+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2020 WH) Classification: Apollo [NEO]          SPK-ID: 54088807 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459170.5 (2020-Nov-17.0) TDB Reference: JPL 1 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2618477484358001 0.00066639   a 1.121363488057719 0.0008138 au q .8277369835316902 0.00014715 au i 19.82041986861435 0.044175 deg node 233.5147941904915 0.0022483 deg peri 257.9053402438026 0.050894 deg M 310.2254230675444 0.10731 deg tp 2459230.468490940927 (2021-Jan-15.96849094) 0.064006 TDB period 433.7285833293904 1.19 0.47215 0.001293 d yr n .8300121639126604 0.00090353 deg/d Q 1.414989992583748 0.0010269 au   Orbit Determination Parameters    # obs. used (total)      29      data-arc span      1 day      first obs. used      2020-11-16      last obs. used      2020-11-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      8      norm. resid. RMS      .34841      source      ORB      producer      Otto Matic      solution date      2020-Nov-17 13:42:03   Additional Information  Earth MOID = .000919585 au   Jupiter MOID = 3.74005 au   T_jup = 5.483  [ 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 25.191   .34926 1 autocmod 2.8 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Jan-23 04:51 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin