+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2020 UN4) Classification: Apollo [NEO]          SPK-ID: 54076021 [ 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 1 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .492679718763514 0.00052966   a 1.880918401989367 0.0019118 au q .9542280526801278 4.063e-05 au i 2.131116361667061 0.0020835 deg node 214.073079694228 0.00094635 deg peri 142.446558659773 0.010132 deg M 314.7259494502845 0.067075 deg tp 2459118.995050560668 (2020-Sep-26.49505056) 0.0084068 TDB period 942.2222594154113 2.58 1.4365 0.003933 d yr n .3820754566161035 0.00058252 deg/d Q 2.807608751298607 0.0028537 au   Orbit Determination Parameters    # obs. used (total)      29      data-arc span      1 day      first obs. used      2020-10-23      last obs. used      2020-10-24      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      7      norm. resid. RMS      .62918      source      ORB      producer      Otto Matic      solution date      2020-Oct-23 20:42:13   Additional Information  Earth MOID = .00541376 au   Jupiter MOID = 2.64828 au   T_jup = 3.812  [ 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 28.00   .34702 E2020-UK5 autocmod 2.8 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Feb-28 10:28 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin