+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   259486 (2003 SH220) Classification: Main-belt Asteroid          SPK-ID: 2259486 [ 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 .09919961547078157 5.4637e-08   a 2.258673733941007 9.3223e-09 au q 2.034614168060104 1.2433e-07 au i 2.378080132187947 6.7897e-06 deg node 12.07056470308429 9.4602e-05 deg peri 24.6670831310045 0.00010037 deg M 302.9518733890945 3.0923e-05 deg tp 2459196.979645389908 (2020-Dec-13.47964539) 0.00010644 TDB period 1239.87721494864 3.39 7.6761e-06 2.102e-08 d yr n .2903513312928429 1.7976e-09 deg/d Q 2.482733299821909 1.0247e-08 au   Orbit Determination Parameters    # obs. used (total)      286      data-arc span      6268 days (17.16 yr)      first obs. used      2003-09-17      last obs. used      2020-11-14      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .45651      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 05:50:29   Additional Information  Earth MOID = 1.04167 au   Jupiter MOID = 2.85441 au   T_jup = 3.614  [ 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 17.4   n/a MPO433690   259486 (2003 SH220)          Discovered 2003-Sep-27 by Yeung, W. K. Y. at Desert Eagle Reference: 20110119/Numbers.arc Last Updated: 2011-01-25 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-17 22:15 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin