in a retrograde orbit.
Missions and observations
Every Uranus-system mission has had an opportunity to image or characterize Ferdinand. The list below is the Uranus-system mission catalog; specific Ferdinand encounters are documented in mission archives.
| Mission | Year at Uranus | Status |
|---|---|---|
|
Voyager 2 NASA |
1986 | Completed |
Naming etymology
Ferdinand was the Prince of Naples in Shakespeare's The Tempest, who falls in love with Miranda. Adopted by the IAU in 2003.
Methodology & sources
Diameter, mass, and orbital parameters from JPL Solar System Dynamics — Physical Parameters. Discovery year and discoverer from the JPL Satellite Discovery Circumstances. Naming etymology from the IAU Working Group for Planetary System Nomenclature. Stylized SVG hero composed from NASA / JPL imagery as visual reference; no photographs are reproduced.