+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   74903 (1999 TT124) Classification: Main-belt Asteroid          SPK-ID: 2074903 [ 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 21 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1201795361935187 4.122e-08   a 2.33760009655076 1.1335e-08 au q 2.056668401141366 9.9496e-08 au i 6.693344668737677 4.998e-06 deg node 324.1429635910708 4.0011e-05 deg peri 334.4470102966724 4.5689e-05 deg M 339.7954958449943 2.2e-05 deg tp 2459073.765488166236 (2020-Aug-12.26548817) 7.9797e-05 TDB period 1305.430489038269 3.57 9.4954e-06 2.6e-08 d yr n .2757710985172543 2.0059e-09 deg/d Q 2.618531791960155 1.2698e-08 au   Orbit Determination Parameters    # obs. used (total)      716      data-arc span      8113 days (22.21 yr)      first obs. used      1998-04-01      last obs. used      2020-06-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .56696      source      ORB      producer      Otto Matic      solution date      2020-Jun-23 23:51:07   Additional Information  Earth MOID = 1.04345 au   Jupiter MOID = 2.58459 au   T_jup = 3.548  [ 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 15.9   n/a MPO351370   74903 (1999 TT124)          Discovered 1999-Oct-04 by LINEAR at Socorro Reference: 20040415/Numbers.arc Last Updated: 2004-04-19 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Aug-09 05:49 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin