+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   226805 (2004 RS216) Classification: Main-belt Asteroid          SPK-ID: 2226805 [ 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 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06254571033829763 5.228e-08   a 2.709133230197625 3.019e-08 au q 2.539688567913828 1.5306e-07 au i 24.58019526087136 7.9586e-06 deg node 217.8828725347109 1.225e-05 deg peri 67.90712152984706 7.4675e-05 deg M 260.8729332549784 7.848e-05 deg tp 2459448.970340523093 (2021-Aug-22.47034052) 0.00035979 TDB period 1628.710783943599 4.46 2.7225e-05 7.454e-08 d yr n .2210337179252486 3.6947e-09 deg/d Q 2.878577892481422 3.2078e-08 au   Orbit Determination Parameters    # obs. used (total)      459      data-arc span      6209 days (17.00 yr)      first obs. used      2003-04-28      last obs. used      2020-04-27      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .57308      source      ORB      producer      Otto Matic      solution date      2020-May-21 10:30:32   Additional Information  Earth MOID = 1.59365 au   Jupiter MOID = 2.20717 au   T_jup = 3.230  [ 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 15.1   n/a MPO352401   226805 (2004 RS216)          Discovered 2004-Sep-11 by LINEAR at Socorro Reference: 20091202/Numbers.arc Last Updated: 2009-12-04 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Aug-09 00:13 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin