+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   190827 (2001 SJ39) Classification: Main-belt Asteroid          SPK-ID: 2190827 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 21 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1860530122185237 3.5383e-08   a 2.353332204168686 8.7138e-09 au q 1.915487658832244 8.5649e-08 au i 2.515396398828063 3.9463e-06 deg node 94.04144080529865 9.5565e-05 deg peri 316.3821975569352 9.6303e-05 deg M 91.65666544144463 1.1842e-05 deg tp 2458864.774108169821 (2020-Jan-16.27410817) 4.2742e-05 TDB period 1318.631007104197 3.61 7.3239e-06 2.005e-08 d yr n .2730104161516605 1.5163e-09 deg/d Q 2.791176749505128 1.0335e-08 au   Orbit Determination Parameters    # obs. used (total)      481      data-arc span      7112 days (19.47 yr)      first obs. used      2001-09-16      last obs. used      2021-03-07      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .55983      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 22:09:17   Additional Information  Earth MOID = .926216 au   Jupiter MOID = 2.5785 au   T_jup = 3.531  [ 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 17.0   n/a MPO446126   190827 (2001 SJ39)          Discovered 2001-Sep-16 by LINEAR at Socorro Reference: 20080917/Numbers.arc Last Updated: 2008-09-19 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-22 20:59 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin