+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   7642 (1988 TZ) Classification: Main-belt Asteroid          SPK-ID: 2007642 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO256920 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1318005 n/a   a 2.2785808 n/a AU q 1.9782627 n/a AU i 3.82790 n/a deg node 17.92684 n/a deg peri 52.25678 n/a deg M 8.24136 n/a deg tp 2456371.7398286 (2013-Mar-20.23982860) n/a JED period 1256.3049934 3.44 n/a n/a d yr n 0.28655462 n/a deg/d Q 2.5788989 n/a AU   Orbit Determination Parameters    # obs. used (total)      817      first obs. used      1964-??-??      last obs. used      2013-03-01      # oppositions      15      planetary ephem.      DE403      condition code      0      fit RMS      0.54      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.593  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.2 mag n/a PDS3 (MPC 29897)   7642 (1988 TZ)          Discovered 1988-Oct-13 by Ueda, S., Kaneda, H. at Kushiro (399) Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  1988 TZ = 1964 WL = 1995 UN3  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-19 15:19 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin