+ 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 8 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .3772602321411536 0.00033663   a 1.579373174754823 0.00084359 au q .9835384842093077 6.3364e-06 au i .6337826169600561 0.00037926 deg node 202.5279733557198 0.0063476 deg peri 185.6469453905746 0.0033781 deg M 286.9183922466502 0.058523 deg tp 2459147.674020859611 (2020-Oct-25.17402086) 8.6344e-05 TDB period 724.9792271713046 1.98 0.58085 0.00159 d yr n .4965659518337289 0.00039784 deg/d Q 2.175207865300338 0.0011618 au   Orbit Determination Parameters    # obs. used (total)      32      data-arc span      24 days      first obs. used      2020-11-16      last obs. used      2020-12-10      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      7      norm. resid. RMS      .58518      source      ORB      producer      Otto Matic      solution date      2020-Dec-12 05:24:29   Additional Information  Earth MOID = .00278359 au   Jupiter MOID = 3.27456 au   T_jup = 4.315  [ 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 28.213   .41173 8 autocmod 2.8 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Jan-19 16:42 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin