![]() Diagram showing the highly eccentric orbit of 2014 FE72 | |
Discovery [1] | |
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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 |
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Perihelion |
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Eccentricity |
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0° 0m 0.055s / day | |
Inclination |
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≈ 6 October 1965 [4] ±11 days | |
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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]
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]