+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2021 ED) Classification: Apollo [NEO]          SPK-ID: 54128965 [ 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 6 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .4004423634798337 0.00037903   a 1.5157770417858 0.00091309 au q .9087957006646233 2.7099e-05 au i 21.6428908356869 0.012825 deg node 161.7595936070095 9.4827e-06 deg peri 49.80795308943358 0.0078087 deg M 299.1320512129913 0.061465 deg tp 2459315.749109916920 (2021-Apr-11.24910992) 0.012244 TDB period 681.6342656013167 1.87 0.61592 0.001686 d yr n .5281424631468888 0.00047722 deg/d Q 2.122758382906976 0.0012787 au   Orbit Determination Parameters    # obs. used (total)      99      data-arc span      4 days      first obs. used      2021-03-03      last obs. used      2021-03-07      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      7      norm. resid. RMS      .45599      source      ORB      producer      Otto Matic      solution date      2021-Apr-15 23:26:19   Additional Information  Earth MOID = .0162529 au   Jupiter MOID = 2.93696 au   T_jup = 4.352  [ 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 25.15   .45827 6 autocmod 2.9c [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Apr-18 06:23 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin