+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   469321 (1999 TN306) Classification: Main-belt Asteroid          SPK-ID: 2469321 [ 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 8 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .164712609032571 1.8458e-07   a 2.63689220186663 3.5323e-08 au q 2.202562807559536 5.0395e-07 au i 12.3760345116817 1.7612e-05 deg node 352.3118350683416 3.0483e-05 deg peri 327.637926878262 6.7324e-05 deg M 324.2983518646481 4.5356e-05 deg tp 2459155.603913310464 (2020-Nov-02.10391331) 0.00019593 TDB period 1564.000871334471 4.28 3.1426e-05 8.604e-08 d yr n .2301788998959015 4.6251e-09 deg/d Q 3.071221596173723 4.1141e-08 au   Orbit Determination Parameters    # obs. used (total)      55      data-arc span      6255 days (17.13 yr)      first obs. used      1999-09-18      last obs. used      2016-11-02      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .60858      source      ORB      producer      Otto Matic      solution date      2017-Apr-09 07:43:48   Additional Information  Earth MOID = 1.20112 au   Jupiter MOID = 2.31451 au   T_jup = 3.345  [ 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 17.6   n/a MPO392225   469321 (1999 TN306)          Discovered 1999-Sep-18 by Spacewatch at Kitt Peak Reference: Last Updated: 2016-08-22 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-26 10:32 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin