+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2020 TD8) Classification: Apollo [NEO]          SPK-ID: 54075304 [ 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 11 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .3249437853512794 6.0384e-05   a 1.362827011915099 0.00010765 au q .9199848438844338 9.6281e-06 au i 6.038434405217864 0.00097016 deg node 215.0217944420311 2.5771e-05 deg peri 225.4745969072336 0.00024038 deg M 243.9941130895432 0.014603 deg tp 2459187.756565754375 (2020-Dec-04.25656575) 0.0013864 TDB period 581.1115751704018 1.59 0.06885 0.0001885 d yr n .6195023733513407 7.3399e-05 deg/d Q 1.805669179945764 0.00014262 au   Orbit Determination Parameters    # obs. used (total)      82      data-arc span      12 days      first obs. used      2020-10-15      last obs. used      2020-10-27      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      6      norm. resid. RMS      .43839      source      ORB      producer      Otto Matic      solution date      2020-Nov-03 14:58:37   Additional Information  Earth MOID = .000108026 au   Jupiter MOID = 3.45183 au   T_jup = 4.781  [ 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 26.914   .28739 11 autocmod 2.8 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Jan-16 00:40 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin