+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   16652 (1993 TT12) Classification: Main-belt Asteroid          SPK-ID: 2016652 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO256985 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1777400 n/a   a 2.3447053 n/a AU q 1.9279574 n/a AU i 4.19646 n/a deg node 67.76929 n/a deg peri 240.31039 n/a deg M 208.69370 n/a deg tp 2456951.6696951 (2014-Oct-21.16969510) n/a JED period 1311.3868375 3.59 n/a n/a d yr n 0.27451854 n/a deg/d Q 2.7614532 n/a AU   Orbit Determination Parameters    # obs. used (total)      822      first obs. used      1975-??-??      last obs. used      2013-03-03      # oppositions      14      planetary ephem.      DE403      condition code      0      fit RMS      0.54      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.537  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 15.0 mag n/a PDS3 (MPO 2896)   16652 (1993 TT12)          Discovered 1993-Oct-13 by Holt, H. E. at Palomar (675) Reference: 20000913/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1993 TT12 = 1975 TS6 = 1986 WJ4 = 1993 TZ23 = 1997 WO45  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-Jun-19 17:45 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin