+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   173474 (2000 RH104) Classification: Mars-crossing Asteroid          SPK-ID: 2173474 [ 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 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2496836344561778 4.8014e-08   a 2.19293873148183 8.6541e-09 au q 1.645397818865727 1.0771e-07 au i 7.12044539899759 5.0906e-06 deg node 255.3567830157266 3.8404e-05 deg peri 110.5858104367618 3.979e-05 deg M 24.14667853638688 1.172e-05 deg tp 2458920.940311575733 (2020-Mar-12.44031158) 3.8306e-05 TDB period 1186.146069306218 3.25 7.0214e-06 1.922e-08 d yr n .3035039354053296 1.7966e-09 deg/d Q 2.740479644097934 1.0815e-08 au   Orbit Determination Parameters    # obs. used (total)      500      data-arc span      7345 days (20.11 yr)      first obs. used      2000-09-06      last obs. used      2020-10-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55408      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 10:20:58   Additional Information  Earth MOID = .661302 au   Jupiter MOID = 2.77306 au   T_jup = 3.620  [ 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 15.9   n/a MPO264385   173474 (2000 RH104)          Discovered 2000-Sep-06 by LINEAR at Socorro Reference: 20080122/Numbers.arc Last Updated: 2008-01-28 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Dec-02 20:33 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin