+ 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 16 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2047853708782201 4.2351e-08   a 2.389745463930851 1.2966e-08 au q 1.900360552795227 9.9516e-08 au i 10.72551826121003 4.5088e-06 deg node 52.16402384299872 2.4333e-05 deg peri 50.55079941135123 2.9164e-05 deg M 45.20520936900009 1.1541e-05 deg tp 2458831.061585070251 (2019-Dec-13.56158507) 4.3603e-05 TDB period 1349.353984333927 3.69 1.0982e-05 3.007e-08 d yr n .2667943357929941 2.1713e-09 deg/d Q 2.879130375066475 1.5621e-08 au   Orbit Determination Parameters    # obs. used (total)      373      data-arc span      5581 days (15.28 yr)      first obs. used      2004-11-30      last obs. used      2020-03-12      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52681      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 07:54:12   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 ] 2021-Jan-26 10:19 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin