+ 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 22 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2224791690250334 3.9741e-08   a 2.411128658231434 6.9247e-09 au q 1.874702757935661 9.4882e-08 au i 2.87387806738497 2.846e-06 deg node 70.3412854109701 9.4044e-05 deg peri 247.1935550184642 9.4448e-05 deg M 355.860387556396 8.2991e-06 deg tp 2459016.224838269050 (2020-Jun-15.72483827) 3.1521e-05 TDB period 1367.505256586184 3.74 5.8912e-06 1.613e-08 d yr n .2632531014167344 1.1341e-09 deg/d Q 2.947554558527206 8.4653e-09 au   Orbit Determination Parameters    # obs. used (total)      1225      data-arc span      11010 days (30.14 yr)      first obs. used      1990-09-14      last obs. used      2020-11-05      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49871      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 02:56:54   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 ] 2021-Jan-27 00:37 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin