+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   103102 (1999 XF174) Classification: Main-belt Asteroid          SPK-ID: 2103102 [ 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 17 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1066008678710372 6.3779e-08   a 2.316630488305879 1.0064e-08 au q 2.069675667715968 1.4657e-07 au i 7.698432187920723 4.6405e-06 deg node 73.55455341020146 4.9956e-05 deg peri 104.5282282315984 5.4289e-05 deg M 283.3649053685112 2.2071e-05 deg tp 2459474.662957009775 (2021-Sep-17.16295701) 7.9597e-05 TDB period 1287.904255852052 3.53 8.3925e-06 2.298e-08 d yr n .2795238841429492 1.8215e-09 deg/d Q 2.563585308895791 1.1137e-08 au   Orbit Determination Parameters    # obs. used (total)      496      data-arc span      16304 days (44.64 yr)      first obs. used      1976-05-29      last obs. used      2021-01-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .57746      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 08:33:19   Additional Information  Earth MOID = 1.08771 au   Jupiter MOID = 2.42138 au   T_jup = 3.561  [ 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 16.1   n/a MPO502732   103102 (1999 XF174)          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-Feb-28 20:12 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin