+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   441672 (2008 XU38) Classification: Main-belt Asteroid          SPK-ID: 2441672 [ 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 10 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .02606260220227821 7.6553e-08   a 2.521368254313469 3.9033e-08 au q 2.455654836495845 1.8419e-07 au i 3.072198781613302 8.2119e-06 deg node 44.46383554629298 0.00018736 deg peri 41.35678498628968 0.0003505 deg M 302.1150738697864 0.00030594 deg tp 2459235.634215630490 (2021-Jan-21.13421563) 0.0012461 TDB period 1462.355111874165 4.00 3.3958e-05 9.297e-08 d yr n .2461782347371298 5.7165e-09 deg/d Q 2.587081672131094 4.005e-08 au   Orbit Determination Parameters    # obs. used (total)      80      data-arc span      6331 days (17.33 yr)      first obs. used      2000-12-22      last obs. used      2018-04-23      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .64302      source      ORB      producer      Otto Matic      solution date      2018-May-07 07:03:22   Additional Information  Earth MOID = 1.47249 au   Jupiter MOID = 2.44548 au   T_jup = 3.453  [ show covariance matrix ] [ 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 17.6   n/a MPO440827   441672 (2008 XU38)          Discovered 2008-Dec-02 by Spacewatch at Kitt Peak Reference: Last Updated: 2015-09-02 [ hide close-approach data ] Close-Approach Data   ...sorted by Date/Time (TDB) Date/Time (TDB) Time Uncertainty (days_HH:MM) Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified 2047-Oct-18 23:17 00:03 Amphi 0.00105706699427434 0.00104058538042806 0.00107365852609788 1.7631511594153 1.76314807493956 2469002.470034423 2.52550378396495 982.623692208299 61.5745385857713 -33.2417260218023 1408.84345773596 T 10 CATAB v2.0e-lin.ifort 2018-May-07 07:03:24 2018-Dec-18 03:18 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Sep-21 20:06 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin