+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   6988 (1994 WE3) Classification: Main-belt Asteroid          SPK-ID: 2006988 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO250278 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.0335360 n/a   a 2.4751461 n/a AU q 2.3921396 n/a AU i 3.20335 n/a deg node 220.14459 n/a deg peri 334.37173 n/a deg M 132.67975 n/a deg tp 2455876.2941942 (2011-Nov-10.79419420) n/a JED period 1422.3277484 3.89 n/a n/a d yr n 0.25310622 n/a deg/d Q 2.5581526 n/a AU   Orbit Determination Parameters    # obs. used (total)      949      first obs. used      1978-??-??      last obs. used      2012-09-06      # oppositions      17      planetary ephem.      DE403      condition code      0      fit RMS      0.55      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.479  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 13.3 mag n/a PDS3 (MPC 28116)   6988 (1994 WE3)          Discovered 1994-Nov-28 by Ueda, S., Kaneda, H. at Kushiro (399) Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  1994 WE3 = 1978 UK4 = 1988 JN1 = 1989 PT1  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-25 21:40 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin