+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   134220 (2005 WM46) Classification: Main-belt Asteroid          SPK-ID: 2134220 [ 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 25 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .3177311630775849 7.8428e-08   a 2.544937688198639 1.5215e-08 au q 1.736331676567305 2.048e-07 au i 12.98148972740896 4.1532e-06 deg node 116.7591145057842 3.5528e-05 deg peri 250.8548008268118 3.5718e-05 deg M 238.9852561115904 7.6055e-06 deg tp 2459498.982529486882 (2021-Oct-11.48252949) 3.2438e-05 TDB period 1482.907824692467 4.06 1.3298e-05 3.641e-08 d yr n .2427662690866565 2.1771e-09 deg/d Q 3.353543699829972 2.0049e-08 au   Orbit Determination Parameters    # obs. used (total)      751      data-arc span      8761 days (23.99 yr)      first obs. used      1996-06-19      last obs. used      2020-06-14      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .46162      source      ORB      producer      Otto Matic      solution date      2020-Aug-25 10:55:49   Additional Information  Earth MOID = .783546 au   Jupiter MOID = 2.24941 au   T_jup = 3.337  [ 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 15.6   n/a MPO469407   diameter diameter 4.349 km 0.046 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.085   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   134220 (2005 WM46)          Discovered 2005-Nov-24 by NEAT at Palomar Reference: 20060711/Numbers.arc Last Updated: 2006-07-17 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Oct-28 04:20 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin