Cosmic Scale
Oberon
Moon of Uranus · 583,520 km from Uranus
How big is Oberon?
Oberon is about 1,523 km across.
See Oberon in 3D, at true scale
Oberon is the outermost of Uranus's large moons, an old, cratered world of ice and rock. Many of its craters have dark floors, perhaps where darker material welled up from below.
At a glance
| Diameter | 1,523 km |
|---|---|
| Mass | 3.08 × 10²¹ kg |
| Diameter compared with Earth | 0.120 × Earth |
| Size | 1,523 km |
| Orbits | Uranus, every 13.5 days |
| Discovered | 1787, William Herschel |
| Visited | Voyager 2, 1986 |
Good to know
- It has a mountain about 11 km high.
- Its moons, like Uranus, are named after characters from Shakespeare and Pope.
- Only about 40% of its surface has been photographed.