+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   259137 (2002 XT68) Classification: Inner Main-belt Asteroid          SPK-ID: 2259137 [ 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 12 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .05620668129677436 9.3095e-08   a 1.887540548462765 8.4185e-09 au q 1.78144815842058 1.7634e-07 au i 18.38196022056334 5.5918e-06 deg node 262.8416494784 1.564e-05 deg peri 82.99904851740047 6.1503e-05 deg M 345.4784249077078 5.7303e-05 deg tp 2459038.707980726884 (2020-Jul-08.20798073) 0.0001507 TDB period 947.2025571784694 2.59 6.3369e-06 1.735e-08 d yr n .3800665414928454 2.5427e-09 deg/d Q 1.99363293850495 8.8917e-09 au   Orbit Determination Parameters    # obs. used (total)      447      data-arc span      7796 days (21.34 yr)      first obs. used      1999-07-13      last obs. used      2020-11-15      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49302      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 00:16:35   Additional Information  Earth MOID = .830892 au   Jupiter MOID = 3.19744 au   T_jup = 3.898  [ 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 17.1   n/a MPO418378   259137 (2002 XT68)          Discovered 2002-Dec-11 by LINEAR at Socorro Reference: 20110119/Numbers.arc Last Updated: 2011-01-25 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-22 04:22 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin