+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2018 DE4) Classification: TransNeptunian Object          SPK-ID: 3799766 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 4 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .926044592026435 4.5813e-05   a 32.31406683440672 0.020366 au q 2.389799996023596 2.589e-05 au i 81.32982982945289 0.00061696 deg node 155.1106307915579 9.4473e-05 deg peri 32.5063384376281 0.0012552 deg M 4.094159047835359 0.0038524 deg tp 2458237.458666028432 (2018-Apr-28.95866603) 0.00343 TDB period 67094.33537395175 183.69 63.43 0.1737 d yr n .005365579642357766 5.0725e-06 deg/d Q 62.23833367278984 0.039226 au   Orbit Determination Parameters    # obs. used (total)      68      data-arc span      125 days      first obs. used      2018-01-12      last obs. used      2018-05-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      4      norm. resid. RMS      .41828      source      ORB      producer      Otto Matic      solution date      2018-May-31 11:43:58   Additional Information  Earth MOID = 1.5079 au   Jupiter MOID = 2.76049 au   T_jup = 0.445  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 17.2   n/a MPO450735   [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ] 2021-Jan-17 20:14 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin