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28978 Ixion (2001 KX76)
Classification: TransNeptunian Object          SPK-ID: 2028978
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

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Orbit Diagram
Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using 2-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet has stopped working because of a recent Java upgrade, here is a possible workaround.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).


Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2432268413683571 2.2508e-05  
a 39.39242986364964 0.0022528 AU
q 29.8111335740896 0.0024215 AU
i 19.65657238096713 0.0001925 deg
node 71.04174634648182 4.2137e-05 deg
peri 300.419463489104 0.0097767 deg
M 277.5723779326939 0.0091672 deg
tp 2477477.515482940180
(2071-Jan-01.01548294)
0.8681 JED
period 90306.20303204075
247.24
7.7466
0.02121
d
yr
n .003986437120739885 3.4196e-07 deg/d
Q 48.97372615320968 0.0028007 AU
  Orbit Determination Parameters
   # obs. used (total)      171  
   data-arc span      10495 days (28.73 yr)  
   first obs. used      1982-07-17  
   last obs. used      2011-04-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      2  
   fit RMS      .44632  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Aug-05 22:21:53  

Additional Information
 Earth MOID = 28.8549 AU 
 T_jup = 5.159 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 3.3 mag n/a MPO186520  

28978 Ixion           Discovered 2001 May 22 by the Deep Ecliptic Survey.
Ixion tried to win the love of Hera, but Zeus thwarted this by creating the cloud Nephele, which resembled Hera and by whom Ixion fathered the Centaurs. For his crimes Ixion was bound to a wheel that turns forever in the underworld. The name was suggested by E. K. Elliot.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020328/MPCPages.arcLast Updated: 2003-10-02
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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