+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   200183 (1999 RO) Classification: Main-belt Asteroid          SPK-ID: 2200183 [ 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 .2225549367716025 5.8901e-08   a 2.654924363183633 2.5324e-08 au q 2.064057839401912 1.5995e-07 au i 16.20434260174715 6.6957e-06 deg node 157.8547729740253 1.8041e-05 deg peri 235.0837880363958 2.3032e-05 deg M 254.2354795418206 2.1007e-05 deg tp 2459464.709645394124 (2021-Sep-07.20964539) 9.7322e-05 TDB period 1580.071196067722 4.33 2.2607e-05 6.189e-08 d yr n .2278378347101837 3.2599e-09 deg/d Q 3.245790886965353 3.096e-08 au   Orbit Determination Parameters    # obs. used (total)      301      data-arc span      7674 days (21.01 yr)      first obs. used      1999-08-12      last obs. used      2020-08-15      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .58971      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 05:12:52   Additional Information  Earth MOID = 1.10964 au   Jupiter MOID = 2.34298 au   T_jup = 3.297  [ 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 15.8   n/a MPO436976   200183 (1999 RO)          Discovered 1999-Sep-03 by Sarounova, L. at Ondrejov Reference: 20081212/Numbers.arc Last Updated: 2008-12-12 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-27 11:28 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin