+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   70640 (1999 TR239) Classification: Main-belt Asteroid          SPK-ID: 2070640 [ 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 15 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1752716733887824 9.341e-08   a 2.556526909212541 1.4097e-08 au q 2.108440159771408 2.4444e-07 au i 7.609718570968937 5.8834e-06 deg node 102.9679262820468 5.6178e-05 deg peri 14.27843458382159 6.1783e-05 deg M 304.5375606344693 2.2953e-05 deg tp 2459230.522566877760 (2021-Jan-16.02256688) 9.4781e-05 TDB period 1493.048719516981 4.09 1.2349e-05 3.381e-08 d yr n .2411173830392248 1.9943e-09 deg/d Q 3.004613658653675 1.6567e-08 au   Orbit Determination Parameters    # obs. used (total)      783      data-arc span      7315 days (20.03 yr)      first obs. used      1999-10-04      last obs. used      2019-10-14      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .58059      source      ORB      producer      Otto Matic      solution date      2019-Nov-07 08:21:30   Additional Information  Earth MOID = 1.12569 au   Jupiter MOID = 2.09933 au   T_jup = 3.403  [ 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 15.2   n/a MPO417316   70640 (1999 TR239)          Discovered 1999-Oct-04 by CSS at Catalina Reference: 20031109/Numbers.arc Last Updated: 2004-04-19 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Sep-29 23:51 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin