(42301) 2001 UR163

(42301) 2001 UR163
Hubble Space Telescope image of 2001 UR163 taken in 2005
Discovery[1][2]
Discovered byDES
Discovery siteKitt Peak National Obs.
Discovery date21 October 2001
Designations
(42301) 2001 UR163
2001 UR163
TNO[3] · 4:9 res[4][5]
distant[1]
Orbital characteristics[3]
Epoch 1 July 2021 (JD 2459396.5)
Uncertainty parameter 2[1][3]
Observation arc38.45 yr (14,045 d)
Aphelion66.643 AU
Perihelion36.987 AU
51.815 AU
Eccentricity0.2862
372.98 yr (136,232 d)
80.814°
0° 0m 9.36s / day
Inclination0.7531°
301.39°
8 October 1937
344.50°
Physical characteristics
352±85 km[4][6]: 26 
0.209±0.08[4][6]
21.3[9]
4.21[1][3]

(42301) 2001 UR163 (provisional designation 2001 UR163) is a resonant trans-Neptunian object and possible dwarf planet located in the outermost region of the Solar System. The object measures approximately 352 kilometers (220 miles) in diameter with a high albedo and stays in an uncommon orbital resonance (4:9) with Neptune. It was discovered on 21 October 2001 by astronomers of the Deep Ecliptic Survey program at Kitt Peak National Observatory near Tucson, Arizona, United States. As of 2021, it has not been named.[1]

  1. ^ a b c d e Cite error: The named reference MPC-object was invoked but never defined (see the help page).
  2. ^ Cite error: The named reference MPEC2001-V57 was invoked but never defined (see the help page).
  3. ^ a b c d Cite error: The named reference jpldata was invoked but never defined (see the help page).
  4. ^ a b c Cite error: The named reference johnstonsarchive-TNO-list was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Buie-DES was invoked but never defined (see the help page).
  6. ^ a b c Cite error: The named reference Fernandez-Valenzuela-2021 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference lcdb was invoked but never defined (see the help page).
  8. ^ a b c d Cite error: The named reference Belskaya-2015 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference AstDys-object was invoked but never defined (see the help page).