+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   19502 (1998 KB51) Classification: Main-belt Asteroid          SPK-ID: 2019502 [ 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 34 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1086712705766351 5.1529e-08   a 2.516787055780597 7.6635e-09 au q 2.243284608658092 1.2977e-07 au i 8.492884368098771 3.489e-06 deg node 178.6796849951646 2.5753e-05 deg peri 62.36119543467597 2.9124e-05 deg M 186.0663787106075 1.3212e-05 deg tp 2459705.110600465948 (2022-May-05.61060047) 5.4063e-05 TDB period 1458.371384941727 3.99 6.661e-06 1.824e-08 d yr n .2468507018974353 1.1275e-09 deg/d Q 2.790289502903103 8.4963e-09 au   Orbit Determination Parameters    # obs. used (total)      2291      data-arc span      13770 days (37.70 yr)      first obs. used      1982-05-23      last obs. used      2020-02-03      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .47566      source      ORB      producer      Otto Matic      solution date      2020-Feb-22 22:49:30   Additional Information  Earth MOID = 1.2466 au   Jupiter MOID = 2.22829 au   T_jup = 3.435  [ 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 13.3   n/a MPO347675   diameter diameter 5.005 km 0.102 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.303   0.045 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   19502 (1998 KB51)          Discovered 1998-May-23 by LINEAR at Socorro Reference: 20001211/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1998 KB51 = 1982 KD3 = 1995 UG26  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Jul-05 05:24 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin