+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 12 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .02624111796487151 6.7661e-08   a 2.52190333793162 2.4734e-08 au q 2.455725774944953 1.7299e-07 au i 3.071927922314561 6.9688e-06 deg node 44.46321516162856 0.00015076 deg peri 41.13417493086386 0.00020975 deg M 351.5681896086713 0.00014571 deg tp 2459234.761739812838 (2021-Jan-20.26173981) 0.00059204 TDB period 1462.820647070769 4.00 2.152e-05 5.892e-08 d yr n .2460998897717799 3.6204e-09 deg/d Q 2.588080900918287 2.5383e-08 au   Orbit Determination Parameters    # obs. used (total)      101      data-arc span      7299 days (19.98 yr)      first obs. used      2000-12-22      last obs. used      2020-12-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .57053      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 17:43:01   Additional Information  Earth MOID = 1.47211 au   Jupiter MOID = 2.44426 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 12 CATAB v2.0f-lin.ifort 2021-Feb-24 17:43:02 2021-Feb-24 17:43 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-08 16:12 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin