+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   249988 (2001 WJ58) Classification: Main-belt Asteroid          SPK-ID: 2249988 [ 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 12 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06263443108782424 8.6428e-08   a 2.834296159912768 3.2518e-08 au q 2.656771632402227 2.4845e-07 au i 1.758718582906942 1.0708e-05 deg node 14.90461109235661 0.00016834 deg peri 24.37085425891389 0.0001847 deg M 324.6108375430856 7.2558e-05 deg tp 2459171.830251786745 (2020-Nov-18.33025179) 0.00035147 TDB period 1742.875116593139 4.77 2.9994e-05 8.212e-08 d yr n .2065552468863661 3.5547e-09 deg/d Q 3.011820687423309 3.4554e-08 au   Orbit Determination Parameters    # obs. used (total)      194      data-arc span      6023 days (16.49 yr)      first obs. used      2001-10-15      last obs. used      2018-04-12      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .5758      source      ORB      producer      Otto Matic      solution date      2019-Jul-13 15:50:14   Additional Information  Earth MOID = 1.66428 au   Jupiter MOID = 2.25285 au   T_jup = 3.308  [ 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 16.3   n/a MPO446306   249988 (2001 WJ58)          Discovered 2001-Nov-19 by LINEAR at Socorro Reference: 20100923/Numbers.arc Last Updated: 2010-09-27 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Aug-06 08:02 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin