+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   212540 (2006 RR99) Classification: Main-belt Asteroid          SPK-ID: 2212540 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 13 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07968697804286728 6.9491e-08   a 2.76182503503865 2.3942e-08 au q 2.541743544113284 1.8351e-07 au i 3.343505842986469 7.8143e-06 deg node 15.4974636639294 7.4644e-05 deg peri 324.0340859483047 8.3688e-05 deg M 49.96889707902362 3.6241e-05 deg tp 2458967.803456172993 (2020-Apr-28.30345617) 0.00016846 TDB period 1676.457970349891 4.59 2.18e-05 5.969e-08 d yr n .2147384583252421 2.7923e-09 deg/d Q 2.981906525964016 2.585e-08 au   Orbit Determination Parameters    # obs. used (total)      255      data-arc span      7538 days (20.64 yr)      first obs. used      2000-05-01      last obs. used      2020-12-20      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52365      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 12:41:41   Additional Information  Earth MOID = 1.53206 au   Jupiter MOID = 2.32183 au   T_jup = 3.334  [ 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 16.4   n/a MPO437020   212540 (2006 RR99)          Discovered 2006-Sep-12 by CSS at Catalina Reference: 20090409/Numbers.arc Last Updated: 2009-04-10 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Mar-04 23:32 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin