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2006 Qh181

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2006 Qh181

2006 QH181
Discovery date August 21, 2006
MPC designation 2006 QH181
Scattered disc[3]
Orbital characteristics[4]
Epoch 2013-Nov-04 (Uncertainty=6)[4]
Aphelion 96.65 AU (Q)
Perihelion 38.25 AU (q)
67.45 AU (a)
Eccentricity 0.4328
553.9 yr
100.8° (M)
Inclination 19.06°
73.86° (Ω)
211.3° (ω)
Physical characteristics
Dimensions 460–1030 km[4][5]
765 km (assumed)[6]
23.6 [7]
4.3 [4]

2006 QH181, also written as 2006 QH181, is a trans-Neptunian object (TNO). It is very likely a dwarf planet,[8] and is part of the scattered disc.[2][3] It currently has a too poorly determined orbit (U=6)[4] to know whether there is a resonance with Neptune.


  • Distance 1
  • Orbit 2
  • References 3
  • External links 4


It came to perihelion around 1858.[4] It is currently 82.9 AU from the Sun.[7][9] The only dwarf planets and likely dwarf planets currently farther from the Sun are Eris (96.4 AU),[10] 2007 OR10 (87.0 AU),[11] Sedna (86.3 AU),[12] and 2012 VP113 (83.1 AU). Because it is so far from the Sun, it only has an apparent magnitude of 23.6.[7]

Most distant TNOs in the Solar System
Body Eris 2007 OR10 Sedna 2012 VP113 2006 QH181
Distance (AU) 96.4 87.0 86.3 83.1 82.9
Magnitude (vmag) 18.7 21.4 21.0 23.4 23.6


It has been observed 15 times over only three oppositions and thus currently has a somewhat poorly known orbit. JPL ranks orbital quality from 0 to 9 (0 being best), and 2006 QH181 is currently listed with an orbit quality of 6.[4][13]


  1. ^ "MPEC 2008-O05 : Distant Minor Planets". Minor Planet Center & Tamkin Foundation Computer Network. 2008-07-17. Retrieved 2008-07-29. 
  2. ^ a b "List Of Centaurs and Scattered-Disk Objects". MPC. Retrieved 2007-03-03. 
  3. ^ a b  
  4. ^ a b c d e f g "JPL Small-Body Database Browser: (2006 QH181)" (last observation: 2013-11-06;  
  5. ^ "Absolute Magnitude (H)". NASA/JPL. Archived from the original on 1 September 2008. Retrieved 2008-07-29. 
  6. ^ Wm. Robert Johnston. "List of Known Trans-Neptunian Objects". Johnston's Archive. Archived from the original on 18 February 2007. Retrieved 2007-03-03. 
  7. ^ a b c "AstDyS 2006QH181 Ephemerides". Department of Mathematics, University of Pisa, Italy. Retrieved 2014-04-06. 
  8. ^  
  9. ^ "Horizon Online Ephemeris System". California Institute of Technology, Jet Propulsion Laboratory. Retrieved 2009-01-22. 
  10. ^ "AstDyS (136199) Eris Ephemerides". Department of Mathematics, University of Pisa, Italy. Retrieved 2012-01-31. 
  11. ^ "AstDyS 2007OR10 Ephemerides". Department of Mathematics, University of Pisa, Italy. Retrieved 2012-01-31. 
  12. ^ "AstDyS (90377) Sedna Ephemerides". Department of Mathematics, University of Pisa, Italy. Retrieved 2012-01-31. 
  13. ^ "2006 QH181". Minor Planet Center, IAU. Retrieved 2014-02-05. 

External links

  • Orbital simulation from JPL (Java) / Horizons Ephemeris
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