kuiper object
Sedna
An extreme detached object from the Solar System's remote frontier.
Sedna's enormous, eccentric orbit may preserve evidence of the early Solar System's environment.
- Orbit representation
- verified fallback
- Surface
- procedural reconstruction
Reference measurements
The numbers that shape this world
- Mean radius
- 500 km
- Semi-major axis
- 506.8 AU
- Orbital period
- 11,409.193 Earth yearsKeplerian estimate from the catalogued semi-major axis.
- Eccentricity
- 0.855
- Inclination
- 11.93°
- Visual geometry
- sphere
Orbital character
A strongly elongated path around the Sun
Sedna follows a catalogued path with a 506.8 AU semi-major axis, eccentricity 0.855, and 11.93° inclination. The resulting two-body period estimate is 11,409.193 Earth years; the representation notes below state the source epoch and precision boundary used by Explore.
Catalogue context
Sedna among its nearest Helios peers
Sedna is linked with Pluto, Eris, Haumea, Makemake, Quaoar, Gonggong, 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