+ 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 2459000.5 (2020-May-31.0) TDB Reference: JPL 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2224791598001552 4.1546e-08   a 2.411128664784318 1.017e-08 au q 1.874702785273033 1.011e-07 au i 2.873882875207673 3.9947e-06 deg node 70.34132241444328 9.9368e-05 deg peri 247.1935221403687 9.9799e-05 deg M 355.8603792781528 1.2421e-05 deg tp 2459016.224869779102 (2020-Jun-15.72486978) 4.7235e-05 TDB period 1367.505262161024 3.74 8.6517e-06 2.369e-08 d yr n .2632531003435437 1.6655e-09 deg/d Q 2.947554544295603 1.2432e-08 au   Orbit Determination Parameters    # obs. used (total)      924      data-arc span      10916 days (29.89 yr)      first obs. used      1990-09-14      last obs. used      2020-08-03      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55619      source      ORB      producer      Otto Matic      solution date      2020-Aug-25 00:52:24   Additional Information  Earth MOID = .863654 au   Jupiter MOID = 2.36189 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 15.3   n/a MPO431668   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 ] 2020-Sep-27 16:40 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin