+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   259504 (2003 SD290) Classification: Main-belt Asteroid          SPK-ID: 2259504 [ 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 .1762814417752682 3.7574e-08   a 2.233142119659355 1.2394e-08 au q 1.839480607116725 8.7524e-08 au i 6.680190936214576 4.9351e-06 deg node 84.51869666737711 5.0779e-05 deg peri 213.9871950193605 5.4865e-05 deg M 49.76021498936539 2.3311e-05 deg tp 2458832.018306741743 (2019-Dec-14.51830674) 7.8701e-05 TDB period 1218.913736323994 3.34 1.0147e-05 2.778e-08 d yr n .2953449364560365 2.4587e-09 deg/d Q 2.626803632201985 1.4578e-08 au   Orbit Determination Parameters    # obs. used (total)      278      data-arc span      7273 days (19.91 yr)      first obs. used      2000-12-16      last obs. used      2020-11-14      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .61366      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 00:16:48   Additional Information  Earth MOID = .827939 au   Jupiter MOID = 2.57531 au   T_jup = 3.611  [ 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 17.2   n/a MPO433690   259504 (2003 SD290)          Discovered 2003-Sep-28 by LONEOS at Anderson Mesa Reference: 20110119/Numbers.arc Last Updated: 2011-01-25 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-22 23:37 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin