+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   101982 (1999 RH58) Classification: Main-belt Asteroid          SPK-ID: 2101982 [ 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 17 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2192345106549276 5.4518e-08   a 2.415688443371147 1.18e-08 au q 1.88608616959391 1.3072e-07 au i 8.07503748008566 5.8527e-06 deg node 336.2427718069404 2.6423e-05 deg peri 347.9027587964156 2.8063e-05 deg M 196.6399865989717 1.021e-05 deg tp 2459622.804682677974 (2022-Feb-12.30468268) 4.1564e-05 TDB period 1371.386308680729 3.75 1.0048e-05 2.751e-08 d yr n .2625080896033732 1.9235e-09 deg/d Q 2.945290717148384 1.4387e-08 au   Orbit Determination Parameters    # obs. used (total)      364      data-arc span      7505 days (20.55 yr)      first obs. used      1999-09-04      last obs. used      2020-03-22      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .54912      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 19:57:23   Additional Information  Earth MOID = .875098 au   Jupiter MOID = 2.39977 au   T_jup = 3.470  [ 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 16.7   n/a MPO453474   101982 (1999 RH58)          Discovered 1999-Sep-07 by LINEAR at Socorro Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Nov-26 19:22 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin