+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   469386 (2001 SY231) Classification: Main-belt Asteroid          SPK-ID: 2469386 [ 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 11 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1668182865159729 6.9883e-08   a 2.760503785497222 2.6281e-08 au q 2.300001274079718 2.0338e-07 au i 5.007458846426682 7.6537e-06 deg node 20.50181615751569 8.3862e-05 deg peri 358.0954630666014 8.892e-05 deg M 24.97480778655459 2.6526e-05 deg tp 2458884.280072255253 (2020-Feb-04.78007226) 0.00012323 TDB period 1675.255094881391 4.59 2.3923e-05 6.55e-08 d yr n .2148926459617712 3.0688e-09 deg/d Q 3.221006296914725 3.0665e-08 au   Orbit Determination Parameters    # obs. used (total)      77      data-arc span      6947 days (19.02 yr)      first obs. used      2001-09-19      last obs. used      2020-09-26      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .57616      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 04:20:44   Additional Information  Earth MOID = 1.30212 au   Jupiter MOID = 2.24173 au   T_jup = 3.316  [ 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 17.1   n/a MPO358041   469386 (2001 SY231)          Discovered 2001-Sep-19 by LINEAR at Socorro Reference: Last Updated: 2016-08-22 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-26 16:45 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin