_2007_TG422&sq=Facebook&lang=en&file=File:Planet_nine-etnos_now.png) Orbital diagram of extreme Trans-neptune objects, including 2007 TG422 together with the hypothetical Planet Nine | |
| Discovery[1][2] | |
|---|---|
| Discovered by | |
| Discovery site | APO |
| Discovery date | 3 October 2007 |
| Designations | |
| (523622) 2007 TG422 | |
| 2007 TG422 | |
| Orbital characteristics[3] | |
| Epoch 27 April 2019 (JD 2458600.5) | |
| Uncertainty parameter 1 | |
| Observation arc | 13.14 yr (4,800 d) |
| Aphelion | 910.01 AU |
| Perihelion | 35.532 AU |
| 472.77 AU | |
| Eccentricity | 0.9248 |
| 10279.78 yr (3,754,688 d) | |
| 0.4774° | |
| 0° 0m 0.36s / day | |
| Inclination | 18.620° |
| 112.84° | |
| 285.54° | |
| Physical characteristics | |
| 0.04 (est.)[7] | |
| 22.4[9] | |
| 6.5[1][3][7] | |
(523622) 2007 TG422 (provisional designation 2007 TG422) is a trans-Neptunian object on a highly eccentric orbit in the scattered disc region at the edge of Solar System. Approximately 260 kilometers (160 miles) in diameter, it was discovered on 3 October 2007 by astronomers Andrew Becker, Andrew Puckett and Jeremy Kubica during the Sloan Digital Sky Survey at Apache Point Observatory in New Mexico, United States.[1] According to American astronomer Michael Brown, the bluish object is "possibly" a dwarf planet.[7] It belongs to a group of objects studied in 2014, which led to the proposition of the hypothetical Planet Nine.[10]
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