2014 FE72
Orbits of 2014 FE72 (green) and other scattered/detached objects, along with hypothetical Planet Nine on the right
|
|
| Discovery | |
|---|---|
| Discovered by |
Scott Sheppard, Chad Trujillo |
| Discovery date | 26 March 2014 |
| Designations | |
| MPC designation | 2014 FE72 |
| SDO | |
| Orbital characteristics | |
| Epoch 2017-Feb-16 (JD 2457800.5) | |
| Uncertainty parameter 5 | |
| Observation arc | 623 days |
| Aphelion |
3700±2600 AU 2960 AU (barycentric) |
| Perihelion | 36.36±0.22 AU |
|
1900±1300 AU 1500 AU (barycentric) |
|
| Eccentricity | 0.980±0.014 |
|
80000±83000 yr 58000 yr (barycentric solution) |
|
| 0.23±0.24° | |
| 0° 0m 0.041s ± 0° 0m 0.045s/ day | |
| Inclination | 20.60±0.0059° |
| 336.78±0.01° | |
| 134.43±0.12° | |
| Jupiter MOID | 31.28 AU |
| Physical characteristics | |
| Dimensions | ~270 km (based on assumed albedo) ~170–380 km (based on possible albedo range of 0.25–0.05) |
| 0.08 (assumed) | |
| 24.1 | |
| 6.08±0.17 | |
2014 FE72 is a trans-Neptunian object and possible dwarf planet, a member of the scattered disc, whose orbit extends into the inner Oort cloud. Discovered by Scott Sheppard and Chad Trujillo, the object's existence was revealed on 29 August 2016.
Its elongated orbit (eccentricity = 0.98) has a perihelion of 36.3 AU, an aphelion of ~3000 AU and an orbital period of ~58,000 years. The latter values are the largest known for any Solar System body that is not a long-period comet. It takes roughly 5 times longer than Sedna to orbit the Sun. The epoch of October 2021 will be when 2014 FE72 will have its smallest heliocentric aphelion of 2456 AU.
2014 FE72 last passed through perihelion around late 1965. In 2017, it will move from 61.5 AU to 62.2 AU from the Sun. It comes to opposition at the end of March.
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