+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 25 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2708792151159742 3.6991e-08   a 3.078002650655028 1.4994e-08 au q 2.244235708520706 1.1652e-07 au i 5.040906665863951 4.295e-06 deg node 78.41091376532832 4.8554e-05 deg peri 340.9091581735322 4.9522e-05 deg M .3765806909209847 7.2441e-06 deg tp 2459198.436723374048 (2020-Dec-14.93672337) 3.9692e-05 TDB period 1972.4314157643 5.40 1.4412e-05 3.946e-08 d yr n .1825158518175919 1.3336e-09 deg/d Q 3.911769592789351 1.9055e-08 au   Orbit Determination Parameters    # obs. used (total)      701      data-arc span      9917 days (27.15 yr)      first obs. used      1993-12-17      last obs. used      2021-02-10      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .51413      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 15:35:25   Additional Information  Earth MOID = 1.25692 au   Jupiter MOID = 1.44925 au   T_jup = 3.165  [ 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 15.54   n/a E2021B55   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 ] 2021-Apr-18 04:55 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin