+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   14415 (1991 RQ7) Classification: Main-belt Asteroid          SPK-ID: 2014415 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO256970 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.2756712 n/a   a 2.9937562 n/a AU q 2.1684638 n/a AU i 9.66433 n/a deg node 305.40667 n/a deg peri 7.66144 n/a deg M 91.34935 n/a deg tp 2455920.4062678 (2011-Dec-24.90626780) n/a JED period 1892.0084663 5.18 n/a n/a d yr n 0.19027399 n/a deg/d Q 3.8190486 n/a AU   Orbit Determination Parameters    # obs. used (total)      576      first obs. used      1986-??-??      last obs. used      2013-03-07      # oppositions      15      planetary ephem.      DE403      condition code      0      fit RMS      0.58      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.176  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 12.9 mag n/a PDS3 (MPC 39823)   14415 (1991 RQ7)          Discovered 1991-Sep-13 by Ueda, S., Kaneda, H. at Kushiro (399) Reference: 20000418/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1991 RQ7 = 1986 TN9  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-27 02:55 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin