+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   78446 (2002 RT19) Classification: Main-belt Asteroid          SPK-ID: 2078446 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ 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 .1954522849144238 5.5854e-08   a 3.086894749724383 2.2776e-08 au q 2.483554117600414 1.8017e-07 au i 3.05869506776685 5.5435e-06 deg node 109.6054436850129 0.00011179 deg peri 262.6220435568362 0.00011264 deg M 82.87588639860537 1.3964e-05 deg tp 2458544.455895588776 (2019-Mar-01.95589559) 7.4853e-05 TDB period 1980.984876570846 5.42 2.1924e-05 6.002e-08 d yr n .1817277881611961 2.0113e-09 deg/d Q 3.690235381848352 2.7228e-08 au   Orbit Determination Parameters    # obs. used (total)      495      data-arc span      10400 days (28.47 yr)      first obs. used      1991-09-04      last obs. used      2020-02-24      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53465      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 21:26:50   Additional Information  Earth MOID = 1.48615 au   Jupiter MOID = 1.77794 au   T_jup = 3.194  [ hide covariance matrix ] Orbital Elements at Epoch 2456724.5 (2014-Mar-08.0) TDB Reference: JPL 21 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1895778591545867 5.4969e-08   q 2.503671423280601 1.7588e-07 au tp 2456549.491164215480 (2013-Sep-13.99116422) 7.556e-05 TDB node 109.9033238351525 0.00011109 deg peri 260.7519143504956 0.00011208 deg i 3.064564913713561 5.5636e-06 deg   Orbit Determination Parameters    # obs. used (total)      495      data-arc span      10400 days (28.47 yr)      first obs. used      1991-09-04      last obs. used      2020-02-24      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53465      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 21:26:50   Additional Information  Jupiter MOID = 1.77794 au   T_jup = 3.194  Orbit Covariance (6×6)   e q tp node peri i e 3.021644782941147E-15 -9.621781009153658E-15 -1.160242636644198E-12 -1.095358569601076E-14 -2.553411725901358E-13 -2.197478182489764E-15 q -9.621781009153658E-15 3.093325895901975E-14 3.724682576481929E-12 3.674126246944468E-14 8.229571845395295E-13 7.482174638814662E-15 tp -1.160242636644198E-12 3.724682576481929E-12 5.709366538892724E-9 -1.616136993659993E-11 1.178780155699556E-9 3.421400244870899E-13 node -1.095358569601076E-14 3.674126246944468E-14 -1.616136993659993E-11 1.234084100035226E-8 -1.232549410632942E-8 1.816595010763069E-10 peri -2.553411725901358E-13 8.229571845395295E-13 1.178780155699556E-9 -1.232549410632942E-8 1.256207982271677E-8 -1.813020233816353E-10 i -2.197478182489764E-15 7.482174638814662E-15 3.421400244870899E-13 1.816595010763069E-10 -1.813020233816353E-10 3.095348547510694E-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 15.0   n/a MPO412653   78446 (2002 RT19)          Discovered 2002-Sep-04 by LONEOS at Anderson Mesa Reference: 20040415/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-23 09:35 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin