+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   102095 (1999 RK156) Classification: Main-belt Asteroid          SPK-ID: 2102095 [ 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 28 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1873153069555244 3.0679e-08   a 2.451290128142438 9.2277e-09 au q 1.992125965352391 7.2745e-08 au i 2.34207984413768 4.1758e-06 deg node 273.4310072476792 8.43e-05 deg peri 141.1977991884365 8.5401e-05 deg M 92.49400576683783 1.4423e-05 deg tp 2458640.334931921161 (2019-Jun-05.83493192) 5.4947e-05 TDB period 1401.814349302074 3.84 7.9156e-06 2.167e-08 d yr n .2568100406300123 1.4501e-09 deg/d Q 2.910454290932486 1.0956e-08 au   Orbit Determination Parameters    # obs. used (total)      1270      data-arc span      7565 days (20.71 yr)      first obs. used      1999-08-08      last obs. used      2020-04-24      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49548      source      ORB      producer      Otto Matic      solution date      2020-May-20 18:05:28   Additional Information  Earth MOID = 1.00433 au   Jupiter MOID = 2.44493 au   T_jup = 3.470  [ 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 15.18   n/a E2021B55   102095 (1999 RK156)          Discovered 1999-Sep-09 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-01 11:13 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin