2003 SS422
2003 SS422, is a trans-Neptunian object discovered by Cerro Tololo Observatory, La Serena, Chile on September 28, 2003.[1]
| Discovery | |
|---|---|
| Discovery site | Cerro Tololo Obs. |
| Discovery date | 28 September 2003 |
| Designations | |
| 2003 SS422 | |
| TNO · detached · distant[1] | |
| Orbital characteristics[2] | |
| Epoch 2 November 2003 (JD 2452940.5) | |
| Uncertainty parameter 8 | |
| Observation arc | 76 days |
| Aphelion | 359.63±267.39 AU |
| Perihelion | 39.30±3.01 AU |
| 199.47±148.31 AU | |
| Eccentricity | 0.803±0.162 |
| 2817.16±3142 yr | |
| 359.172±1.809° | |
| 0° 0m 1.26s / day | |
| Inclination | 16.812±0.147° |
| 151.081±0.174° | |
| 211.727±43.173° | |
| Physical characteristics | |
| 7.146±0.160[2] | |
It is one of a small number of detached objects with perihelion distances of 30 AUs or more, and semi-major axes of 200 AU or more.[3] It is thought that objects cannot reach such orbits without some perturbing object outside the eight planets, which has led to the speculation of Planet Nine.
References
- "2003 SS422". Minor Planet Center. International Astronomical Union. Retrieved 6 September 2020.
- "JPL Small-Body Database Browser: 2003 SS422" (2003-12-13 last obs.). Jet Propulsion Laboratory. Retrieved 6 September 2020.
- minorplanetcenter.net: q>30, a>150
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