+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2005 MW9) Classification: Apollo [NEO]          SPK-ID: 3283245 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 9 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .8874998357492235 0.00015215   a 3.57239117324378 0.0051406 au q .4018945937579493 3.5248e-05 au i 55.22741557383848 0.023855 deg node 291.5975866916385 0.0033509 deg peri 241.5095779402058 0.0061607 deg M 85.51195623482765 1.695 deg tp 2458414.683932238087 (2018-Oct-23.18393224) 10.347 TDB period 2466.249091707658 6.75 5.3233 0.01457 d yr n .145970656901786 0.00031507 deg/d Q 6.742887752729612 0.0097029 au   Orbit Determination Parameters    # obs. used (total)      57      data-arc span      19 days      first obs. used      2005-06-18      last obs. used      2005-07-07      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      7      norm. resid. RMS      .52354      source      ORB      producer      Otto Matic      solution date      2017-Apr-06 09:10:49   Additional Information  Earth MOID = .147112 au   Jupiter MOID = 2.55309 au   T_jup = 1.892  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 19.2   n/a MPO87686   [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ] 2021-Jan-19 07:14 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin