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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2450305345194763 2.3662e-05  
a 39.8176878989973 0.0025282 au
q 30.06113854977631 0.002609 au
i 19.58879632701413 0.0001505 deg
node 70.99933777260793 4.5743e-05 deg
peri 298.172579831649 0.010807 deg
M 288.8648254690119 0.0092938 deg
tp 2477134.532291414289
(2070-Jan-23.03229141)
0.87765 TDB
period 91772.48341557509
251.26
8.7407
0.02393
d
yr
n .003922744450205244 3.7361e-07 deg/d
Q 49.57423724821829 0.0031477 au
  Orbit Determination Parameters
   # obs. used (total)      194  
   data-arc span      13122 days (35.93 yr)  
   first obs. used      1982-07-17  
   last obs. used      2018-06-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      3  
   norm. resid. RMS      .29521  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 01:14:25  

Additional Information
 Earth MOID = 29.1073 au 
 Jupiter MOID = 25.3257 au 
 T_jup = 5.184 
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Orbital Elements at Epoch 2455088.5 (2009-Sep-14.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2450327746251615 2.3983e-05  
q 29.93786434908691 0.0026131 au
tp 2477226.198608553208
(2070-Apr-24.69860855)
0.86679 TDB
node 71.03334785952008 4.5722e-05 deg
peri 298.967102650737 0.010732 deg
i 19.61549560261936 0.00015071 deg
  Orbit Determination Parameters
   # obs. used (total)      194  
   data-arc span      13122 days (35.93 yr)  
   first obs. used      1982-07-17  
   last obs. used      2018-06-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      3  
   norm. resid. RMS      .29521  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 01:14:25  

Additional Information
 Jupiter MOID = 25.3257 au 
 T_jup = 5.184 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.752054733066175E-10 -5.230379302301084E-8 -4.93306755035689E-6 -1.958947320279323E-11 1.571880958879448E-7 -1.429068636884207E-10
q -5.230379302301084E-8 6.828268426868218E-6 -.0007567172536480921 2.021219564324045E-9 -2.651807455847758E-5 1.615790223696261E-8
tp -4.93306755035689E-6 -.0007567172536480921 .7513314538821888 3.431577213819249E-8 .005790209783607824 -5.714646022793028E-7
node -1.958947320279323E-11 2.021219564324045E-9 3.431577213819249E-8 2.090483331911594E-9 -8.716723859370979E-9 5.081226630757539E-9
peri 1.571880958879448E-7 -2.651807455847758E-5 .005790209783607824 -8.716723859370979E-9 .0001151731162537906 -6.234563199783596E-8
i -1.429068636884207E-10 1.615790223696261E-8 -5.714646022793028E-7 5.081226630757539E-9 -6.234563199783596E-8 2.271256387640405E-8

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 3.6   n/a MPO305587  

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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