+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   70206 (1999 RT31) Classification: Main-belt Asteroid          SPK-ID: 2070206 [ 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 21 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1863396623842043 3.7499e-08   a 2.442467948072524 9.3005e-09 au q 1.98733929524445 9.3034e-08 au i .3141433730459832 3.8272e-06 deg node 262.6222265061633 0.00072349 deg peri 28.62510450875669 0.00072356 deg M 250.3805744191021 9.5697e-06 deg tp 2459625.047959635666 (2022-Feb-14.54795964) 3.7824e-05 TDB period 1394.253478878593 3.82 7.9636e-06 2.18e-08 d yr n .2582026908690593 1.4748e-09 deg/d Q 2.897596600900598 1.1034e-08 au   Orbit Determination Parameters    # obs. used (total)      853      data-arc span      7863 days (21.53 yr)      first obs. used      1999-09-04      last obs. used      2021-03-15      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .54716      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 12:48:07   Additional Information  Earth MOID = .969156 au   Jupiter MOID = 2.28253 au   T_jup = 3.477  [ 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 MPO453105   70206 (1999 RT31)          Discovered 1999-Sep-05 by Bickel, W. at Bergisch Gladbach Reference: 20031109/Numbers.arc Last Updated: 2004-04-19 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-20 02:45 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin