Dwarf planet · 136199
Eris
A dwarf planet on an elongated outer orbit
Eris travels far beyond Neptune for much of its orbit. No spacecraft has obtained resolved close-up photographs of its surface.
Measurements
- Effective diameter
- Not available
- Semimajor axis
- 67.934 AU
- Orbital period
- 204,516.663 Earth days
Orbit, physical values and uncertainties
- eccentricity
- .4382385347971672 ± 3.4663E-6
- semi-major axis
- 67.93394687853566 au ± .0002545
- perihelion distance
- 38.16267353549761 au ± .00015516
- inclination; angle with respect to x-y ecliptic plane
- 43.9258279471791 deg ± 3.1852E-5
- longitude of the ascending node
- 36.00477044417249 deg ± 1.4831E-5
- argument of perihelion
- 150.7949235840312 deg ± .0021022
- mean anomaly
- 211.774434275007 deg ± .0048207
- time of perihelion passage
- 2545407.716847013144 TDB ± 2.3016
- sidereal orbital period
- 204516.6629430732 d ± 1.1493
- mean motion
- .001760247770619088 deg/d ± 9.8915E-9
- aphelion distance
- 97.70522022157373 au ± .00036603
- absolute magnitude
- -1.26
- rotation period
- 25.9 h
Published JPL orbital elements describe their stated epoch; they are not current positions. Small-body diameters can be effective/model-dependent sizes, not spherical shapes. Missing measurements remain unavailable. Pluto’s diameter uses the New Horizons reference rather than an empty SBDB field. Orbital epoch: JD 2461200.5 TDB.
Object reference ↗Missions & milestones
0 launches · 0 connected events
These are target-related flights and every connected programme record in the production catalogue. A connected event may concern another stage or target of the same journey. Launch outcome does not establish arrival or current operation.
No verified target-related flight is linked in the production catalogue.
Complete source cohort: 9,386 records.