2014 FE72
![]() 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 | |
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Physical characteristics | |
Mean diameter | 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 possible dwarf planet,[5] 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).
Orbit
Orbits of 2014 FE72 (green, at lower left) and other scattered/detached objects, along with hypothetical Planet Nine on the right
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
- List of Solar System objects by greatest aphelion
- List of Solar System objects most distant from the Sun
Notes
- ^ 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
- ^ a b c Williams, G. V. (29 August 2016). "MPEC 2016-Q43 : 2014 FE72". Minor Planet Center. Retrieved 31 August 2016.
- ^ a b c d e "JPL Small-Body Database Browser: (2014 FE72)" (2021-03-18 last obs). Jet Propulsion Lab. Archived from the original on 5 February 2018. Retrieved 26 August 2018.
- ^ a b c d e f g h i j Horizons. "JPL Horizons: Barycentric Osculating Orbital Elements for 2014 FE72". Retrieved 6 June 2022.
- ^ JPL Horizons Observer Location: @sun (Perihelion occurs when deldot changes from negative to positive. Uncertainty in time of perihelion is 3-sigma.)
- ^ a b Michael E. Brown. "How many dwarf planets are there in the outer solar system? (updates daily)". California Institute of Technology. Retrieved 15 September 2016.
- ^ "Absolute magnitude (H)". Near Earth Object Program. NASA/Jet Propulsion Lab. Archived from the original on 2 March 2001. Retrieved 15 September 2016.
- ^ "AstDyS 2014FE72 Ephemerides". Department of Mathematics, University of Pisa, Italy. Retrieved 12 November 2018. (Distance to Sun [R] from 2016 to 2020.)
- ^ "Hunt for ninth planet reveals new extremely distant Solar System objects". CarnegieScience.edu. Carnegie Institution. 29 August 2016. Retrieved 31 August 2016.
- ^ JPL Small-Body Database Browser: (2017 MB7)
- ^ Horizons. "JPL Horizons: Barycentric Osculating Orbital Elements for (90377) Sedna". Retrieved 12 November 2018.
External links
- 2014 FE72 at AstDyS-2, Asteroids—Dynamic Site
- 2014 FE72 at the JPL Small-Body Database
- Articles with short description
- Short description with empty Wikidata description
- Use dmy dates from February 2018
- JPL Small-Body Database ID not in Wikidata
- Scattered disc and detached objects
- Extreme trans-Neptunian objects
- Inner Oort cloud
- Minor planet object articles (unnumbered)
- Possible dwarf planets
- Astronomical objects discovered in 2014