+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   390733 (2003 OS) Classification: Mars-crossing Asteroid          SPK-ID: 2390733 [ 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 .2034031638208721 7.02e-08   a 2.011334210973339 1.3854e-08 au q 1.602222468960204 1.4681e-07 au i 35.2878587308149 5.8578e-06 deg node 144.2432638812041 1.9629e-05 deg peri 183.6039501348131 4.6445e-05 deg M 289.3861093729736 4.559e-05 deg tp 2459204.867780131084 (2020-Dec-21.36778013) 0.000133 TDB period 1041.897000631084 2.85 1.0765e-05 2.947e-08 d yr n .3455235976127635 3.5699e-09 deg/d Q 2.420445952986474 1.6672e-08 au   Orbit Determination Parameters    # obs. used (total)      225      data-arc span      6257 days (17.13 yr)      first obs. used      2003-06-25      last obs. used      2020-08-11      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .5596      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 16:38:48   Additional Information  Earth MOID = .59081 au   Jupiter MOID = 2.9439 au   T_jup = 3.581  [ 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 MPO413427   390733 (2003 OS)          Discovered 2003-Jul-20 by LINEAR at Socorro Reference: Last Updated: 2014-04-17 Alternate Designations  2003 OS = 2006 QQ186  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-20 20:56 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin