+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 23 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1812200358643333 4.6931e-08   a 2.672514453239705 1.5468e-08 au q 2.188201288175657 1.2198e-07 au i 13.26124636055776 5.1629e-06 deg node 76.89222826782 1.9415e-05 deg peri 262.8599280166874 2.41e-05 deg M 76.49372012549138 1.4391e-05 deg tp 2458861.420290419897 (2020-Jan-12.92029042) 6.2692e-05 TDB period 1595.800220574679 4.37 1.3855e-05 3.793e-08 d yr n .2255921482893121 1.9586e-09 deg/d Q 3.156827618303753 1.8272e-08 au   Orbit Determination Parameters    # obs. used (total)      612      data-arc span      8127 days (22.25 yr)      first obs. used      1998-11-11      last obs. used      2021-02-10      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .55245      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 18:08:35   Additional Information  Earth MOID = 1.22481 au   Jupiter MOID = 2.33892 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 ] 2021-Apr-19 13:33 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin