+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   118783 (2000 RJ81) Classification: Main-belt Asteroid          SPK-ID: 2118783 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ 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 .1332894022874045 4.4662e-08   a 2.737571485926858 1.5676e-08 au q 2.372682218848626 1.2371e-07 au i 14.32247077294923 6.443e-06 deg node 326.5747202829104 1.6635e-05 deg peri 132.7082127476699 2.819e-05 deg M 33.67261437562629 2.1169e-05 deg tp 2458845.753453394732 (2019-Dec-28.25345339) 9.7188e-05 TDB period 1654.423269795797 4.53 1.421e-05 3.89e-08 d yr n .2175984867792837 1.869e-09 deg/d Q 3.102460753005091 1.7765e-08 au   Orbit Determination Parameters    # obs. used (total)      633      data-arc span      7095 days (19.43 yr)      first obs. used      2000-09-01      last obs. used      2020-02-04      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .56674      source      ORB      producer      Otto Matic      solution date      2020-Feb-24 06:02:05   Additional Information  Earth MOID = 1.41244 au   Jupiter MOID = 2.05043 au   T_jup = 3.294  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 15.3   n/a MPO453658   118783 (2000 RJ81)          Discovered 2000-Sep-01 by LINEAR at Socorro Reference: 20051116/Numbers.arc Last Updated: 2005-11-21 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Oct-19 22:50 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin