+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   11291 (1991 RZ10) Classification: Main-belt Asteroid          SPK-ID: 2011291 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO229134 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.2516807 n/a   a 3.1895704 n/a AU q 2.3868171 n/a AU i 2.48793 n/a deg node 82.15706 n/a deg peri 241.50125 n/a deg M 318.32293 n/a deg tp 2456641.3748232 (2013-Dec-14.87482320) n/a JED period 2080.6389781 5.70 n/a n/a d yr n 0.17302377 n/a deg/d Q 3.9923237 n/a AU   Orbit Determination Parameters    # obs. used (total)      552      first obs. used      1991-??-??      last obs. used      2012-04-29      # oppositions      15      planetary ephem.      DE403      condition code      0      fit RMS      0.56      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.145  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.0 mag n/a PDS3 (MPC 35563)   11291 (1991 RZ10)          Discovered 1991-Sep-10 by Holt, H. E. at Palomar (675) Reference: 19990831/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1991 RZ10 = 1997 WJ54  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-Jun-19 12:13 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin