+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   102031 (1999 RC105) Classification: Main-belt Asteroid          SPK-ID: 2102031 [ 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 24 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .186240305016864 3.7635e-08   a 2.249778390936416 7.2011e-09 au q 1.830778977188068 8.7067e-08 au i 6.758378234432493 4.0853e-06 deg node 140.2120928588092 2.9961e-05 deg peri 226.243338303068 3.1628e-05 deg M 107.0022461897044 1.0173e-05 deg tp 2458834.148113539613 (2019-Dec-16.64811354) 3.4385e-05 TDB period 1232.559911797713 3.37 5.9178e-06 1.62e-08 d yr n .2920750517311024 1.4023e-09 deg/d Q 2.668777804684764 8.5422e-09 au   Orbit Determination Parameters    # obs. used (total)      822      data-arc span      7804 days (21.37 yr)      first obs. used      1999-09-08      last obs. used      2021-01-19      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49633      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 08:30:23   Additional Information  Earth MOID = .834333 au   Jupiter MOID = 2.79813 au   T_jup = 3.596  [ 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 MPO436477   102031 (1999 RC105)          Discovered 1999-Sep-08 by LINEAR at Socorro Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Mar-04 22:53 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin