+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   58147 (1986 WK) Classification: Main-belt Asteroid          SPK-ID: 2058147 [ 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 .3713745926226198 3.8337e-08   a 2.77346448044741 1.3691e-08 au q 1.743470238867947 1.1059e-07 au i 6.806207951772658 3.8366e-06 deg node 33.35530714644123 4.1711e-05 deg peri 335.0443344512354 4.2115e-05 deg M 111.7474791126643 7.6003e-06 deg tp 2458476.818088404473 (2018-Dec-24.31808840) 3.3335e-05 TDB period 1687.067034275712 4.62 1.2492e-05 3.42e-08 d yr n .2133880828004883 1.5801e-09 deg/d Q 3.803458722026872 1.8776e-08 au   Orbit Determination Parameters    # obs. used (total)      1173      data-arc span      17407 days (47.66 yr)      first obs. used      1972-10-13      last obs. used      2020-06-10      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .5105      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 22:52:10   Additional Information  Earth MOID = .74597 au   Jupiter MOID = 1.66339 au   T_jup = 3.222  [ 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 14.3   n/a MPO452959   diameter diameter 4.621 km 0.052 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.111   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   58147 (1986 WK)          Discovered 1986-Nov-29 by Niijima, T., Urata, T. at Ojima Reference: 20030614/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1986 WK = 1972 TP8 = 2000 XB17  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-20 16:01 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin