+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 21 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2225212758195928 5.3209e-08   a 2.288426025672398 8.7947e-09 au q 1.779202546821016 1.2091e-07 au i 6.765019032513987 4.899e-06 deg node 181.8447552525246 3.3595e-05 deg peri 205.8508737846085 3.4459e-05 deg M 284.5483858743202 9.7329e-06 deg tp 2459465.514586592197 (2021-Sep-08.01458659) 3.5329e-05 TDB period 1264.456066032919 3.46 7.2892e-06 1.996e-08 d yr n .2847074008110517 1.6412e-09 deg/d Q 2.79764950452378 1.0752e-08 au   Orbit Determination Parameters    # obs. used (total)      533      data-arc span      7251 days (19.85 yr)      first obs. used      2000-08-31      last obs. used      2020-07-08      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53839      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 12:24:57   Additional Information  Earth MOID = .784795 au   Jupiter MOID = 2.65688 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 16.54   n/a E2021B55   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 ] 2021-Apr-12 23:12 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin