+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   6387 (1989 WC) Classification: Main-belt Asteroid          SPK-ID: 2006387 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO231453 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1528142 n/a   a 2.6239089 n/a AU q 2.2229384 n/a AU i 1.61613 n/a deg node 280.28966 n/a deg peri 154.06943 n/a deg M 174.55307 n/a deg tp 2455647.7572919 (2011-Mar-27.25729190) n/a JED period 1552.4641012 4.25 n/a n/a d yr n 0.23188942 n/a deg/d Q 3.0248794 n/a AU   Orbit Determination Parameters    # obs. used (total)      1069      first obs. used      1978-??-??      last obs. used      2012-05-19      # oppositions      17      planetary ephem.      DE403      condition code      0      fit RMS      0.54      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.386  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 13.1 mag n/a PDS3 (MPC 25201)   6387 (1989 WC)          Discovered 1989-Nov-19 by Ueda, S., Kaneda, H. at Kushiro (399) Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  1989 WC = 1978 ED9  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-Jun-19 10:53 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin