+ 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 14 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .3083795811397324 4.5177e-08   a 2.580409151901371 1.8789e-08 au q 1.784663658468895 1.215e-07 au i 5.943572676534601 4.1612e-06 deg node 152.9614331036382 5.3306e-05 deg peri 207.8462494082824 5.5608e-05 deg M 357.42277589029 2.4594e-05 deg tp 2459011.338794240334 (2020-Jun-10.83879424) 0.00010354 TDB period 1514.018866973597 4.15 1.6537e-05 4.528e-08 d yr n .237777750233464 2.5971e-09 deg/d Q 3.376154645333848 2.4584e-08 au   Orbit Determination Parameters    # obs. used (total)      384      data-arc span      10648 days (29.15 yr)      first obs. used      1990-05-30      last obs. used      2019-07-25      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .59974      source      ORB      producer      Otto Matic      solution date      2020-Feb-23 16:05:47   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 ] 2020-Sep-26 22:55 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin