+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   447136 (2004 XN131) Classification: Main-belt Asteroid          SPK-ID: 2447136 [ 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 15 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2047853690303823 4.2528e-08   a 2.389745464219078 1.3023e-08 au q 1.900360557440292 1.0002e-07 au i 10.72551867898646 4.6719e-06 deg node 52.16402379720206 2.4372e-05 deg peri 50.5507999461674 2.9215e-05 deg M 45.20520876939339 1.1629e-05 deg tp 2458831.061587287046 (2019-Dec-13.56158729) 4.3916e-05 TDB period 1349.353984578044 3.69 1.103e-05 3.02e-08 d yr n .2667943357447271 2.1808e-09 deg/d Q 2.879130370997864 1.569e-08 au   Orbit Determination Parameters    # obs. used (total)      349      data-arc span      5543 days (15.18 yr)      first obs. used      2004-11-30      last obs. used      2020-02-03      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53837      source      ORB      producer      Otto Matic      solution date      2020-Feb-26 11:07:57   Additional Information  Earth MOID = .936206 au   Jupiter MOID = 2.35853 au   T_jup = 3.481  [ 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 MPO456117   447136 (2004 XN131)          Discovered 2004-Dec-11 by LINEAR at Socorro Reference: Last Updated: 2015-10-28 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Aug-05 20:06 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin