+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2020 TB12) Classification: Apollo [NEO]          SPK-ID: 54092465 [ 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 38 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .5197906687438348 3.7907e-06   a 2.027596103880402 1.588e-05 au q .9736705691020139 6.2711e-08 au i 8.914819233097358 4.5067e-05 deg node 126.8273591490802 1.5509e-05 deg peri 353.9603878397037 1.5283e-05 deg M 347.1941813829036 0.00014582 deg tp 2459238.012451272338 (2021-Jan-23.51245127) 1.4776e-05 TDB period 1054.558311486033 2.89 0.012389 3.392e-05 d yr n .3413751483241408 4.0105e-06 deg/d Q 3.08152163865879 2.4134e-05 au   Orbit Determination Parameters    # obs. used (total)      193      data-arc span      173 days      first obs. used      2020-10-15      last obs. used      2021-04-06      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      4      norm. resid. RMS      .41931      source      ORB      producer      Otto Matic      solution date      2021-Apr-06 06:26:54   Additional Information  Earth MOID = .00905642 au   Jupiter MOID = 2.02715 au   T_jup = 3.620  [ 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 22.16   .53395 E2021D77 autocmod 2.8 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Apr-12 05:06 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin