+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   13969 (1991 RK26) Classification: Main-belt Asteroid          SPK-ID: 2013969 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO250350 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1949517 n/a   a 2.2720978 n/a AU q 1.8291485 n/a AU i 7.24845 n/a deg node 20.73752 n/a deg peri 297.50311 n/a deg M 144.71925 n/a deg tp 2455897.6218486 (2011-Dec-02.12184860) n/a JED period 1250.9471581 3.42 n/a n/a d yr n 0.28778194 n/a deg/d Q 2.7150471 n/a AU   Orbit Determination Parameters    # obs. used (total)      455      first obs. used      1991-??-??      last obs. used      2013-01-10      # oppositions      14      planetary ephem.      DE403      condition code      0      fit RMS      0.56      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.576  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.5 mag n/a PDS3 (MPC 39042)   13969 (1991 RK26)          Discovered 1991-Sep-11 by Holt, H. E. at Palomar (675) Reference: 20000320/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1991 RK26 = 1997 GU18  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-18 23:00 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin