+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   101146 (1998 RK70) Classification: Main-belt Asteroid          SPK-ID: 2101146 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 22 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2707312732391976 3.7091e-08   a 3.077473679026846 1.6517e-08 au q 2.244305311543791 1.167e-07 au i 5.041012714078055 4.4326e-06 deg node 78.40985825052286 5.9458e-05 deg peri 340.9028951878471 6.0264e-05 deg M 323.866582693779 8.6672e-06 deg tp 2459198.423099598886 (2020-Dec-14.92309960) 4.768e-05 TDB period 1971.922977883728 5.40 1.5875e-05 4.346e-08 d yr n .1825629114512134 1.4698e-09 deg/d Q 3.910642046509902 2.0989e-08 au   Orbit Determination Parameters    # obs. used (total)      589      data-arc span      9813 days (26.87 yr)      first obs. used      1993-12-17      last obs. used      2020-10-29      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53477      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 20:02:09   Additional Information  Earth MOID = 1.25766 au   Jupiter MOID = 1.44953 au   T_jup = 3.166  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 15.3   n/a MPO453465   diameter diameter 2.159 km 0.524 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.346   0.121 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   101146 (1998 RK70)          Discovered 1998-Sep-14 by LINEAR at Socorro Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  1998 RK70 = 2000 DW83  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Nov-26 20:50 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin