+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   6443 (1988 RH12) Classification: Jupiter Trojan          SPK-ID: 2006443 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO250271 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1270514 n/a   a 5.2440322 n/a AU q 4.5777706 n/a AU i 9.49761 n/a deg node 168.16335 n/a deg peri 199.65102 n/a deg M 6.27481 n/a deg tp 2456324.0470049 (2013-Jan-31.54700490) n/a JED period 4386.2807373 12.01 n/a n/a d yr n 0.08207409 n/a deg/d Q 5.9102938 n/a AU   Orbit Determination Parameters    # obs. used (total)      382      first obs. used      1988-??-??      last obs. used      2013-01-07      # oppositions      17      planetary ephem.      DE403      condition code      0      fit RMS      0.52      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 2.956   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 PDS3 (MPC 25320)   6443 (1988 RH12)          Discovered 1988-Sep-14 by Bus, S. J. at Cerro Tololo Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-19 10:54 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin