+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   146752 (2001 XU143) Classification: Main-belt Asteroid          SPK-ID: 2146752 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ 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 .119341387949832 5.2289e-08   a 2.917691480547812 2.0632e-08 au q 2.569490129649836 1.584e-07 au i .891111048246135 4.4297e-06 deg node 264.6412834667727 0.00031881 deg peri 88.94074327631473 0.00031931 deg M 324.8728838492935 1.7877e-05 deg tp 2459178.122293622318 (2020-Nov-24.62229362) 9.0559e-05 TDB period 1820.36081270362 4.98 1.9308e-05 5.286e-08 d yr n .1977629915386521 2.0976e-09 deg/d Q 3.265892831445788 2.3094e-08 au   Orbit Determination Parameters    # obs. used (total)      406      data-arc span      7272 days (19.91 yr)      first obs. used      2000-08-31      last obs. used      2020-07-29      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .56546      source      ORB      producer      Otto Matic      solution date      2020-Aug-25 11:32:33   Additional Information  Earth MOID = 1.5645 au   Jupiter MOID = 2.16043 au   T_jup = 3.270  [ hide covariance matrix ] Orbital Elements at Epoch 2457172.5 (2015-May-30.0) TDB Reference: JPL 16 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1218069252258823 5.2222e-08   q 2.560519103617 1.5856e-07 au tp 2457363.460044714268 (2015-Dec-06.96004471) 8.9332e-05 TDB node 264.742379286352 0.00031931 deg peri 89.7574774096591 0.0003198 deg i .8901112525079683 4.4295e-06 deg   Orbit Determination Parameters    # obs. used (total)      406      data-arc span      7272 days (19.91 yr)      first obs. used      2000-08-31      last obs. used      2020-07-29      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .56546      source      ORB      producer      Otto Matic      solution date      2020-Aug-25 11:32:33   Additional Information  Jupiter MOID = 2.16043 au   T_jup = 3.270  Orbit Covariance (6×6)   e q tp node peri i e 2.727122387120343E-15 -8.231378183222687E-15 -3.243831007129013E-13 2.77136922655489E-14 2.430621402417378E-15 -2.140111677356246E-16 q -8.231378183222687E-15 2.513971203502784E-14 7.297273300513723E-13 -7.896891563634214E-14 -6.837668789490149E-14 6.756345322370312E-16 tp -3.243831007129013E-13 7.297273300513723E-13 7.980270908189065E-9 4.69113120535074E-12 1.603988629378571E-9 4.828567341111888E-13 node 2.77136922655489E-14 -7.896891563634214E-14 4.69113120535074E-12 1.019618373985888E-7 -1.019474580402874E-7 1.219556939349147E-10 peri 2.430621402417378E-15 -6.837668789490149E-14 1.603988629378571E-9 -1.019474580402874E-7 1.022720517487319E-7 -1.218504329396498E-10 i -2.140111677356246E-16 6.756345322370312E-16 4.828567341111888E-13 1.219556939349147E-10 -1.218504329396498E-10 1.96200956055153E-11 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 15.8   n/a MPO436736   146752 (2001 XU143)          Discovered 2001-Dec-14 by LINEAR at Socorro Reference: 20070106/Numbers.arc Last Updated: 2007-01-09 [ show close-approach data ] Alternate Designations  2001 XU143 = 2004 HL59  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Sep-18 15:30 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin