+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   134484 (1998 WO15) Classification: Main-belt Asteroid          SPK-ID: 2134484 [ 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 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .181154595883284 5.5384e-08   a 2.671924522080685 1.8842e-08 au q 2.187893115052521 1.5002e-07 au i 13.26210506561841 5.186e-06 deg node 76.89066103475378 2.6331e-05 deg peri 262.7999410015908 2.9931e-05 deg M 31.42690817572805 1.4314e-05 deg tp 2458861.237604482070 (2020-Jan-12.73760448) 6.2921e-05 TDB period 1595.271864038325 4.37 1.6875e-05 4.62e-08 d yr n .2256668647616487 2.3871e-09 deg/d Q 3.155955929108848 2.2256e-08 au   Orbit Determination Parameters    # obs. used (total)      453      data-arc span      7985 days (21.86 yr)      first obs. used      1998-11-11      last obs. used      2020-09-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .59693      source      ORB      producer      Otto Matic      solution date      2020-Oct-22 20:36:53   Additional Information  Earth MOID = 1.22622 au   Jupiter MOID = 2.33943 au   T_jup = 3.319  [ 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 15.2   n/a MPO257621   134484 (1998 WO15)          Discovered 1998-Nov-21 by LINEAR at Socorro Reference: 20060907/Numbers.arc Last Updated: 2006-09-10 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Oct-25 12:12 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin