+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   173537 (2000 WJ108) Classification: Main-belt Asteroid          SPK-ID: 2173537 [ 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 13 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1575547563197229 4.9653e-08   a 2.251047861904388 1.4142e-08 au q 1.896384564558009 1.1376e-07 au i 4.935284575751719 5.4105e-06 deg node 22.47772750126492 5.524e-05 deg peri 350.7618425569832 5.8405e-05 deg M 317.7157363596136 2.5141e-05 deg tp 2459145.394463687095 (2020-Oct-22.89446369) 8.7201e-05 TDB period 1233.603294383335 3.38 1.1625e-05 3.183e-08 d yr n .2918280144347052 2.7501e-09 deg/d Q 2.605711159250767 1.637e-08 au   Orbit Determination Parameters    # obs. used (total)      494      data-arc span      8831 days (24.18 yr)      first obs. used      1995-03-23      last obs. used      2019-05-27      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .58871      source      ORB      producer      Otto Matic      solution date      2020-Feb-24 17:05:34   Additional Information  Earth MOID = .897172 au   Jupiter MOID = 2.85752 au   T_jup = 3.606  [ hide covariance matrix ] Orbital Elements at Epoch 2456833.5 (2014-Jun-25.0) TDB Reference: JPL 13 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1573160797826667 4.9454e-08   q 1.896686353311199 1.1316e-07 au tp 2456678.705637676000 (2014-Jan-21.20563768) 7.15e-05 TDB node 22.58416314162203 5.5239e-05 deg peri 350.758890281884 5.8432e-05 deg i 4.935985039540899 5.4087e-06 deg   Orbit Determination Parameters    # obs. used (total)      494      data-arc span      8831 days (24.18 yr)      first obs. used      1995-03-23      last obs. used      2019-05-27      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .58871      source      ORB      producer      Otto Matic      solution date      2020-Feb-24 17:05:34   Additional Information  Jupiter MOID = 2.85752 au   T_jup = 3.606  Orbit Covariance (6×6)   e q tp node peri i e 2.445693413370027E-15 -5.56699660955371E-15 -8.429206405296176E-13 6.254767052393978E-15 -2.490395806880076E-13 -6.765010242739482E-16 q -5.56699660955371E-15 1.280567249917764E-14 2.409127107917012E-12 -1.607301801934309E-14 6.972867526189328E-13 1.78579269871514E-15 tp -8.429206405296176E-13 2.409127107917012E-12 5.112196637696229E-9 -9.307984631847636E-12 1.382461893225161E-9 9.012636784947521E-13 node 6.254767052393978E-15 -1.607301801934309E-14 -9.307984631847636E-12 3.051356349895104E-9 -3.042149165015251E-9 -7.870856152858406E-11 peri -2.490395806880076E-13 6.972867526189328E-13 1.382461893225161E-9 -3.042149165015251E-9 3.41424409050852E-9 7.869824186679197E-11 i -6.765010242739482E-16 1.78579269871514E-15 9.012636784947521E-13 -7.870856152858406E-11 7.869824186679197E-11 2.92538730607822E-11 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 16.5   n/a MPO475469   diameter diameter 1.237 km 0.223 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.349   0.177 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   173537 (2000 WJ108)          Discovered 2000-Nov-20 by LINEAR at Socorro Reference: 20080122/Numbers.arc Last Updated: 2008-01-28 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Aug-12 12:12 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin