Dwarf planet
Sedna
Sedna is a dwarf planet far beyond Neptune.
One lap of the Sun takes it about 11 400 years, and even at its closest it is more than twice as far out as Neptune.
See it live
Where it is right now is on the live 3D map.
Key facts
- Catalogue
- 90377 Sedna
- Diameter
- 906 km
- One lap of the Sun
- 12 679 years
- Closest to the Sun
- 76.18 au
- Farthest from the Sun
- 1 011.3 au
How the map draws it
Drawn as a plain round body of its measured size — the kind of thing, not this exact one.