+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (1998 KO3) Classification: Apollo [NEO]          SPK-ID: 3092184 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2450960.5 (1998-May-27.0) TDB Reference: JPL 11 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .77562632969559 0.0090813   a 2.660702231294037 0.12028 au q .5969915252225764 0.0028253 au i 54.80881592437147 0.56712 deg node 65.2094489126908 0.0054602 deg peri 75.60300399027068 0.64199 deg M 15.4877169506025 1.124 deg tp 2450892.301041902015 (1998-Mar-19.80104190) 0.32511 TDB period 1585.232025713093 4.34 107.49 0.2943 d yr n .2270960932914912 0.015399 deg/d Q 4.724412937365497 0.21357 au   Orbit Determination Parameters    # obs. used (total)      60      data-arc span      6 days      first obs. used      1998-05-24      last obs. used      1998-05-30      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      9      norm. resid. RMS      .54383      source      ORB      producer      Otto Matic      solution date      2017-Apr-06 09:17:47   Additional Information  Earth MOID = .080075 au   Jupiter MOID = 3.19304 au   T_jup = 2.476  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 19.5   n/a MPO242996   [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2020-Aug-11 20:14 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin