+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (1983 LC) Classification: Apollo [NEO, PHA]          SPK-ID: 3005806 [ 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 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .7150273157625685 1.0554e-07   a 2.601034380379267 2.7675e-08 au q .7412237491705242 2.7527e-07 au i 1.562866914923277 1.1159e-05 deg node 159.7032964183867 0.0015969 deg peri 184.8525336843723 0.0015917 deg M 255.069652580256 2.1427e-05 deg tp 2459447.097385206013 (2021-Aug-20.59738521) 9.7583e-05 TDB period 1532.20743691079 4.19 2.4454e-05 6.695e-08 d yr n .2349551316144411 3.7499e-09 deg/d Q 4.460845011588011 4.7464e-08 au   Orbit Determination Parameters    # obs. used (total)      67      data-arc span      7852 days (21.50 yr)      first obs. used      1983-06-13      last obs. used      2004-12-11      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .44587      source      ORB      producer      Otto Matic      solution date      2017-Apr-06 09:18:27   Additional Information  Earth MOID = .0249893 au   Jupiter MOID = .972076 au   T_jup = 2.989  [ 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 19.3   n/a MPO71937   [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Jan-18 17:08 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin