+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   102430 (1999 TG204) Classification: Main-belt Asteroid          SPK-ID: 2102430 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1271791403379574 5.679e-08   a 2.368014482935119 1.0747e-08 au q 2.066852436687598 1.3422e-07 au i 6.994769699573716 7.6483e-06 deg node 16.54790666527638 3.0476e-05 deg peri 311.6626980407593 3.9537e-05 deg M 353.6554570888679 2.6413e-05 deg tp 2459223.957017752026 (2021-Jan-09.45701775) 9.77e-05 TDB period 1330.99050774998 3.64 9.0608e-06 2.481e-08 d yr n .2704752572642872 1.8413e-09 deg/d Q 2.66917652918264 1.2114e-08 au   Orbit Determination Parameters    # obs. used (total)      714      data-arc span      9068 days (24.83 yr)      first obs. used      1995-08-30      last obs. used      2020-06-27      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .56821      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 15:41:57   Additional Information  Earth MOID = 1.06206 au   Jupiter MOID = 2.66857 au   T_jup = 3.526  [ hide covariance matrix ] Orbital Elements at Epoch 2456754.5 (2014-Apr-07.0) TDB Reference: JPL 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1267243612576124 5.6351e-08   q 2.067140961724126 1.3306e-07 au tp 2456560.887077520837 (2013-Sep-25.38707752) 9.4349e-05 TDB node 16.65720215050469 3.0518e-05 deg peri 311.1836451288448 3.9621e-05 deg i 6.991211999285053 7.6422e-06 deg   Orbit Determination Parameters    # obs. used (total)      714      data-arc span      9068 days (24.83 yr)      first obs. used      1995-08-30      last obs. used      2020-06-27      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .56821      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 15:41:57   Additional Information  Jupiter MOID = 2.66857 au   T_jup = 3.526  Orbit Covariance (6×6)   e q tp node peri i e 3.175489949996269E-15 -7.479638941746355E-15 3.556642726174949E-12 2.497433904623881E-15 9.136643112832315E-13 2.058082982810442E-15 q -7.479638941746355E-15 1.770366259965794E-14 -8.308411023757985E-12 -6.021228869036061E-15 -2.130466525196405E-12 -4.444206307715652E-15 tp 3.556642726174949E-12 -8.308411023757985E-12 8.901813929560703E-9 4.225924501308962E-12 2.388598609907923E-9 2.230138219695179E-12 node 2.497433904623881E-15 -6.021228869036061E-15 4.225924501308962E-12 9.313494302374137E-10 -9.227307740626232E-10 -2.286959538228428E-11 peri 9.136643112832315E-13 -2.130466525196405E-12 2.388598609907923E-9 -9.227307740626232E-10 1.56985781598705E-9 2.324589143571492E-11 i 2.058082982810442E-15 -4.444206307715652E-15 2.230138219695179E-12 -2.286959538228428E-11 2.324589143571492E-11 5.840374920424591E-11 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 15.85   n/a E2021B55   102430 (1999 TG204)          Discovered 1999-Oct-13 by LINEAR at Socorro Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-15 08:55 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin