+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   437396 (2013 WL63) Classification: Main-belt Asteroid          SPK-ID: 2437396 [ 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 15 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1738105341543014 6.3665e-08   a 2.364073007046705 2.5875e-08 au q 1.953172214912152 1.5833e-07 au i 21.98307727255357 1.2005e-05 deg node 68.921297529 1.8524e-05 deg peri 84.86233267892581 5.0761e-05 deg M 199.9419278990841 4.3336e-05 deg tp 2459590.789195381342 (2022-Jan-11.28919538) 0.00016443 TDB period 1327.668811375538 3.63 2.1797e-05 5.968e-08 d yr n .2711519596720964 4.4517e-09 deg/d Q 2.774973799181258 3.0373e-08 au   Orbit Determination Parameters    # obs. used (total)      104      data-arc span      5025 days (13.76 yr)      first obs. used      2004-04-12      last obs. used      2018-01-14      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .67436      source      ORB      producer      Otto Matic      solution date      2019-Jul-14 15:49:29   Additional Information  Earth MOID = 1.09582 au   Jupiter MOID = 2.53409 au   T_jup = 3.432  [ 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 17.0   n/a MPO434609   437396 (2013 WL63)          Discovered 2004-Apr-12 by CSS at Catalina Reference: Last Updated: 2015-06-04 Alternate Designations  2013 WL63 = 2004 GZ74  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Jul-05 11:11 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin