+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   102914 (1999 XT22) Classification: Main-belt Asteroid          SPK-ID: 2102914 [ 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 23 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .177337082442194 5.3812e-08   a 2.419883040111892 1.054e-08 au q 1.990748041927102 1.2986e-07 au i 3.336960805299506 4.7572e-06 deg node 70.69850731708129 7.8967e-05 deg peri 334.6950806753479 7.9753e-05 deg M 215.9185002979265 1.1657e-05 deg tp 2459750.795181514990 (2022-Jun-20.29518152) 4.6289e-05 TDB period 1374.959767597044 3.76 8.9835e-06 2.46e-08 d yr n .261825842823864 1.7107e-09 deg/d Q 2.849018038296682 1.241e-08 au   Orbit Determination Parameters    # obs. used (total)      752      data-arc span      9036 days (24.74 yr)      first obs. used      1995-08-29      last obs. used      2020-05-25      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .58662      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 19:51:52   Additional Information  Earth MOID = .999902 au   Jupiter MOID = 2.53957 au   T_jup = 3.490  [ 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 15.91   n/a E2021B55   102914 (1999 XT22)          Discovered 1999-Dec-06 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-04 20:25 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin