2014 YA50
| Discovery[1][2] | |
|---|---|
| Discovered by | Pan-STARRS 1 |
| Discovery date | 25 December 2014 |
| Designations | |
| 2014 YA50 | |
| Orbital characteristics[3][5] | |
| Epoch 2025 November 21 (JD 2461000.5) | |
| Uncertainty parameter 2[1] | |
| Observation arc | 23.12 yr (8,445 days) |
| Earliest precovery date | 19 March 2002 [1] |
| Aphelion | 54.29 AU |
| Perihelion | 38.6055 AU |
| 46.4477 AU | |
| Eccentricity | 0.1688 |
| 316.559 yr (110,200 days) | |
| 318.863° | |
| 0.003 0° 0m 11.772s / day | |
| Inclination | 23.907° |
| 45.28797° | |
| ≈ 23 January 2062[6] | |
| 193.818° | |
| Known satellites | 0 |
| Physical characteristics | |
| 595 km?[4] | |
| 20.7[7] | |
| |
2014 YA50 is a medium-sized trans-Neptunian object orbiting the Sun as a classical Kuiper Belt object in the outer reaches of the Solar System. The object was discovered on 25 December 2014 by Pan-STARRS 1, at the Haleakala Observatory in Hawaii, United States, but the discovery was announced on 16 July 2016.[2] Michael E. Brown suggested that 2014 YA50 is large enough that it could be a dwarf planet,[8] however transneptunian bodies smaller than 900–1,000 km are unlikely to be fully solid bodies, and thus not dwarf planets.
It has been observed with precovery images back to 2002.[3]
Description
2014 YA50 orbits the Sun at a distance of 38.6-54.3 AU once every 316.5 years. Its orbit has an eccentricity of 0.1688 and an inclination of 24° with respect to the ecliptic.
Using the best-fit values for its orbit, it is expected to come to perihelion in 2062.[3] It has been observed 311 times over 24 years and has an uncertainty parameter of 2.[1] As of 2026, it is 45.677 AU from the Sun.[1][7] The body's spectral type as well as its rotation period remain unknown.
References
- ^ a b c d e "(2014 YA50)". Minor Planet Center. Retrieved 17 January 2026.
- ^ a b "MPEC 2016-O65 : 2014 YA50". IAU Minor Planet Center. 16 July 2016. Retrieved 17 January 2026.
- ^ a b c d e "JPL Small-Body Database Browser: (2014 YA50)" (2025-05-02 last obs.). Jet Propulsion Laboratory. Retrieved 17 January 2026.
- ^ a b Johnston, Wm. Robert (19 June 2025). "List of Known Trans-Neptunian Objects". Johnston's Archive. Retrieved 17 January 2026.
- ^ Marc W. Buie. "Orbit Fit and Astrometric record for 14YA50" (last observation: 2025-05-02 using 311 of 311 observations over 23 years). SwRI (Space Science Department). Retrieved 17 January 2026.
- ^ JPL Horizons Observer Location: @sun (Perihelion occurs when deldot changes from negative to positive.
- ^ a b "AstDyS: 2014 YA50 Ephemerides". AstDyS. Retrieved 17 January 2026.
- ^ Michael E. Brown. "How many dwarf planets are there in the outer solar system? (updates daily)". California Institute of Technology. Retrieved 17 January 2026.
External links
- 2014 YA50 at AstDyS-2, Asteroids—Dynamic Site
- 2014 YA50 at the JPL Small-Body Database