+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2005 WS3) Classification: Aten [NEO]          SPK-ID: 3304566 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 33 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .5754816189656556 1.0547e-07   a .6715960325292626 7.8181e-10 au q .2851048604384114 7.0794e-08 au i 23.0684745427019 3.6489e-05 deg node 69.39297424895521 5.8799e-06 deg peri 176.0817203349093 1.8989e-05 deg M 321.5739695476328 5.5516e-05 deg tp 2459221.957722844868 (2021-Jan-07.45772285) 3.1015e-05 TDB period 201.0298782677525 0.55 3.5103e-07 9.611e-10 d yr n 1.790778580289018 3.127e-09 deg/d Q 1.058087204620114 1.2317e-09 au   Orbit Determination Parameters    # obs. used (total)      161      data-arc span      4407 days (12.07 yr)      first obs. used      2005-11-25      last obs. used      2017-12-19      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .48215      source      ORB      producer      Otto Matic      solution date      2018-Feb-10 07:02:31   Additional Information  Earth MOID = .0652707 au   Jupiter MOID = 3.97038 au   T_jup = 8.288  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 21.2   n/a MPO213198   [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Mar-04 20:19 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin