+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   259121 (2002 XN26) Classification: Inner Main-belt Asteroid          SPK-ID: 2259121 [ 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 .1104852863499967 7.8246e-08   a 1.90280565412996 9.7038e-09 au q 1.692573626565019 1.4469e-07 au i 17.98925381458182 5.0171e-06 deg node 262.6877534180695 2.0108e-05 deg peri 208.8921392205455 4.7041e-05 deg M 206.3913403504168 4.1448e-05 deg tp 2459409.575316993372 (2021-Jul-14.07531699) 0.00011224 TDB period 958.7162237699636 2.62 7.3338e-06 2.008e-08 d yr n .3755021465938801 2.8724e-09 deg/d Q 2.113037681694902 1.0776e-08 au   Orbit Determination Parameters    # obs. used (total)      296      data-arc span      6582 days (18.02 yr)      first obs. used      2002-11-07      last obs. used      2020-11-14      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49148      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 00:16:34   Additional Information  Earth MOID = .721409 au   Jupiter MOID = 3.07856 au   T_jup = 3.878  [ 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 17.5   n/a MPO470760   259121 (2002 XN26)          Discovered 2002-Dec-03 by NEAT at Palomar Reference: 20110119/Numbers.arc Last Updated: 2011-01-25 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-22 23:45 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin