+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   15247 (1989 WS) Classification: Main-belt Asteroid          SPK-ID: 2015247 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO250362 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1907491 n/a   a 2.5703789 n/a AU q 2.0800814 n/a AU i 8.73605 n/a deg node 237.38953 n/a deg peri 159.05791 n/a deg M 253.62614 n/a deg tp 2456845.2608616 (2014-Jul-06.76086160) n/a JED period 1505.1997753 4.12 n/a n/a d yr n 0.23917091 n/a deg/d Q 3.0606764 n/a AU   Orbit Determination Parameters    # obs. used (total)      715      first obs. used      1960-??-??      last obs. used      2012-07-30      # oppositions      15      planetary ephem.      DE403      condition code      0      fit RMS      0.54      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.388  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 13.4 mag n/a PDS3 (MPO 837)   15247 (1989 WS)          Discovered 1989-Nov-20 by Ueda, S., Kaneda, H. at Kushiro (399) Reference: 20000621/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1989 WS = 1993 TZ12  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-24 22:15 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin