2014 SS349 is an extreme trans-Neptunian and scattered disc object from the outermost regions of the Solar System, approximately 134 kilometers in diameter.[3][4]
| Discovery[1][2] | |
|---|---|
| Discovery site | Cerro Tololo Obs. |
| Discovery date | 22 September 2014 |
| Designations | |
MPC designation | 2014 SS349 |
Minor planet category | TNO[3] · SDO[4] distant[1] · detached |
| Orbital characteristics[3] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 6 | |
| Observation arc | 1.21 yr (443 days) |
| Aphelion | 241.52 AU |
| Perihelion | 45.431 AU |
Semi-major axis | 143.48 AU |
| Eccentricity | 0.6834 |
Orbital period (sidereal) | 1718.60 yr (627,720 days) |
Mean anomaly | 8.1082° |
Mean motion | 0° 0m 2.16s / day |
| Inclination | 48.266° |
Longitude of ascending node | 144.20° |
Argument of perihelion | 147.77° |
| Physical characteristics | |
| Dimensions | 134 km (calculated)[4] |
Geometric albedo | 0.09 (assumed)[4] |
Absolute magnitude (H) | 7.6[3] |
2014 SS349 was first observed on 22 September 2014, by astronomers at the Cerro Tololo Observatory near La Serena, Chile.[1]
It orbits the Sun at a distance of 45.4–241.5 AU once every 1718 years and 7 months (627,720 days). Its orbit has an eccentricity of 0.68 and an inclination of 48° with respect to the ecliptic.[3]
Based on an absolute magnitude of approximately 7.6 and an assumed albedo of 0.09, the Johnston's Archive calculated a mean-diameter of 134 kilometers.[4]
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