Dwarf Planet
Gonggong
One of the reddest and slowest-rotating large trans-Neptunian objects, coated in water ice and tholins. It follows a steeply inclined scattered-disc orbit swinging between 34 and 101 AU.
| Type | Dwarf Planet |
|---|---|
| Parent body | Sun |
| Radius | 615 km · 0.0965 R⊕ |
| Mass | 1.750 × 10²¹ kg · 2.93 × 10⁻⁴ M⊕ |
| Mean density | 1.8 g/cm³ |
| Surface gravity | 0.309 m/s² · 0.031 × Earth |
| Escape velocity | 0.616 km/s |
| Rotation period | 22.4 hours |
| Orbital radius | 67.4 AU (Sun) |
| Eccentricity | 0.499 |
| Orbital period | 553 years |
| Discovery | 2007, Schwamb, Brown, Rabinowitz |
| Moon | Xiangliu |
| Name | Chinese water god |