+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   7339 (1991 RA16) Classification: Main-belt Asteroid          SPK-ID: 2007339 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO216494 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1341966 n/a   a 2.6843722 n/a AU q 2.3241386 n/a AU i 4.64204 n/a deg node 117.07190 n/a deg peri 346.64101 n/a deg M 233.70017 n/a deg tp 2456964.0893649 (2014-Nov-02.58936490) n/a JED period 1606.4326561 4.40 n/a n/a d yr n 0.22409903 n/a deg/d Q 3.0446058 n/a AU   Orbit Determination Parameters    # obs. used (total)      808      first obs. used      1984-??-??      last obs. used      2011-06-08      # oppositions      17      planetary ephem.      DE403      condition code      0      fit RMS      0.58      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.357  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 13.2 mag n/a PDS3 (MPC 28572)   7339 (1991 RA16)          Discovered 1991-Sep-15 by Holt, H. E. at Palomar (675) Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  1991 RA16 = 1984 AM = 1987 SD11 = 1989 CN6  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-Jun-19 03:55 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin