+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 16 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2047314584853405 4.2355e-08   a 2.389381914383207 1.2941e-08 au q 1.900200270173038 9.9498e-08 au i 10.72602099360468 4.509e-06 deg node 52.16160459324139 2.4332e-05 deg peri 50.51477077794399 2.9167e-05 deg M 98.6134285980049 1.1453e-05 deg tp 2458830.960945807259 (2019-Dec-13.46094581) 4.3612e-05 TDB period 1349.046082270362 3.69 1.0959e-05 3e-08 d yr n .2668552280987629 2.1679e-09 deg/d Q 2.878563558593376 1.559e-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 = .935808 au   Jupiter MOID = 2.3591 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 17.29   n/a E2021B25   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-Apr-12 14:04 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin