+ 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 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1193413842788067 5.1935e-08   a 2.917691484885779 1.7851e-08 au q 2.569490144181023 1.5616e-07 au i .8911125317211771 3.5089e-06 deg node 264.6412497978887 0.00031067 deg peri 88.94077959231906 0.00031113 deg M 324.8728798463742 1.5256e-05 deg tp 2459178.122314259439 (2020-Nov-24.62231426) 7.6754e-05 TDB period 1820.360816763336 4.98 1.6706e-05 4.574e-08 d yr n .1977629910976069 1.8149e-09 deg/d Q 3.265892825590535 1.9981e-08 au   Orbit Determination Parameters    # obs. used (total)      516      data-arc span      7380 days (20.21 yr)      first obs. used      2000-08-31      last obs. used      2020-11-14      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .5348      source      ORB      producer      Otto Matic      solution date      2020-Dec-17 23:07:09   Additional Information  Earth MOID = 1.5645 au   Jupiter MOID = 2.16043 au   T_jup = 3.270  [ hide covariance matrix ] Orbital Elements at Epoch 2457727.5 (2016-Dec-05.0) TDB Reference: JPL 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1216693879825829 5.1878e-08   q 2.560276442068029 1.5646e-07 au tp 2457362.865430150009 (2015-Dec-06.36543015) 8.0579e-05 TDB node 264.7120635483603 0.00031108 deg peri 89.63594056029629 0.00031152 deg i .8902999209528202 3.5069e-06 deg   Orbit Determination Parameters    # obs. used (total)      516      data-arc span      7380 days (20.21 yr)      first obs. used      2000-08-31      last obs. used      2020-11-14      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .5348      source      ORB      producer      Otto Matic      solution date      2020-Dec-17 23:07:09   Additional Information  Jupiter MOID = 2.16043 au   T_jup = 3.270  Orbit Covariance (6×6)   e q tp node peri i e 2.691311803569016E-15 -8.079064002974818E-15 -9.609861100888205E-14 3.976207685837271E-14 2.703401107596357E-14 -6.936994029755331E-16 q -8.079064002974818E-15 2.448090298072809E-14 -2.692730169187576E-13 -1.171216733166558E-13 -1.903317391640582E-13 2.114582907678193E-15 tp -9.609861100888205E-14 -2.692730169187576E-13 6.492966050188253E-9 3.228118518641059E-13 1.373363082271018E-9 4.647842902271867E-13 node 3.976207685837271E-14 -1.171216733166558E-13 3.228118518641059E-13 9.677239457439705E-8 -9.675904410453075E-8 2.938543163605784E-10 peri 2.703401107596357E-14 -1.903317391640582E-13 1.373363082271018E-9 -9.675904410453075E-8 9.704766689111846E-8 -2.937421873601323E-10 i -6.936994029755331E-16 2.114582907678193E-15 4.647842902271867E-13 2.938543163605784E-10 -2.937421873601323E-10 1.229835615952953E-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 ] 2021-Jan-17 10:52 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin