+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   390980 (2005 SX7) Classification: Main-belt Asteroid          SPK-ID: 2390980 [ 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 16 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1454638378829737 7.1143e-08   a 2.981797096278679 2.6831e-08 au q 2.548053446865675 2.209e-07 au i 11.11303859568153 5.5902e-06 deg node 33.86691484474106 3.3591e-05 deg peri 309.3156975020226 3.9292e-05 deg M 318.0372317902379 1.9869e-05 deg tp 2459219.718492766254 (2021-Jan-05.21849277) 0.00010479 TDB period 1880.682823434228 5.15 2.5385e-05 6.95e-08 d yr n .1914198372602886 2.5837e-09 deg/d Q 3.415540745691683 3.0734e-08 au   Orbit Determination Parameters    # obs. used (total)      183      data-arc span      9065 days (24.82 yr)      first obs. used      1995-11-18      last obs. used      2020-09-12      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .59485      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 16:36:51   Additional Information  Earth MOID = 1.55878 au   Jupiter MOID = 2.08661 au   T_jup = 3.215  [ 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 15.9   n/a MPO440687   390980 (2005 SX7)          Discovered 2005-Sep-25 by CSS at Catalina Reference: Last Updated: 2014-04-17 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-20 20:36 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin