+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   146131 (2000 RK97) Classification: Main-belt Asteroid          SPK-ID: 2146131 [ 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 9 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .3316891262048691 5.5238e-08   a 3.064411825215432 2.1397e-08 au q 2.047979744577857 1.7478e-07 au i 13.51048292476046 6.8582e-06 deg node 284.2951210307428 2.8421e-05 deg peri 96.47410708734361 3.0599e-05 deg M 228.1304243544164 1.2204e-05 deg tp 2459718.230214244407 (2022-May-18.73021424) 7.1731e-05 TDB period 1959.382032307617 5.36 2.0522e-05 5.619e-08 d yr n .1837313979938962 1.9243e-09 deg/d Q 4.080843905853007 2.8494e-08 au   Orbit Determination Parameters    # obs. used (total)      403      data-arc span      6843 days (18.74 yr)      first obs. used      2000-08-05      last obs. used      2019-05-01      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .59011      source      ORB      producer      Otto Matic      solution date      2019-Jul-13 08:28:14   Additional Information  Earth MOID = 1.10291 au   Jupiter MOID = 1.811 au   T_jup = 3.106  [ 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 15.0   n/a MPO385650   diameter diameter 3.571 km 0.743 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)   geometric albedo albedo 0.071   0.043 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)   146131 (2000 RK97)          Discovered 2000-Sep-05 by LONEOS at Anderson Mesa Reference: 20070106/Numbers.arc Last Updated: 2007-01-09 [ show close-approach data ] Alternate Designations  2000 RK97 = 2002 CR48  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Aug-11 08:28 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin