+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   101458 (1998 WJ6) Classification: Main-belt Asteroid          SPK-ID: 2101458 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 22 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2941996571328099 7.0333e-08   a 2.53244902122399 7.8382e-09 au q 1.787403387473572 1.8185e-07 au i 4.050443193730096 4.8393e-06 deg node 60.87502932841193 6.713e-05 deg peri 326.12557512621 6.75e-05 deg M 136.7132339580277 6.9517e-06 deg tp 2458441.492608640981 (2018-Nov-18.99260864) 2.6698e-05 TDB period 1472.005709052499 4.03 6.834e-06 1.871e-08 d yr n .2445642688653191 1.1354e-09 deg/d Q 3.277494654974408 1.0144e-08 au   Orbit Determination Parameters    # obs. used (total)      1188      data-arc span      9268 days (25.37 yr)      first obs. used      1994-12-03      last obs. used      2020-04-18      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49816      source      ORB      producer      Otto Matic      solution date      2020-May-20 17:59:48   Additional Information  Earth MOID = .793899 au   Jupiter MOID = 2.17512 au   T_jup = 3.385  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 16.0   n/a MPO469021   diameter diameter 3.967 km 0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.048   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   101458 (1998 WJ6)          Discovered 1998-Nov-22 by Boeuf, M. at Les Tardieux Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  1998 WJ6 = 2002 NT51  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Dec-03 05:48 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin