+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   5258 (1989 AU1) Classification: Jupiter Trojan          SPK-ID: 2005258 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: JPL 1 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07829619977783525 8.8459e-08   a 5.192355582733848 1.4552e-07 AU q 4.78581387271056 5.4442e-07 AU i 5.914197163528886 8.8816e-06 deg node 248.1705620632931 7.4603e-05 deg peri 230.9691023930556 0.00010014 deg M 4.667192079058234 6.0424e-05 deg tp 2456344.472887568013 (2013-Feb-20.97288757) 0.00072545 JED period 4321.604968010044 11.83 0.00018168 4.974e-07 d yr n .08330238480028591 3.502e-09 deg/d Q 5.598897292757136 1.5692e-07 AU   Orbit Determination Parameters    # obs. used (total)      903      data-arc span      8876 days (24.30 yr)      first obs. used      1989-01-01      last obs. used      2013-04-21      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .5588      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 13:16:00   Additional Information  Earth MOID = 3.80541 AU   T_jup = 2.983  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 10.0 mag n/a PDS3 (MPC 20492)   5258 (1989 AU1)          Discovered 1989-Jan-01 by Oshima, Y. at Gekko Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-21 23:33 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin