+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   160723 (2000 QL171) Classification: Main-belt Asteroid          SPK-ID: 2160723 [ 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 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2227884245969635 6.704e-08   a 2.28756798703804 9.4605e-09 au q 1.777924319047388 1.51e-07 au i 6.765327606446652 5.5866e-06 deg node 181.8711526459771 3.3706e-05 deg peri 205.9183082871171 3.4919e-05 deg M 227.5062400722743 9.5017e-06 deg tp 2459465.606454258743 (2021-Sep-08.10645426) 3.5295e-05 TDB period 1263.744976551981 3.46 7.8395e-06 2.146e-08 d yr n .2848676012008601 1.7671e-09 deg/d Q 2.797211655028692 1.1568e-08 au   Orbit Determination Parameters    # obs. used (total)      490      data-arc span      7180 days (19.66 yr)      first obs. used      2000-08-31      last obs. used      2020-04-28      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .54653      source      ORB      producer      Otto Matic      solution date      2020-May-21 01:35:23   Additional Information  Earth MOID = .784813 au   Jupiter MOID = 2.65602 au   T_jup = 3.558  [ 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 16.5   n/a MPO320693   160723 (2000 QL171)          Discovered 2000-Aug-31 by LINEAR at Socorro Reference: 20070828/Numbers.arc Last Updated: 2007-08-30 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Jul-05 14:40 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin