+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   150731 (2001 QW45) Classification: Main-belt Asteroid          SPK-ID: 2150731 [ 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 17 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1226277731844898 5.9463e-08   a 2.337205384733746 1.0043e-08 au q 2.050599092929048 1.3926e-07 au i 2.826413817746801 6.4801e-06 deg node 144.8817513366377 9.3152e-05 deg peri 176.4137961022653 9.5121e-05 deg M 150.2580466346395 1.9861e-05 deg tp 2458655.772899637146 (2019-Jun-21.27289964) 7.1663e-05 TDB period 1305.09986335347 3.57 8.412e-06 2.303e-08 d yr n .2758409606104592 1.7779e-09 deg/d Q 2.623811676538444 1.1274e-08 au   Orbit Determination Parameters    # obs. used (total)      327      data-arc span      10162 days (27.82 yr)      first obs. used      1993-03-24      last obs. used      2021-01-18      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .60901      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 10:40:02   Additional Information  Earth MOID = 1.03589 au   Jupiter MOID = 2.64334 au   T_jup = 3.555  [ 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 16.8   n/a MPO445988   150731 (2001 QW45)          Discovered 2001-Aug-16 by LINEAR at Socorro Reference: 20070303/Numbers.arc Last Updated: 2007-03-07 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-11 13:59 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin