+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   146432 (2001 QW269) Classification: Main-belt Asteroid          SPK-ID: 2146432 [ 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 .1407976467336513 1.2689e-07   a 2.557961021589175 2.1702e-08 au q 2.197806129313012 3.1436e-07 au i 5.230046519401601 6.0402e-06 deg node 341.7232330227288 5.7282e-05 deg peri 10.71486975880148 6.1432e-05 deg M 179.9597712836686 3.0668e-05 deg tp 2458253.514378646124 (2018-May-15.01437865) 0.00012259 TDB period 1494.305209265397 4.09 1.9017e-05 5.207e-08 d yr n .2409146389692215 3.0659e-09 deg/d Q 2.918115913865337 2.4758e-08 au   Orbit Determination Parameters    # obs. used (total)      462      data-arc span      6845 days (18.74 yr)      first obs. used      2001-07-21      last obs. used      2020-04-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52084      source      ORB      producer      Otto Matic      solution date      2020-May-20 23:54:53   Additional Information  Earth MOID = 1.19242 au   Jupiter MOID = 2.50419 au   T_jup = 3.417  [ 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 15.8   n/a MPO469553   146432 (2001 QW269)          Discovered 2001-Aug-19 by LINEAR at Socorro Reference: 20070106/Numbers.arc Last Updated: 2007-01-09 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Aug-15 06:15 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin