Cosmic Scale
Gonggong
Dwarf planet · About 88 AU from the Sun
How big is Gonggong?
Gonggong is about 1,230 km across.
See Gonggong in 3D, at true scale
Gonggong is one of the largest dwarf planets, a reddish world of ice on a long, tilted orbit far beyond Neptune. It turns slowly and has one known moon, Xiangliu.
At a glance
| Diameter | 1,230 km |
|---|---|
| Mass | 1.75 × 10²¹ kg |
| Diameter compared with Earth | 0.097 × Earth |
| Size | About 1,230 km |
| Orbit | About 550 years |
| Moon | Xiangliu |
| Discovered | 2007 |
Good to know
- It was nicknamed Snow White before it turned out to be red.
- Its name was chosen by a public vote in 2019.
- It is large enough that it may hold on to a thin atmosphere of methane.