+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 21 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1332551524991414 4.4578e-08   a 2.737067059953579 1.5524e-08 au q 2.372338771479088 1.2348e-07 au i 14.32314585541239 6.4164e-06 deg node 326.5754761501439 1.6422e-05 deg peri 132.6266627825841 2.7926e-05 deg M 77.27320615675615 2.0912e-05 deg tp 2458845.479840172221 (2019-Dec-27.97984017) 9.5906e-05 TDB period 1653.966023859955 4.53 1.4071e-05 3.852e-08 d yr n .2176586428056408 1.8518e-09 deg/d Q 3.10179534842807 1.7593e-08 au   Orbit Determination Parameters    # obs. used (total)      673      data-arc span      7198 days (19.71 yr)      first obs. used      2000-09-01      last obs. used      2020-05-17      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .55834      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 16:58:51   Additional Information  Earth MOID = 1.41205 au   Jupiter MOID = 2.05103 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 15.38   n/a E2021B55   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 ] 2021-Apr-17 01:13 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin