+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .3181506834729234 6.6233e-08   a 2.609176375499262 1.5369e-08 au q 1.779065128332767 1.6853e-07 au i 12.52167727403481 5.8335e-06 deg node 107.5398695936454 2.4205e-05 deg peri 283.2039441977165 2.6234e-05 deg M 205.9652805213828 1.5026e-05 deg tp 2459859.172761996203 (2022-Oct-06.67276200) 6.8622e-05 TDB period 1539.407447368059 4.21 1.3602e-05 3.724e-08 d yr n .2338562156597954 2.0663e-09 deg/d Q 3.439287622665757 2.0259e-08 au   Orbit Determination Parameters    # obs. used (total)      619      data-arc span      8180 days (22.40 yr)      first obs. used      1997-12-25      last obs. used      2020-05-18      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53482      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 20:04:47   Additional Information  Earth MOID = .833157 au   Jupiter MOID = 2.15994 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 15.02   n/a E2021B55   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 ] 2021-Mar-09 05:12 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin