+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   28978 Ixion (2001 KX76) Classification: TransNeptunian Object          SPK-ID: 2028978 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] 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  [ hide covariance matrix ] 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.arc Last Updated: 2003-10-02 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2021-Jan-19 22:28 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin