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(182294) 2001 KU76, provisionally known as 2001 KU76, is a trans-Neptunian object (TNO) that has a 6:11 resonance with Neptune.[2] This is the same resonance that dwarf planet Makemake is either near or in.[5]

(182294) 2001 KU76
Discovered byBuie, M. W.
Discovery date24 May 2001
MPC designation(182294) 2001 KU76
Trans-Neptunian object
6:11 resonance[2][3]
Orbital characteristics[1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 4
Observation arc2536 days (6.94 yr)
Aphelion52.656 AU (7.8772 Tm) (Q)
Perihelion37.693 AU (5.6388 Tm) (q)
45.175 AU (6.7581 Tm) (a)
Eccentricity0.16561 (e)
303.63 yr (110903 d)
354.46° (M)
0° 0m 11.686s / day (n)
Inclination10.637° (i)
44.987° (Ω)
204.39° (ω)
Earth MOID36.6816 AU (5.48749 Tm)
Jupiter MOID32.3615 AU (4.84121 Tm)
Physical characteristics
Dimensions211 km (assumed)[4]
0.09 (assumed)

It will come to perihelion in 2021.[1]

Assuming a generic TNO albedo of 0.09, it is about 211 km in diameter.[4] The assumed diameter of this object makes it a possible dwarf planet.[6]


Simulations by Lykawka in 2007 show that (182294) 2001 KU76 is librating in the 11:6 resonance with Neptune.[2][3] This is the same resonance that dwarf planet Makemake is either near or in.[5] Both objects have a semi-major axis of 45 AU and an orbital period of about 302 years.

It has been observed 29 times over 6 years and has an orbit quality code of 4.[1]

The libration of 2001 KU76. Neptune is the white (stationary) dot at 5 o'clock. Uranus is blue, Saturn yellow, and Jupiter red.


  1. ^ a b c d e "JPL Small-Body Database Browser: 182294 (2001 KU76)" (2008-05-03 last obs). Retrieved 7 April 2016.
  2. ^ a b c Lykawka, Patryk Sofia; Mukai, Tadashi (July 2007). "Dynamical classification of trans-neptunian objects: Probing their origin, evolution, and interrelation". Icarus. 189 (1): 213–232. Bibcode:2007Icar..189..213L. doi:10.1016/j.icarus.2007.01.001.
  3. ^ a b Buie, Marc W. "Orbit Fit and Astrometric record for 182294" (2008-05-03 using 29 observations). SwRI (Space Science Department). Retrieved 2009-02-06.
  4. ^ a b Johnston, Wm. Robert (22 August 2008). "List of Known Trans-Neptunian Objects". Johnston's Archive. Retrieved 2009-02-06.
  5. ^ a b Tony Dunn (Author of Gravity Simulator). "Possible resonances of Eris (2003 UB313) and Makemake (2005 FY9)". Gravity Simulator. Retrieved 2009-02-06.
  6. ^ Brown, Michael E. "How many dwarf planets are there in the outer solar system? (updates daily)". California Institute of Technology. Archived from the original on 2011-10-18. Retrieved 2012-09-04.

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