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| − | '' | + | '''Oberon''' is the second largest and second most massive [[natural satellite]] of [[Uranus]]. It is one of the five satellites discovered prior to the Voyager 2 encounter of January 1986. It is named after a character from William Shakespeare's ''A Midsummer Night's Dream''. |
Oberon has a radius of 761.4km. Its surface gravity is 0.349m/s^2, 0.036 that of Earth. A [[Surface Orbit|surface orbit]] has a speed of 515m/s, and the [[Escape Velocity|escape velocity]] is 729m/s. A surface orbit has a [[Orbital Period|period]] of 9283s (about 2 hours 35 minutes). | Oberon has a radius of 761.4km. Its surface gravity is 0.349m/s^2, 0.036 that of Earth. A [[Surface Orbit|surface orbit]] has a speed of 515m/s, and the [[Escape Velocity|escape velocity]] is 729m/s. A surface orbit has a [[Orbital Period|period]] of 9283s (about 2 hours 35 minutes). | ||
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Like all the satellites of Uranus, Oberon's axis is tilted 98° relative to the ecliptic plane. It is locked in synchronous rotation, like the Earth's moon. When Voyager flew past, Uranus and all its satellites were near their southern summer [[solstice]], and in this case it means that only the southern hemispheres were visible. As a consequence, only the southern hemisphere of Oberon has been mapped in any detail. | Like all the satellites of Uranus, Oberon's axis is tilted 98° relative to the ecliptic plane. It is locked in synchronous rotation, like the Earth's moon. When Voyager flew past, Uranus and all its satellites were near their southern summer [[solstice]], and in this case it means that only the southern hemispheres were visible. As a consequence, only the southern hemisphere of Oberon has been mapped in any detail. | ||
| − | Oberon | + | Oberon is a satellite included in the Orbiter base installation. It has no bases on its surface. |
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{{UranusSat}} | {{UranusSat}} | ||
| − | {{ | + | {{Nsat-Stub}} |
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