Image: Wikimedia Commons

Ariel

Fourth-largest moon of Uranus

Also known as Uranus I · Ariel (moon)

Orbits: Uranus
Mass: 1.353 yottagram
1
Sources
1.dx.doi.org/10.1086%2F116211
View statement on Wikidata ↗
Radius: 578.9 km
1
Sources
1.Stated in NASA FACTSssd.jpl.nasa.gov/?sat_phys_par
View statement on Wikidata ↗
Orbital period: 2.52 days
Semi-major axis: 191,020 km
Discovered by: William Lassell
Discovered: October 24, 1851

Overview

From Wikipedia, the free encyclopedia · Read full article · Text CC BY-SA 4.0

Ariel is the fourth-largest moon of Uranus. Ariel orbits and rotates in Uranus's equatorial plane, which is almost perpendicular to the planet's orbit, giving the moon an extreme seasonal cycle.

Overview

All data

38 statements · 21% with external sources · numbers in brackets are citations

Named after: Ariel
Members / parts: Pixie Chasma
Eccentricity: 0.0012
Apparent magnitude: 14.4 astronomical filter: V band
Inclination: 0.26 degree
Albedo: 0.39
1
Sources
1.Stated in NASA FACTSssd.jpl.nasa.gov/?sat_phys_par
View statement on Wikidata ↗
Temperature: 60 K sourcing circumstances: mean
84 K sourcing circumstances: maximum
Density: 1.592 g/cm³
1
Sources
1.Stated in NASA FACTSweb.archive.org/web/20141129011658/http://solarsystem.nasa.gov/planets/profile.cfm?Object=Ura_Ariel&Display=Facts
View statement on Wikidata ↗
Diameter: 1,156 km

On other databases

19 identifiers linking Ariel across the web's reference databases

Data quality

statements

21%

externally sourced

Source last edited September 5, 2026. AIDB refreshes this page daily.

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AIDB. (2026). Ariel (Q3343). Retrieved from https://aidb.si/e/ariel-Q3343