+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   226716 (2004 PL19) Classification: Main-belt Asteroid          SPK-ID: 2226716 [ 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 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .130080529191789 7.2175e-08   a 2.675431114198684 2.0195e-08 au q 2.327409619047542 2.0043e-07 au i 9.046938817875535 7.952e-06 deg node 342.5149401374551 2.6944e-05 deg peri 7.668444323678384 3.2719e-05 deg M 205.508326604767 2.0702e-05 deg tp 2459686.448741382398 (2022-Apr-16.94874138) 9.6395e-05 TDB period 1598.413309084417 4.38 1.8098e-05 4.955e-08 d yr n .2252233499020417 2.5501e-09 deg/d Q 3.023452609349826 2.2822e-08 au   Orbit Determination Parameters    # obs. used (total)      385      data-arc span      10450 days (28.61 yr)      first obs. used      1991-09-17      last obs. used      2020-04-27      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .56251      source      ORB      producer      Otto Matic      solution date      2020-May-21 10:29:13   Additional Information  Earth MOID = 1.32139 au   Jupiter MOID = 2.39209 au   T_jup = 3.349  [ 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 15.8   n/a MPO427315   226716 (2004 PL19)          Discovered 2004-Aug-08 by LONEOS at Anderson Mesa Reference: 20091202/Numbers.arc Last Updated: 2009-12-04 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Aug-15 08:49 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin