+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   227472 (2005 WF162) Classification: Main-belt Asteroid          SPK-ID: 2227472 [ 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 15 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .05129501872180438 4.6199e-08   a 2.675644494358323 2.3486e-08 au q 2.53839725992732 1.2584e-07 au i 4.066198430957589 5.0333e-06 deg node 82.82024176090761 9.6049e-05 deg peri 171.0794567663515 0.00011897 deg M 335.9253605268093 6.849e-05 deg tp 2459307.405077408416 (2021-Apr-02.90507741) 0.00030393 TDB period 1598.604536108934 4.38 2.1048e-05 5.763e-08 d yr n .2251964084102089 2.965e-09 deg/d Q 2.812891728789326 2.469e-08 au   Orbit Determination Parameters    # obs. used (total)      262      data-arc span      6692 days (18.32 yr)      first obs. used      2001-12-20      last obs. used      2020-04-16      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .63764      source      ORB      producer      Otto Matic      solution date      2021-Apr-14 00:39:54   Additional Information  Earth MOID = 1.52202 au   Jupiter MOID = 2.19346 au   T_jup = 3.373  [ 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 16.50   n/a E2021B55   227472 (2005 WF162)          Discovered 2005-Nov-28 by Mt. Lemmon Survey at Mount Lemmon Reference: 20091202/Numbers.arc Last Updated: 2009-12-04 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-23 17:39 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin