+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2020 WD) Classification: Apollo [NEO]          SPK-ID: 54088803 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 7 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .3778113960325888 0.00062019   a 1.580754258320206 0.0015568 au q .9835272851997896 1.1765e-05 au i .6344489392455657 0.00072379 deg node 202.5205813437383 0.010236 deg peri 185.6491401470941 0.0049674 deg M 287.0142142138619 0.10777 deg tp 2459147.673885201734 (2020-Oct-25.17388520) 0.00029667 TDB period 725.9303726327362 1.99 1.0724 0.002936 d yr n .495915329585103 0.00073261 deg/d Q 2.177981231440623 0.002145 au   Orbit Determination Parameters    # obs. used (total)      31      data-arc span      9 days      first obs. used      2020-11-16      last obs. used      2020-11-25      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      7      norm. resid. RMS      .56932      source      ORB      producer      Otto Matic      solution date      2020-Nov-25 05:21:38   Additional Information  Earth MOID = .00278537 au   Jupiter MOID = 3.27182 au   T_jup = 4.312  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 28.195   .40965 7 autocmod 2.8 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2020-Dec-01 17:35 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin