+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   13505 (1989 AB3) Classification: Main-belt Asteroid          SPK-ID: 2013505 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO147072 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1012869 n/a   a 3.0131973 n/a AU q 2.7079999 n/a AU i 11.15506 n/a deg node 113.36852 n/a deg peri 304.32189 n/a deg M 282.77734 n/a deg tp 2456810.3095322 (2014-Jun-01.80953220) n/a JED period 1910.4681395 5.23 n/a n/a d yr n 0.18843549 n/a deg/d Q 3.3183947 n/a AU   Orbit Determination Parameters    # obs. used (total)      441      first obs. used      1955-??-??      last obs. used      2008-09-22      # oppositions      12      planetary ephem.      DE403      condition code      0      fit RMS      0.54      data source      MPC:mpn      producer      MPCW   Additional Information  T_jup = 3.212  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 12.5 mag n/a PDS3 (MPC 38317)   13505 (1989 AB3)          Discovered 1989-Jan-04 by McNaught, R. H. at Siding Spring (413) Reference: 20000222/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1989 AB3 = 1989 CD1 = 1994 AK  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-25 21:33 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin