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

Solar System Exploration

Planets

2013 Webby Awards: People's Voice Winner in Science & Government

>

>

>

>

>

Facts & Figures

Umbriel: Facts & Figures

Facts & Figures

Discovered By

W. Lassell

Date of Discovery

1851

Orbit Size Around Uranus (semi-major axis)

Metric: 266,000 km

English: 165,285 miles

Periapsis (closest)

Metric: 264,963 km

Apoapsis (farthest)

Metric: 267,037 km

Sidereal Orbit Period (Length of Year)

4.144 Earth days

Orbit Circumference

Metric: 1,671,320.94 km

Average Orbit Velocity

Metric: 16,804.6 km/h

Orbit Eccentricity

0.0039

Orbit Inclination

0.128 degree

Mean Radius

Metric: 584.7 km

Equatorial Circumference

Metric: 3,673.8 km

Volume

Metric: 837,313,109 km³

Mass

Metric: 1,221,414,772,974,210,000,000 kg

Scientific Notation: 1.2214 x 10²¹ kg

Density

Metric: 1.459 g/cm³

Surface Area

Metric: 4,296,116.52 km²

Surface Gravity

Metric: 0.238 m/s²

Escape Velocity

Metric: 1,901 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/

NASA Official: Kristen Erickson

Advisory: Dr. James Green, Director of Planetary Science

Outreach Manager: Alice Wessen

>

>

>

>

>

>

>

>

>

>

>

>

>