In the Solar System · tracked live
Eris
The dwarf planet that cost Pluto its title: found in 2005, almost exactly Pluto's size and 27% more massive, which made it impossible to keep calling one of them a planet and not the other. It is currently about 96 AU out, three times Neptune's distance, on an orbit tilted 44° to everything else here. Its surface is nitrogen and methane ice, and its moon Dysnomia is what the mass was measured from.
- Radius
- 1,163 km
- Around the equator
- 7,307 km
- Mass
- 1.64 x 10^22 kg
- Compared with the Earth
- 0.003 ×
- From the Sun
- 14,279,843,088 km (-37,120 km/d)
- From the Earth
- 14,133,693,116 km (-212,037 km/d)
- A signal takes
- 13 h 6 m
Distances and speed are computed from JPL Horizons trajectories and are true of the date below, changing at the rate beside each.
Everything the map shows is worked out in your browser from published orbital data - nothing on it is a stored picture of where things were.