+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   70198 (1999 RV21) Classification: Main-belt Asteroid          SPK-ID: 2070198 [ 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 17 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .3083795668387688 3.8164e-08   a 2.58040916093449 1.1564e-08 au q 1.784663701618721 9.7443e-08 au i 5.943570898655002 3.9619e-06 deg node 152.9614434930172 5.2893e-05 deg peri 207.8462464933941 5.3813e-05 deg M 357.4227634408327 1.3753e-05 deg tp 2459011.338846654785 (2020-Jun-10.83884665) 5.7894e-05 TDB period 1514.01887492368 4.15 1.0178e-05 2.787e-08 d yr n .2377777489848977 1.5984e-09 deg/d Q 3.376154620250258 1.5131e-08 au   Orbit Determination Parameters    # obs. used (total)      478      data-arc span      11128 days (30.47 yr)      first obs. used      1990-05-30      last obs. used      2020-11-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .56505      source      ORB      producer      Otto Matic      solution date      2020-Dec-17 21:54:25   Additional Information  Earth MOID = .783841 au   Jupiter MOID = 2.08093 au   T_jup = 3.349  [ 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 MPO436273   70198 (1999 RV21)          Discovered 1999-Sep-07 by LINEAR at Socorro Reference: 20031109/Numbers.arc Last Updated: 2004-04-19 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-19 00:46 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin