dwarf planet
Eris
A massive dwarf planet on a distant tilted orbit.
Eris helped trigger the modern definition of a planet and spends most of its orbit far beyond Pluto.
- Orbit representation
- verified fallback
- Surface
- procedural reconstruction
Reference measurements
The numbers that shape this world
- Mean radius
- 1,163 km
- Semi-major axis
- 67.78 AU
- Orbital period
- 558.023 Earth yearsKeplerian estimate from the catalogued semi-major axis.
- Eccentricity
- 0.441
- Inclination
- 44.04°
- Visual geometry
- sphere
Orbital character
An orbit lifted well beyond the planetary plane
Eris follows a catalogued path with a 67.78 AU semi-major axis, eccentricity 0.441, and 44.04° inclination. The resulting two-body period estimate is 558.023 Earth years; the representation notes below state the source epoch and precision boundary used by Explore.
Catalogue context
Eris among its nearest Helios peers
Eris is linked with Pluto, Haumea, Makemake, Quaoar, Gonggong, Sedna, Orcus inside the Helios outer-system selection. The grouping keeps adjacent reading coherent; it does not imply that these bodies share the same composition, origin, or present physical state.
Representation notes
What Explore is showing
A bundled frozen six-element preview preserves the documented body scope. It was not freshly re-fetched from SBDB in this build environment and must not be presented as an accurate or current ephemeris.
Reference-guided visual reconstruction based on cited mission records; no source raster is reproduced.
Provenance