+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   100689 (1997 YW6) Classification: Main-belt Asteroid          SPK-ID: 2100689 [ 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 .3180058025658813 6.6211e-08   a 2.609456455071975 1.5423e-08 au q 1.779634160816092 1.6845e-07 au i 12.52157882105458 5.8441e-06 deg node 107.5413654028807 2.4203e-05 deg peri 283.2187106568812 2.624e-05 deg M 159.1677940725419 1.4731e-05 deg tp 2458319.767940405822 (2018-Jul-20.26794041) 5.8831e-05 TDB period 1539.655323376628 4.22 1.365e-05 3.737e-08 d yr n .2338185660998994 2.073e-09 deg/d Q 3.439278749327858 2.0328e-08 au   Orbit Determination Parameters    # obs. used (total)      616      data-arc span      8161 days (22.34 yr)      first obs. used      1997-12-25      last obs. used      2020-04-29      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53562      source      ORB      producer      Otto Matic      solution date      2020-May-20 17:54:52   Additional Information  Earth MOID = .834697 au   Jupiter MOID = 2.15878 au   T_jup = 3.305  [ 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 14.9   n/a MPO325156   100689 (1997 YW6)          Discovered 1997-Dec-25 by Sato, N. at Chichibu Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Oct-20 14:48 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin