+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   14526 Xenocrates (1997 JT3) Classification: Main-belt Asteroid          SPK-ID: 2014526 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 24 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2222493470043558 3.9341e-08   a 2.410454029251689 6.8493e-09 au q 1.874732195266483 9.3892e-08 au i 2.87385154942201 2.8213e-06 deg node 70.33713877244421 9.2337e-05 deg peri 247.18787865 9.2737e-05 deg M 48.53961415614425 8.2746e-06 deg tp 2459016.193553505893 (2020-Jun-15.69355351) 3.1459e-05 TDB period 1366.931358878132 3.74 5.8262e-06 1.595e-08 d yr n .2633636266092098 1.1225e-09 deg/d Q 2.946175863236895 8.3716e-09 au   Orbit Determination Parameters    # obs. used (total)      1276      data-arc span      11109 days (30.41 yr)      first obs. used      1990-09-14      last obs. used      2021-02-12      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .49785      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 00:31:42   Additional Information  Earth MOID = .861706 au   Jupiter MOID = 2.36297 au   T_jup = 3.484  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 15.43   n/a MPCxxxxx   14526 Xenocrates           Discovered 1997 May 6 by P. G. Comba at Prescott. Xenocrates of Chalcedon (396-314 B.C.), philosopher and mathematician, was a student of Plato and teacher of Epicurus. As head of the Academy (339-314 B.C.) he upheld Plato's policy that geometry and music are prerequisites to the study of philosophy. He wrote on the history of geometry and on number theory. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20000726/MPCPages.arc Last Updated: 2013-03-29 Alternate Designations  1997 JT3 = 1990 RG8  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jun-23 01:44 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin