+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 23 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1483093505350717 8.5747e-08   a 2.447581201779774 2.7907e-08 au q 2.084582023361965 1.9505e-07 au i 6.054230353153239 4.3961e-06 deg node 260.1222627931809 7.4499e-05 deg peri 42.70577609279567 8.1496e-05 deg M 169.9754136881982 3.7891e-05 deg tp 2458540.129451045317 (2019-Feb-25.62945105) 0.00013885 TDB period 1398.634028682421 3.83 2.392e-05 6.549e-08 d yr n .2573939948673613 4.4021e-09 deg/d Q 2.810580380197582 3.2045e-08 au   Orbit Determination Parameters    # obs. used (total)      252      data-arc span      4514 days (12.36 yr)      first obs. used      2008-09-09      last obs. used      2021-01-18      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .45261      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 00:12:11   Additional Information  Earth MOID = 1.07185 au   Jupiter MOID = 2.40097 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 ] 2021-Feb-24 21:26 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin