+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   23522 (1992 WC9) Classification: Main-belt Asteroid          SPK-ID: 2023522 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO250441 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.0886608 n/a   a 2.3381056 n/a AU q 2.1308073 n/a AU i 7.25287 n/a deg node 56.29898 n/a deg peri 32.85391 n/a deg M 227.92790 n/a deg tp 2456879.5746516 (2014-Aug-10.07465160) n/a JED period 1305.8539583 3.58 n/a n/a d yr n 0.27568167 n/a deg/d Q 2.5454039 n/a AU   Orbit Determination Parameters    # obs. used (total)      690      first obs. used      1992-??-??      last obs. used      2012-07-24      # oppositions      12      planetary ephem.      DE403      condition code      0      fit RMS      0.52      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.550  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.4 mag n/a PDS3 (MPO 11112)   23522 (1992 WC9)          Discovered 1992-Nov-18 by Ueda, S., Kaneda, H. at Kushiro (399) Reference: 20010408/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1992 WC9 = 1997 BK7  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-19 03:22 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin