+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   344110 (1999 TR305) Classification: Main-belt Asteroid          SPK-ID: 2344110 [ 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 13 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2149414929740368 5.3164e-08   a 2.603611398337462 1.2953e-08 au q 2.043987277254588 1.3796e-07 au i 11.84831772906917 5.7632e-06 deg node 252.6739097777871 2.6482e-05 deg peri 94.22585835167835 3.0429e-05 deg M 347.1476208332546 1.3382e-05 deg tp 2459055.282733921799 (2020-Jul-24.78273392) 5.7043e-05 TDB period 1534.485090735292 4.20 1.1451e-05 3.135e-08 d yr n .2346063850170717 1.7507e-09 deg/d Q 3.163235519420335 1.5737e-08 au   Orbit Determination Parameters    # obs. used (total)      478      data-arc span      7712 days (21.11 yr)      first obs. used      1999-09-13      last obs. used      2020-10-24      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49274      source      ORB      producer      Otto Matic      solution date      2020-Nov-11 17:03:39   Additional Information  Earth MOID = 1.07854 au   Jupiter MOID = 2.42171 au   T_jup = 3.351  [ 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 16.3   n/a MPO434164   344110 (1999 TR305)          Discovered 1999-Oct-03 by CSS at Catalina Reference: 20121128/Numbers.arc Last Updated: 2012-12-03 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Dec-02 00:10 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin