+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   16471 (1990 OR3) Classification: Main-belt Asteroid          SPK-ID: 2016471 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO247507 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.0953358 n/a   a 2.3877057 n/a AU q 2.1600719 n/a AU i 5.62517 n/a deg node 324.87545 n/a deg peri 336.05031 n/a deg M 68.61538 n/a deg tp 2456143.6446697 (2012-Aug-04.14466970) n/a JED period 1347.6267114 3.69 n/a n/a d yr n 0.26713629 n/a deg/d Q 2.6153395 n/a AU   Orbit Determination Parameters    # obs. used (total)      916      first obs. used      1950-??-??      last obs. used      2012-12-08      # oppositions      15      planetary ephem.      DE403      condition code      0      fit RMS      0.51      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.521  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 13.6 mag n/a PDS3 (MPO 2843)   16471 (1990 OR3)          Discovered 1990-Jul-27 by Holt, H. E. at Palomar (675) Reference: 20000913/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1990 OR3 = 1990 PE = 1999 XG229  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-Jun-19 12:47 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin