+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2020 TK4) Classification: Aten [NEO]          SPK-ID: 54057206 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 9 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .3380749133862773 0.00030998   a .8571717465859356 6.408e-05 au q .5673834826017314 0.00030812 au i 7.57261318681065 0.0096226 deg node 205.7395447389955 0.00015878 deg peri 320.1733296280264 0.0039542 deg M 323.2923131009871 0.036048 deg tp 2459230.056616485898 (2021-Jan-15.55661649) 0.03234 TDB period 289.8679495713322 0.79 0.032505 8.899e-05 d yr n 1.241944825332989 0.00013927 deg/d Q 1.14696001057014 8.5744e-05 au   Orbit Determination Parameters    # obs. used (total)      58      data-arc span      11 days      first obs. used      2020-10-12      last obs. used      2020-10-23      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      6      norm. resid. RMS      .34632      source      ORB      producer      Otto Matic      solution date      2020-Oct-24 07:46:22   Additional Information  Earth MOID = .0118436 au   Jupiter MOID = 3.82921 au   T_jup = 6.828  [ 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 26.3   .42368 E2020-UK5 autocmod 2.8 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Mar-07 21:22 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin