2014 FE72
| File:2014 FE72-orbit.png Diagram showing the highly eccentric orbit of 2014 FE72 | |
| Discovery[1] | |
|---|---|
| Discovered by | |
| Discovery site | Cerro Tololo Obs. |
| Discovery date | 26 March 2014 |
| Designations | |
| 2014 FE72 | |
| Orbital characteristics[2] | |
| Epoch 21 January 2022 (JD 2459600.5) | |
| Uncertainty parameter 3 | |
| Observation arc | 6.98 yr (2,549 days) |
| Aphelion |
|
| Perihelion |
|
| |
| Eccentricity |
|
| |
| |
| 0° 0m 0.055s / day | |
| Inclination |
|
| |
| ≈ 6 October 1965[4] ±11 days | |
| |
| Physical characteristics | |
| 270 km (est. at 0.08)[5][6] | |
| 24.3[7] | |
| 6.19[2] | |
2014 FE72 is a trans-Neptunian object first observed on 26 March 2014, at Cerro Tololo Inter-American Observatory in La Serena, Chile. It is a member of the scattered disc, whose orbit extends into the inner Oort cloud.[1] Discovered by Scott Sheppard and Chad Trujillo, the object's existence was revealed on 29 August 2016.[1][8] Both the orbital period and aphelion distance of this object are well constrained.[2] 2014 FE72 had the largest barycentric aphelion until 2018. However, the heliocentric aphelion of 2014 FE72 is second among trans-Neptunian objects (after the damocloid 2017 MB7). As of 2023[update], it is about 66 AU (9.9 billion km) from the Sun.[7]
Orbit
[edit | edit source]-
Orbits of 2014 FE72 (green, at lower left) and other scattered/detached objects, along with hypothetical Planet Nine on the right
-
2014 FE72 is seen at the top here in green, moving away from the Sun
Using the Solar System Barycenter as the orbital frame of reference, 2014 FE72's extremely elongated orbit (eccentricity = 0.98) has a perihelion of 36.1 AU, an aphelion of ~4,050 AU and a barycentric orbital period of ~92,400 years.[3] The latter values are the largest known for any Solar System body that is not a long-period comet.[n 1] Based on the barycentric orbital period, 2014 FE72 takes roughly 5 times longer than Sedna to orbit the Sun.[10]
2014 FE72 last passed through perihelion around late 1965.[2]
See also
[edit | edit source]Notes
[edit | edit source]- ^ 2017 MB7, an apparently much smaller object (absolute magnitude ~14) which might be an extinct comet, has a similar barycentric aphelion of ~2,800 AU and an orbital period of ~54,000 years.[9]
References
[edit | edit source]- ^ a b c Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ a b c d e Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ a b c d e f g h i j Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ JPL Horizons Observer Location: @sun (Perihelion occurs when deldot changes from negative to positive. Uncertainty in time of perihelion is 3-sigma.)
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value). (Distance to Sun [R] from 2023 to 2028.)
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ JPL Small-Body Database Browser: (2017 MB7)
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
External links
[edit | edit source]- 2014 FE72 at AstDyS-2, Asteroids—Dynamic Site
- 2014 FE72 at the JPL Small-Body DatabaseLua error in Module:WikidataCheck at line 29: attempt to index field 'wikibase' (a nil value).
Lua error in Module:Authority_control at line 153: attempt to index field 'wikibase' (a nil value).