+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2004 XR190) Classification: TransNeptunian Object          SPK-ID: 3308265 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 8 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1055261638470948 7.0265e-05   a 57.24741666716672 0.0028898 au q 51.20631639612439 0.0035391 au i 46.76622173862022 0.00021482 deg node 252.3942518035587 3.3112e-05 deg peri 285.5084257088261 0.02094 deg M 277.8076156635718 0.026089 deg tp 2495121.631455129049 (2119-Apr-24.13145513) 8.8898 TDB period 158209.3940798743 433.15 11.979 0.0328 d yr n .002275465386197288 1.723e-07 deg/d Q 63.28851693820906 0.0031948 au   Orbit Determination Parameters    # obs. used (total)      139      data-arc span      5383 days (14.74 yr)      first obs. used      2002-12-06      last obs. used      2017-09-01      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      3      norm. resid. RMS      .36638      source      ORB      producer      Otto Matic      solution date      2018-Sep-17 04:23:58   Additional Information  Earth MOID = 50.4956 au   Jupiter MOID = 47.2968 au   T_jup = 4.610  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 4.3   n/a MPO456527   [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ] 2021-Mar-01 23:51 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin