+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   437226 (2012 XJ4) Classification: Main-belt Asteroid          SPK-ID: 2437226 [ 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 14 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2706466901209506 8.2078e-08   a 2.5342976290406 2.8703e-08 au q 1.848398363959389 2.088e-07 au i 11.25233599787265 1.1201e-05 deg node 205.6355214595384 4.3716e-05 deg peri 149.9384343407574 5.9446e-05 deg M 357.9176346956137 3.8728e-05 deg tp 2459009.023918156484 (2020-Jun-08.52391816) 0.00015857 TDB period 1473.617779680824 4.03 2.5035e-05 6.854e-08 d yr n .2442967267115722 4.1503e-09 deg/d Q 3.220196894121811 3.6472e-08 au   Orbit Determination Parameters    # obs. used (total)      188      data-arc span      5878 days (16.09 yr)      first obs. used      2003-04-28      last obs. used      2019-06-01      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .56601      source      ORB      producer      Otto Matic      solution date      2020-Feb-26 10:09:07   Additional Information  Earth MOID = .85437 au   Jupiter MOID = 2.28392 au   T_jup = 3.371  [ 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 16.3   n/a MPO477050   437226 (2012 XJ4)          Discovered 2003-Apr-28 by Spacewatch at Kitt Peak Reference: Last Updated: 2015-06-04 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Sep-21 17:22 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin