Astronomy:2014 YA50

From HandWiki
2014 YA50
Discovery[1][2]
Discovered byPan-STARRS 1
Discovery date25 December 2014
Designations
2014 YA50
Minor planet category
Orbital characteristics[3][6]
Epoch 2025 November 21 (JD 2461000.5)
Uncertainty parameter 2[1]
Observation arc23.12 yr (8,445 days)
Earliest precovery date19 March 2002 [1]
|{{{apsis}}}|helion}}54.29 AU
|{{{apsis}}}|helion}}38.6055 AU
46.4477 AU
Eccentricity0.1688
Orbital period316.559 yr (110,200 days)
Mean anomaly318.863°
Mean motion0.003 0° 0m 11.772s / day
Inclination23.907°
Longitude of ascending node45.28797°
|{{{apsis}}}|helion}}≈ 23 January 2062[5]
193.818°
Known satellites0
Physical characteristics
Mean diameter595 km?[4]
Apparent magnitude20.7[7]
Absolute magnitude (H)


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

  1. ↑ 1.0 1.1 1.2 1.3 1.4 "(2014 YA50)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=2014+YA50. 
  2. ↑ 2.0 2.1 "MPEC 2016-O65 : 2014 YA50". IAU Minor Planet Center. 2016-07-16. http://www.minorplanetcenter.org/mpec/K16/K16O65.html. 
  3. ↑ 3.0 3.1 3.2 3.3 3.4 "JPL Small-Body Database Browser: (2014 YA50)". Jet Propulsion Laboratory. http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=3755529. 
  4. ↑ 4.0 4.1 Johnston, Wm. Robert (19 June 2025). "List of Known Trans-Neptunian Objects". Johnston's Archive. http://www.johnstonsarchive.net/astro/tnoslist.html. Retrieved 17 January 2026. 
  5. ↑ JPL Horizons Observer Location: @sun (Perihelion occurs when deldot changes from negative to positive.
  6. ↑ Marc W. Buie. "Orbit Fit and Astrometric record for 14YA50". SwRI (Space Science Department). http://www.boulder.swri.edu/~buie/kbo/astrom/14YA50.html. 
  7. ↑ 7.0 7.1 "AstDyS: 2014 YA50 Ephemerides". AstDyS. https://newton.spacedys.com/astdys/index.php?pc=1.1.3.0&n=2014+YA50. 
  8. ↑ Michael E. Brown. "How many dwarf planets are there in the outer solar system? (updates daily)". California Institute of Technology. http://web.gps.caltech.edu/~mbrown/dps.html. 




Retrieved from "https://handwiki.org/wiki/index.php?title=Astronomy:2014_YA50&oldid=4379604"