+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   344309 (2001 UX144) Classification: Main-belt Asteroid          SPK-ID: 2344309 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 11 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1764215386725854 4.7188e-08   a 2.356834234849281 1.0028e-08 au q 1.941037912740945 1.1174e-07 au i 3.053123268899959 4.8077e-06 deg node 64.1249214574716 9.1239e-05 deg peri 320.4479721911755 9.3715e-05 deg M 61.68980261975697 1.5878e-05 deg tp 2458774.034075890941 (2019-Oct-17.53407589) 5.8638e-05 TDB period 1321.5755151914 3.62 8.4348e-06 2.309e-08 d yr n .2724021411276389 1.7386e-09 deg/d Q 2.772630556957616 1.1797e-08 au   Orbit Determination Parameters    # obs. used (total)      240      data-arc span      6678 days (18.28 yr)      first obs. used      2001-10-14      last obs. used      2020-01-26      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .50923      source      ORB      producer      Otto Matic      solution date      2020-Feb-25 23:02:10   Additional Information  Earth MOID = .946114 au   Jupiter MOID = 2.67845 au   T_jup = 3.531  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 17.6   n/a MPO418776   344309 (2001 UX144)          Discovered 2001-Oct-23 by LINEAR at Socorro Reference: 20121128/Numbers.arc Last Updated: 2012-12-03 [ hide close-approach data ] Close-Approach Data   ...sorted by Date/Time (TDB) Date/Time (TDB) Time Uncertainty (days_HH:MM) Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified 2135-Mar-03 15:16 < 00:01 Hebe 0.028691640218438 0.0286829939790196 0.0287003179989958 5.44744239621118 5.44744235643624 2500914.135872841 0.730560334998988 1575.89454938694 62.5572939885646 74.2569933095857 66018.9848414998 T 11 CATAB v2.0f-lin.ifort 2020-Feb-25 23:02:24 2020-Feb-25 23:02 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Sep-22 18:40 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin