+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   22323 (1991 RC6) Classification: Main-belt Asteroid          SPK-ID: 2022323 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO250431 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1947258 n/a   a 2.5559735 n/a AU q 2.0582595 n/a AU i 13.63232 n/a deg node 20.65009 n/a deg peri 339.36193 n/a deg M 103.42189 n/a deg tp 2455971.7117173 (2012-Feb-14.21171730) n/a JED period 1492.5639222 4.09 n/a n/a d yr n 0.24119570 n/a deg/d Q 3.0536875 n/a AU   Orbit Determination Parameters    # obs. used (total)      418      first obs. used      1991-??-??      last obs. used      2013-01-20      # oppositions      14      planetary ephem.      DE403      condition code      0      fit RMS      0.54      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.372  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.1 mag n/a PDS3 (MPO 9962)   22323 (1991 RC6)          Discovered 1991-Sep-13 by Holt, H. E. at Palomar (675) Reference: 20010309/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1991 RC6 = 1998 HP72  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-25 07:36 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin