2014 UZ224

2014 UZ224 is a trans-Neptunian object (TNO) and possible dwarf planet orbiting in the scattered disc. As of October 2018, it was approximately 90.7 astronomical units (1.357×1010 km) from the Sun, and will slowly decrease in distance until it reaches its perihelion of 38 AU sometime near 2142. The discoverers have nicknamed it "DeeDee" for "Distant Dwarf".[4][5]

2014 UZ224
2014 UZ224 imaged by ALMA
Discovery[1]
Discovery date19 August 2014
announced: 11 October 2016
Designations
2014 UZ224
Orbital characteristics[2]
Epoch 27 April 2019 (JD 2458600.5)
Uncertainty parameter 7
Observation arc814 days (2.23 yr)
Aphelion178.3 ± 15.7 AU (26.67 ± 2.35 Tm) (Q)
Perihelion38.02 ± 0.91 AU (5.688 ± 0.136 Tm) (q)
108.2 ± 9.5 AU (16.19 ± 1.42 Tm) (a)
Eccentricity0.64852 (e)
1125.24 yr (415,076 d)
320.6155° (M)
0° 0m 3.153s / day (n)
Inclination26.7883° (i)
130.7971° (Ω)
30.0030° (ω)
Physical characteristics
Dimensions635+65
−72 km[3]
0.131+0.038
−0.028[3]
23.38±0.05[3]
3.5[3]

    2014 UZ224 was discovered by a team led by David Gerdes using data collected by the large camera Dark Energy Camera (DECam).[6][7] It has a diameter of ~635 km (395 mi) and reflects just 13 percent of the sunlight that hits it on its 1,136 year orbit around the sun.[3][2] Since the numbering of (532037) 2013 FY27 in May 2019, 2014 UZ224 may be the largest unnumbered object in the Solar System.[8]

    See also

    References
    1. "MPEC MPEC 2016-T104 : 2014 UZ224". IAU Minor Planet Center. 11 October 2016. Retrieved 11 October 2016. (K14UM4Z)
    2. "JPL Small-Body Database Browser: (2014 UZ224)" (last observation: 2016-07-18; arc: 1.91 years). Jet Propulsion Laboratory. Retrieved 11 October 2016.
    3. Gerdes, D. W.; Sako, M.; Hamilton, S.; Zhang, K.; Khain, T.; Becker, J. C.; et al. (April 2017). "Discovery and Physical Characterization of a Large Scattered Disk Object at 92 AU". The Astrophysical Journal Letters. 839 (1): 7. arXiv:1702.00731. Bibcode:2017ApJ...839L..15G. doi:10.3847/2041-8213/aa64d8.
    4. "Soon you won't care about a newly discovered dwarf planet". Wired. 18 October 2016.
    5. "New dwarf planet solar system's 2nd most distant". Umich.edu.
    6. Cofield, Calla. "New Dwarf Planet Found in Our Solar System". Scientific American. Retrieved 12 October 2016.
    7. "A Friend for Pluto: Astronomers Find New Dwarf Planet in Our Solar System".
    8. Brown, M. (20 May 2019), How many dwarf planets are there in the outer solar system?, retrieved 1 June 2019


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