+ 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 17 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1575547581970226 4.9046e-08   a 2.251047851965342 6.8954e-09 au q 1.896384551959015 1.1085e-07 au i 4.935283611528876 5.0438e-06 deg node 22.4776811093311 3.7374e-05 deg peri 350.76187647276 3.8959e-05 deg M 317.7157548526828 9.5773e-06 deg tp 2459145.394399357714 (2020-Oct-22.89439936) 3.2681e-05 TDB period 1233.603286213247 3.38 5.6681e-06 1.552e-08 d yr n .2918280163674666 1.3409e-09 deg/d Q 2.605711151971668 7.9818e-09 au   Orbit Determination Parameters    # obs. used (total)      790      data-arc span      9367 days (25.65 yr)      first obs. used      1995-03-23      last obs. used      2020-11-13      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51223      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 05:07:56   Additional Information  Earth MOID = .897172 au   Jupiter MOID = 2.85752 au   T_jup = 3.606  [ hide covariance matrix ] Orbital Elements at Epoch 2457917.5 (2017-Jun-13.0) TDB Reference: JPL 17 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1585017078918285 4.8993e-08   q 1.893966206591078 1.1084e-07 au tp 2457912.597479939963 (2017-Jun-08.09747994) 3.3919e-05 TDB node 22.53280035137182 3.7339e-05 deg peri 350.9017505998074 3.8901e-05 deg i 4.938528523254812 5.0457e-06 deg   Orbit Determination Parameters    # obs. used (total)      790      data-arc span      9367 days (25.65 yr)      first obs. used      1995-03-23      last obs. used      2020-11-13      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51223      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 05:07:56   Additional Information  Jupiter MOID = 2.85752 au   T_jup = 3.606  Orbit Covariance (6×6)   e q tp node peri i e 2.400361868523632E-15 -5.423194016456317E-15 -5.46622845466613E-13 -2.515472348557538E-14 -1.382789627966714E-13 -4.567363657014456E-15 q -5.423194016456317E-15 1.228626693083772E-14 1.160874790792673E-12 5.614075190256215E-14 2.90111575000092E-13 1.039799854625944E-14 tp -5.46622845466613E-13 1.160874790792673E-12 1.150477630917323E-9 7.560569964005898E-12 3.775622424725731E-10 1.294592947993717E-12 node -2.515472348557538E-14 5.614075190256215E-14 7.560569964005898E-12 1.394194902385536E-9 -1.386314220243611E-9 -9.998367855975362E-11 peri -1.382789627966714E-13 2.90111575000092E-13 3.775622424725731E-10 -1.386314220243611E-9 1.513289617848084E-9 1.000481739102663E-10 i -4.567363657014456E-15 1.039799854625944E-14 1.294592947993717E-12 -9.998367855975362E-11 1.000481739102663E-10 2.545896763392736E-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 ] 2021-Jan-25 19:49 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin