+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   146939 (2002 DR17) Classification: Inner Main-belt Asteroid          SPK-ID: 2146939 [ 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 16 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06178411969954822 5.1674e-08   a 1.894222227059339 8.6857e-09 au q 1.77718937424516 1.0264e-07 au i 25.18040694439377 5.0794e-06 deg node 123.5087182144545 1.0014e-05 deg peri 34.40214408143277 5.2906e-05 deg M 24.84513635778827 4.7037e-05 deg tp 2458934.782096052055 (2020-Mar-26.28209605) 0.00012459 TDB period 952.2364892895366 2.61 6.5495e-06 1.793e-08 d yr n .3780573460995975 2.6003e-09 deg/d Q 2.011255079873518 9.2223e-09 au   Orbit Determination Parameters    # obs. used (total)      566      data-arc span      6663 days (18.24 yr)      first obs. used      2002-02-19      last obs. used      2020-05-18      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .50513      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 14:22:28   Additional Information  Earth MOID = .806688 au   Jupiter MOID = 3.05726 au   T_jup = 3.837  [ 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 16.4   n/a MPO453935   146939 (2002 DR17)          Discovered 2002-Feb-19 by Yeung, W. K. Y. at Desert Eagle Reference: 20070106/Numbers.arc Last Updated: 2007-01-09 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Nov-28 00:16 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin