Dwarf planets · Dwarf planet

Gonggong

About 88 AU from the Sun · Light crosses it in 0.0041 seconds

Across

1,230 km

Vs Earth

9.65% of Earth

Mass

0.03% of Earth

Open Gonggong in Cosmic Scale

About

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.

Named after a Chinese water god; its surface is reddish methane-rich ice.

At a glance

Size	About 1,230 km
Orbit	About 550 years
Moon	Xiangliu
Discovered	2007

Did you know

1. It was nicknamed Snow White before it turned out to be red.
2. Its name was chosen by a public vote in 2019.
3. It is large enough that it may hold on to a thin atmosphere of methane.