+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   11944 Shaftesbury (1993 OK9) Classification: Main-belt Asteroid          SPK-ID: 2011944 [ 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 40 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .01864148065387302 3.1594e-08   a 2.887240729036381 1.3551e-08 au q 2.833418286842975 8.9916e-08 au i 2.97749959579661 3.4752e-06 deg node 128.9399633401769 6.7185e-05 deg peri 135.4705221248568 0.00011723 deg M 201.7646259769857 9.6856e-05 deg tp 2459788.133169569104 (2022-Jul-27.63316957) 0.00048242 TDB period 1791.93775598898 4.91 1.2615e-05 3.454e-08 d yr n .2008998352743084 1.4143e-09 deg/d Q 2.941063171229787 1.3803e-08 au   Orbit Determination Parameters    # obs. used (total)      2468      data-arc span      24210 days (66.28 yr)      first obs. used      1954-08-04      last obs. used      2020-11-15      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .47544      source      ORB      producer      Otto Matic      solution date      2020-Dec-17 20:17:34   Additional Information  Earth MOID = 1.81837 au   Jupiter MOID = 2.04868 au   T_jup = 3.290  [ 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 MPO358746   diameter diameter 6.906 km 0.162 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.213   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   11944 Shaftesbury           Discovered 1993 July 20 by E. W. Elst at the European Southern Observatory. Anthony Ashley Cooper Shaftesbury (1671-1713) was an English politician and philosopher. Educated by philosopher John Locke, he soon developed his own school of thought. His philosophy was also influenced by the "Cambridge Platonists", who stressed the existence of a natural moral sense. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20000523/MPCPages.arc Last Updated: 2013-03-29 [ hide close-approach data ] Close-Approach Data   ...sorted by Date/Time (TDB) Date/Time (TDB) Time Uncertainty (days_HH:MM) Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified 1978-Oct-05 13:59 < 00:01 Hygie 0.0497318176387923 0.0497311204005684 0.0497325149596352 2.51260217864086 2.51260186943737 2443787.082945697 0.784355763648 260.360168982473 31.8790974179398 87.0399082733485 232020.365007586 T 40 CATAB v2.0f-lin.ifort 2020-Dec-17 20:17:41 2020-Dec-17 20:17 Alternate Designations  1993 OK9 = 1989 TZ2 = 1993 ON13  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-25 23:55 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin