+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   259122 (2002 XH29) Classification: Main-belt Asteroid          SPK-ID: 2259122 [ 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 21 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .08442924218529455 4.2152e-08   a 2.573850899210301 1.6182e-08 au q 2.356542618292036 1.1064e-07 au i 23.01710054761844 4.7619e-06 deg node 112.0988728704669 1.6306e-05 deg peri 2.887370618620402 6.2162e-05 deg M 79.07569915137051 5.9294e-05 deg tp 2458669.205638766528 (2019-Jul-04.70563877) 0.00024741 TDB period 1508.25059182525 4.13 1.4224e-05 3.894e-08 d yr n .2386871266294922 2.251e-09 deg/d Q 2.791159180128565 1.7548e-08 au   Orbit Determination Parameters    # obs. used (total)      567      data-arc span      7786 days (21.32 yr)      first obs. used      1999-02-18      last obs. used      2020-06-13      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55672      source      ORB      producer      Otto Matic      solution date      2020-Nov-11 23:12:15   Additional Information  Earth MOID = 1.37321 au   Jupiter MOID = 2.33326 au   T_jup = 3.312  [ 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 15.5   n/a MPO418378   259122 (2002 XH29)          Discovered 2002-Dec-05 by Spacewatch at Kitt Peak Reference: 20110119/Numbers.arc Last Updated: 2011-01-25 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-22 04:48 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin