+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2020 UB) Classification: Apollo [NEO]          SPK-ID: 54073342 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459141.5 (2020-Oct-19.0) TDB Reference: JPL 3 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .6537786578355698 0.0015517   a 2.774025004491487 0.012292 au q .9604266602527323 4.8842e-05 au i 6.844151015682392 0.011468 deg node 204.9862717659068 0.00085238 deg peri 207.2819967507743 0.00074424 deg M 355.6283023624763 0.031163 deg tp 2459161.993285958053 (2020-Nov-08.49328596) 0.0098732 TDB period 1687.578500757906 4.62 11.217 0.03071 d yr n .2133234097485367 0.0014179 deg/d Q 4.587623348730242 0.020328 au   Orbit Determination Parameters    # obs. used (total)      20      data-arc span      3 days      first obs. used      2020-10-16      last obs. used      2020-10-19      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      8      norm. resid. RMS      .61578      source      ORB      producer      Otto Matic      solution date      2020-Nov-16 08:29:01   Additional Information  Earth MOID = .00479687 au   Jupiter MOID = .834391 au   T_jup = 2.973  [ 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 27.9   .40812 3 autocmod 2.8 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Jan-19 03:58 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin