Solar System Exploration: Planets: Uranus: Moons: Ariel: Facts & Figures

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Facts & Figures

Ariel: Facts & Figures

Facts & Figures

Discovered By

William Lassell

Date of Discovery

24 October 1851

Orbit Size Around Uranus (semi-major axis)

Metric: 190,900 km

English: 118,620 miles

Scientific Notation: 1.909 x 10⁵ km (1.276 x 10^-3 A.U.)

Periapsis (closest)

Metric: 190,671 km

Apoapsis (farthest)

Metric: 191,129 km

Sidereal Orbit Period (Length of Year)

0.006899384 Earth years

2.52 Earth days

Orbit Circumference

Metric: 1,199,459.64 km

Average Orbit Velocity

Metric: 19,832.3 km/h

Orbit Eccentricity

0.0012

Orbit Inclination

0.041 degree

Mean Radius

Metric: 578.9 km

English: 359.7 miles

Scientific Notation: 5.789 x 10² km

Equatorial Circumference

Metric: 3,637.3 km

Volume

Metric: 812,641,988 km³

Mass

Metric: 1,294,849,526,195,970,000,000 kg

Scientific Notation: 1.2948 x 10²¹ kg

Density

Metric: 1.592 g/cm³

Surface Area

Metric: 4,211,307.59 km²

Surface Gravity

Metric: 0.258 m/s²

Escape Velocity

Metric: 1,967 km/h

Rotation Period (Length of Day)

By Comparison: Synchronous with Uranus

Additional Information:

-USGS Astrogeology: Gazetteer of Planetary Nomenclature: http://planetarynames.wr.usgs.gov/append7.html

-JPL Solar System Dynamics: http://ssd.jpl.nasa.gov/

-"Encyclopedia of the Solar System," second edition, edited by Lucy-Ann McFadden, Paul R. Weissman, and Torrence V. Johnson; Academic Press 2007

-United States Geological Survey: Ariel: http://astrogeology.usgs.gov/Projects/BrowseTheGeologicSolarSystem/ArielBack.html

-Dr. Ellis Miner, retired planetary scientist, Jet Propulsion Laboratory

NASA Official: Kristen Erickson

Advisory: Dr. James Green, Director of Planetary Science

Outreach Manager: Alice Wessen

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