+ View the NASA Portal + Near-Earth Object (NEO) Project Search JPL JPL Small-Body Database Browser Search: [ help ]   65590 Archeptolemos (1305 T-3) Classification: Jupiter Trojan          SPK-ID: 2065590 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2455200.5 (2010-Jan-04.0) TDB Reference: MPO117881 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.0303054 n/a   a 5.2426938 n/a AU q 5.0838119 n/a AU i 8.02206 n/a deg node 275.59501 n/a deg peri 309.72073 n/a deg M 30.41822 n/a deg tp 2454830.0228384 (2008-Dec-29.52283841) n/a JED period 4384.6016687 12.00 n/a n/a d yr n 0.08210552 n/a deg/d Q 5.4015757 n/a AU   Orbit Determination Parameters    # obs. used (total)      221      first obs. used      1977-??-??      last obs. used      2007-03-19      # oppositions      9      planetary ephem.      DE403      quality code      0      fit RMS      0.57      data source      MPC:mpn      producer      MPC   Additional Information  T_jup = 2.979   MPC Jupiter Trojan  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 12.3 mag n/a MPO117881   65590 Archeptolemos           Discovered 1977 Oct. 17 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels. Archeptolemos, the charioteer of Hector, was killed by Teucer with the help of the god Apollo. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20031110/MPCPages.arc Last Updated: 2003-11-12 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2009-Nov-23 18:45 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin