+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   103097 (1999 XJ168) Classification: Main-belt Asteroid          SPK-ID: 2103097 [ 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 24 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2247327371067519 2.9505e-08   a 2.581730187960704 8.993e-09 au q 2.001530896349166 7.4279e-08 au i 3.380031869651908 4.3016e-06 deg node 359.8810954816039 8.2658e-05 deg peri 42.45251376776756 8.3941e-05 deg M 38.11142961971169 1.4824e-05 deg tp 2459040.095168388666 (2020-Jul-09.59516839) 6.2035e-05 TDB period 1515.18166482565 4.15 7.9168e-06 2.168e-08 d yr n .2375952721427794 1.2414e-09 deg/d Q 3.161929479572242 1.1014e-08 au   Orbit Determination Parameters    # obs. used (total)      946      data-arc span      7772 days (21.28 yr)      first obs. used      1999-10-12      last obs. used      2021-01-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49701      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 08:33:19   Additional Information  Earth MOID = 1.01059 au   Jupiter MOID = 2.26572 au   T_jup = 3.386  [ 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 15.65   n/a E2021B55   103097 (1999 XJ168)          Discovered 1999-Dec-10 by LINEAR at Socorro Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Mar-09 02:24 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin