Map of the Universe
Umbriel
Moon · Moon of Uranus
About Umbriel
On 2026-01-01, the date the map shows, Umbriel was 19.5 AU from the Sun; sunlight takes 2.7 hours to reach it.
It goes round its planet once every 4.14 days, 266,006 km away on average.
It is about 1,169 km across.
The map lists it as a moon and shows it in the Solar System part of the map, drawn on the plane of Earth’s orbit (the ecliptic).
Key numbers
| Orbit radius (semi-major axis) | 266,006 km |
|---|---|
| Orbital period | 4.14 days |
| Eccentricity | 0.0042 |
| Inclination | 97.71° |
| Radius | 584.7 km |
| Distance from the Sun | 19.5 AU |
Where it is
Its place in the universe, from the inside out: Uranus › Solar System › Orion–Cygnus Arm (Local Arm) › Milky Way › Local Group › Virgo Supercluster › Laniakea Supercluster › Observable universe.
Zoom out to see it in context: Neptune and the Kuiper belt, a view about 110 AU across.
From Wikipedia
Umbriel is the third-largest moon of Uranus. It was discovered on October 24, 1851, by William Lassell at the same time as neighboring moon Ariel. It was named after a character in Alexander Pope's 1712 poem The Rape of the Lock.
Excerpt from the Wikipedia article Umbriel, licensed CC BY-SA 4.0.