+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   12633 (3119 T-1) Classification: Main-belt Asteroid          SPK-ID: 2012633 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO231502 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1080498 n/a   a 2.4004900 n/a AU q 2.1411175 n/a AU i 1.55666 n/a deg node 251.43970 n/a deg peri 262.81067 n/a deg M 138.28947 n/a deg tp 2455878.6629863 (2011-Nov-13.16298630) n/a JED period 1358.4644220 3.72 n/a n/a d yr n 0.26500510 n/a deg/d Q 2.6598625 n/a AU   Orbit Determination Parameters    # obs. used (total)      616      first obs. used      1971-??-??      last obs. used      2012-05-13      # oppositions      14      planetary ephem.      DE403      condition code      0      fit RMS      0.55      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.518  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 15.1 mag n/a PDS3 (MPC 36778)   12633 (3119 T-1)          Discovered 1971-Mar-26 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar (675) Reference: 19991123/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  3119 T-1 = 1995 WR22 = 1997 ED50  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-21 10:07 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin