+ 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 10 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2149414755308337 5.391e-08   a 2.603611367072688 2.5043e-08 au q 2.043987298125233 1.3858e-07 au i 11.84830314726316 9.3271e-06 deg node 252.6739143630736 2.6989e-05 deg peri 94.22581596281407 3.9439e-05 deg M 347.1476687717176 3.4268e-05 deg tp 2459055.282528599324 (2020-Jul-24.78252860) 0.00014669 TDB period 1534.485063095609 4.20 2.214e-05 6.062e-08 d yr n .2346063892428842 3.3849e-09 deg/d Q 3.163235436020142 3.0426e-08 au   Orbit Determination Parameters    # obs. used (total)      228      data-arc span      7202 days (19.72 yr)      first obs. used      1999-09-13      last obs. used      2019-06-02      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .59877      source      ORB      producer      Otto Matic      solution date      2020-Feb-25 23:00:29   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-Aug-04 22:51 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin