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| Discovery [1] | |
|---|---|
| Discovered by | Pan-STARRS 1 |
| Discovery site | Haleakalā Obs. |
| Discovery date | 9 July 2013 |
| Designations | |
| (501546) 2014 JJ80 | |
| 2014 JJ80 | |
| TNO [2] ·other [3] p-DP [4] · distant [1] | |
| Orbital characteristics [2] | |
| Epoch 27 April 2019 (JD 2458600.5) | |
| Uncertainty parameter 2 | |
| Observation arc | 6.92 yr (2,526 d) |
| Aphelion | 55.066 AU |
| Perihelion | 31.297 AU |
| 43.182 AU | |
| Eccentricity | 0.2752 |
| 283.76 yr (103,645 d) | |
| 342.32° | |
| 0° 0m 12.6s / day | |
| Inclination | 18.674° |
| 261.43° | |
| ≈ 18 July 2033 [5] | |
| 97.702° | |
| Physical characteristics | |
| 344 km (est.) [4] 352 km(est.) [3] | |
| 0.08(assumed) [4] 0.09(assumed) [3] | |
| 5.5 [1] [2] | |
(501546) 2014 JJ80, prov. designation:2014 JJ80, is a trans-Neptunian object from the outermost region of the Solar System. It was discovered on 9 July 2013, by astronomers with the Pan-STARRS survey at Haleakala Observatory, Hawaii, United States. [1] It is a dwarf planet candidate, as it measures approximately 350 kilometers (220 miles) in diameter.
2014 JJ80 orbits the Sun at a distance of 31.3–55.1 AU once every 283 years and 9 months (103,645 days; semi-major axis of 43.18 AU). Its orbit has an eccentricity of 0.28 and an inclination of 19° with respect to the ecliptic. [2] The body's observation arc begins at Haleakalā with a precovery taken in August 2010, nearly 3 years prior to its official discovery observation. [1]
This minor planet was numbered by the Minor Planet Center on 5 October 2017 and received the number 501546 in the minor planet catalog ( M.P.C. 106396). [6] As of 2021, it has not been named. [1]
According to American astronomer Michael Brown and the Johnston's archive, 2014 JJ80 measures 344 and 352 kilometers in diameter based on an assumed albedo of 0.08 and 0.09, respectively. [3] [4] On his website, Brown lists this object as a "possible" dwarf planet (200–400 km), which is the category with the lowest certainty in his 5-class taxonomic system. [4] As of 2021, no spectral type and color indices, nor a rotational lightcurve have been obtained from spectroscopic and photometric observations. The body's color, rotation period, pole and shape remain unknown. [2] [7]
