+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   441479 (2008 RD129) Classification: Main-belt Asteroid          SPK-ID: 2441479 [ 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 22 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1483728581463775 8.5794e-08   a 2.447254031764855 2.7912e-08 au q 2.084147956461658 1.9519e-07 au i 6.05493227637229 4.7653e-06 deg node 260.1240071606086 9.1243e-05 deg peri 42.6437886849334 9.9436e-05 deg M 118.564683641784 4.218e-05 deg tp 2458539.957353882533 (2019-Feb-25.45735388) 0.00015888 TDB period 1398.353603364732 3.83 2.3923e-05 6.55e-08 d yr n .2574456125644933 4.4044e-09 deg/d Q 2.810360107068052 3.2053e-08 au   Orbit Determination Parameters    # obs. used (total)      228      data-arc span      4086 days (11.19 yr)      first obs. used      2008-09-09      last obs. used      2019-11-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .44561      source      ORB      producer      Otto Matic      solution date      2019-Dec-14 22:51:32   Additional Information  Earth MOID = 1.07337 au   Jupiter MOID = 2.40166 au   T_jup = 3.475  [ 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 MPO503569   441479 (2008 RD129)          Discovered 2008-Sep-09 by Spacewatch at Kitt Peak Reference: Last Updated: 2015-09-02 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Sep-28 03:01 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin