+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   259131 (2002 XD49) Classification: Main-belt Asteroid          SPK-ID: 2259131 [ 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 .2613819531734224 4.9396e-08   a 2.646818491774529 1.2427e-08 au q 1.954987904698971 1.3424e-07 au i 12.64898924286296 6.6061e-06 deg node 333.9753746323047 2.3027e-05 deg peri 88.27951437442512 2.9131e-05 deg M 25.37718107148395 1.2878e-05 deg tp 2458889.627064852592 (2020-Feb-10.12706485) 5.6299e-05 TDB period 1572.840440419059 4.31 1.1077e-05 3.033e-08 d yr n .2288852643591003 1.6119e-09 deg/d Q 3.338649078850088 1.5675e-08 au   Orbit Determination Parameters    # obs. used (total)      377      data-arc span      6360 days (17.41 yr)      first obs. used      2002-10-06      last obs. used      2020-03-05      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51598      source      ORB      producer      Otto Matic      solution date      2020-Nov-11 23:12:12   Additional Information  Earth MOID = 1.01512 au   Jupiter MOID = 2.19874 au   T_jup = 3.309  [ 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 16.1   n/a MPO232353   259131 (2002 XD49)          Discovered 2002-Dec-10 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-17 23:25 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin