+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   26218 (1997 WJ13) Classification: Main-belt Asteroid          SPK-ID: 2026218 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO253538 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.0478963 n/a   a 2.9959728 n/a AU q 2.8524768 n/a AU i 8.00453 n/a deg node 262.66061 n/a deg peri 128.86014 n/a deg M 21.74027 n/a deg tp 2456286.1153756 (2012-Dec-24.61537560) n/a JED period 1894.1100910 5.19 n/a n/a d yr n 0.19006287 n/a deg/d Q 3.1394688 n/a AU   Orbit Determination Parameters    # obs. used (total)      618      first obs. used      1997-??-??      last obs. used      2013-02-06      # oppositions      13      planetary ephem.      DE403      condition code      0      fit RMS      0.55      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.238  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 13.2 mag n/a PDS3 (MPO 13924)   26218 (1997 WJ13)          Discovered 1997-Nov-24 by Shimizu, Y., Urata, T. at Nachi-Katsuura (905) Reference: 20010705/Numbers.arc Last Updated: 2004-04-19 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-Jun-19 08:52 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin