2003 QX113

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search
2003 QX113
Discovery date2003
MPC designation2003 QX113
Detached object[2]
Orbital characteristics[3]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 5
Observation arc1778 days (4.87 yr)
Aphelion62.146 AU (9.2969 Tm) (Q)
Perihelion36.750 AU (5.4977 Tm) (q)
49.448 AU (7.3973 Tm) (a)
Eccentricity0.25680 (e)
347.72 yr (127004 d)
136.84° (M)
0° 0m 10.205s /day (n)
Inclination6.7751° (i)
158.07° (Ω)
25.042° (ω)
Earth MOID35.7537 AU (5.34868 Tm)
Jupiter MOID31.3004 AU (4.68247 Tm)
Physical characteristics
Dimensions505 km (assumed)[4]
0.09 (assumed)

2003 QX113, also written as 2003 QX113, is a detached object[2] that was discovered when it was near aphelion. With an absolute magnitude of 4.7,[3] it may be a dwarf planet.[6]

As of February 2016 located 59.9 AU from the Sun,[7] it will have moved beyond 60 AU by 2017 and will reach its aphelion around 2058.[8] It last came to perihelion around 1883.[3] Its current distance makes it one of the twelve most distant known minor planets in the Solar System (see table below).[7]

Size estimate[edit]

When 2003 QX113 was first discovered, it was estimated to have an absolute magnitude (H) of 4.9,[1] giving it an assumed size of only 461 kilometres (286 mi) in diameter.[4] As of 2010, 2003 QX113 is estimated to have a brighter absolute magnitude (H) of 4.7.[3] Assuming it is a trans-Neptunian object with a generic albedo of 0.09, it is about 505 kilometres (314 mi) in diameter.[4]

It has been observed 23 times over six oppositions and has an orbit quality of 4.[3]

The orbit of 2003 QX113 compared to those of Pluto and Neptune.

See also[edit]


  1. ^ a b Marsden, Brian G. (2006-04-22). "MPEC 2006-H29 : 45 NEW MULTIPLE-OPPOSITION TNOs". IAU Minor Planet Center. Harvard-Smithsonian Center for Astrophysics. Retrieved 2010-01-06.
  2. ^ a b Marc W. Buie. "Orbit Fit and Astrometric record for 03QX113" (last observation: 2008-05-05 using 23 of 23 observations over 4.87 years). SwRI (Space Science Department). Retrieved 2009-03-23.
  3. ^ a b c d e f "JPL Small-Body Database Browser: (2003 QX113)" (last observation: 2008-05-05; arc: 4.87 years). Retrieved 30 March 2016.
  4. ^ a b c Wm. Robert Johnston (22 August 2008). "List of Known Trans-Neptunian Objects". Johnston's Archive. Archived from the original on 18 April 2009. Retrieved 2009-03-23.
  5. ^ "AstDyS 2003QX113 Ephemerides". Department of Mathematics, University of Pisa, Italy. Archived from the original on 2009-05-14. Retrieved 2009-03-23.
  6. ^ "How many dwarf planets are there in the outer solar system?". Gps.caltech.edu. 2015-07-21. Archived from the original on 2011-10-18. Retrieved 2015-07-22.
  7. ^ a b c d "AstDyS-2, Asteroids - Dynamic Site". Retrieved 2018-12-26. Objects with distance from Sun over 59 AU
  8. ^ "Horizon Online Ephemeris System". California Institute of Technology, Jet Propulsion Laboratory. Retrieved 2009-03-23.

External links[edit]