+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   9239 van Riebeeck (1997 JP15) Classification: Main-belt Asteroid          SPK-ID: 2009239 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO240278 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.2111467 n/a   a 2.3239180 n/a AU q 1.8332304 n/a AU i 1.95107 n/a deg node 160.16138 n/a deg peri 278.27616 n/a deg M 319.73270 n/a deg tp 2456545.2370171 (2013-Sep-09.73701710) n/a JED period 1293.9860918 3.54 n/a n/a d yr n 0.27821010 n/a deg/d Q 2.8146056 n/a AU   Orbit Determination Parameters    # obs. used (total)      881      first obs. used      1982-??-??      last obs. used      2012-10-10      # oppositions      13      planetary ephem.      DE403      condition code      0      fit RMS      0.55      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.545  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.7 mag n/a PDS3 (MPC 32432)   9239 van Riebeeck           Discovered 1997 May 3 by E. W. Elst at the European Southern Observatory. Jan Anthoniszoon van Riebeeck (1619-1677), formerly an assistant surgeon, was sent by the Dutch authorities to southern Africa in 1652 to establish at Table Bay a fort and provisioning station for ships traveling to the East Indies. The station grew to become Cape Town. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20021120/MPCPages.arc Last Updated: 2003-10-02 Alternate Designations  1997 JP15 = 1982 BM9 = 1991 RR34 = 1993 FN59  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-Jun-18 22:11 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin