Why is Umbriel dark?

Why is Umbriel dark?

Size, Mass and Orbit: It also means that though Umbriel is the third largest moon of Uranus, it is only the fourth largest in terms of mass. Furthermore, its dark appearance is believed to be the result of the interactions of surface water ice with energetic particles from Uranus’ magnetosphere.

How long does it take Umbriel to orbit Uranus?

4.144 days
The bright ring near the moon’s equator (at the top of the image), dubbed Wunda, is an enigmatic feature that appears to line the floor of an impact crater. It orbits Uranus once every 4.144 days at a mean distance of 265,970 km (165,270 miles).

Is Umbriel a planet?

Umbriel /ˈʌmbriəl/ is a moon of Uranus discovered on October 24, 1851, by William Lassell….Umbriel (moon)

Discovery
Physical characteristics
Mean radius 584.7±2.8 km (0.092 Earths)
Surface area 4296000 km2 (0.008 Earths)
Volume 837300000 km3 (0.0008 Earths)

What is the composition of Umbriel?

As with all of Uranus’ moons, Umbriel is believed to be composed of about 50% water ice and 50% rocky material. This composition is very similar to Saturn’s moon, Rhea, but with a larger percentage of rock. Umbriel is about the same size as Ariel and has nearly the same density.

Can umbriel sustain life?

Umbriel is the smallest celestial body in the Solar System which has a mass enough to hold an atmosphere for 1000 years and is close enough to the Sun to sustain plant life.

When was umbriel found?

October 24, 1851
Umbriel/Discovered

When was umbriel discovered?

Can Umbriel sustain life?

When was Umbriel discovered?

How long is a day on Umbriel?

about four Earth days
How long is a day on Umbriel? Edit. One day on Umbriel is equal to about four Earth days.

Where did umbriel go?

Umbriel arrived at Vivec City, and the zombies captured both Attrebus and Sul. They talked to Vuhon, who revealed them that he was now heading to the Imperial City.