+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .7151494795259166 1.0554e-07   a 2.600763330843124 2.7928e-08 au q .7408287884205748 2.7527e-07 au i 1.563159455822806 1.1169e-05 deg node 159.7093508035427 0.0015968 deg peri 184.8567100574588 0.0015915 deg M 302.0606876087814 2.2087e-05 deg tp 2459447.058802898766 (2021-Aug-20.55880290) 9.7553e-05 TDB period 1531.967939906182 4.19 2.4676e-05 6.756e-08 d yr n .2349918628336612 3.7852e-09 deg/d Q 4.460697873265674 4.7901e-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.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .44532      source      ORB      producer      Otto Matic      solution date      2021-Apr-14 20:44:29   Additional Information  Earth MOID = .0250917 au   Jupiter MOID = .972998 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-Apr-19 14:04 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin