2003 SS422
From Wikipedia, the free encyclopedia
Discoverydate28 September 2003
2003 SS422
| Discovery[1] | |
|---|---|
| Discovered by | Cerro Tololo Obs. |
| Discovery site | Cerro Tololo Obs. |
| Discovery date | 28 September 2003 |
| Designations | |
| 2003 SS422 | |
| TNO[2] · extreme[3] 1:16 Resonant distant[1] | |
| Orbital characteristics[4] | |
| Epoch 5 July 2021 (JD 2459400.5) | |
| Uncertainty parameter 3[2] | |
| Observation arc | 14.92 yr (5,448 days) |
| Aphelion | 356.788 AU |
| Perihelion | 39.574 AU |
| 198.181 AU | |
| Eccentricity | 0.8003140 |
| 2790 yr | |
| 1.770° | |
| 0° 0m 1.272s / day | |
| Inclination | 16.773° |
| 150.949° | |
| 206.824° | |
| Physical characteristics | |
| 163 km (est. at 0.09)[3] | |
| 7.04[4] | |
2003 SS422 is a trans-Neptunian object located in the outermost region of the Solar System. It was discovered on 28 September 2003, by American astronomers at the Cerro Tololo Observatory in La Serena, Chile, and estimated to measure approximately 168 kilometers (104 miles) in diameter.[1][3]
Due to the object's high eccentricity and large perihelia, 2003 SS422 is an extreme trans-Neptunian object from the scattered disc (ESDO).[3] It was a lost minor planet until it was recovered in June 2021.[4]
