+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   90721 (1991 RC29) Classification: Main-belt Asteroid          SPK-ID: 2090721 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO250965 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.3402104 n/a   a 2.6251214 n/a AU q 1.7320278 n/a AU i 14.23689 n/a deg node 330.98563 n/a deg peri 23.42295 n/a deg M 35.19294 n/a deg tp 2456248.6287478 (2012-Nov-17.12874780) n/a JED period 1553.5403069 4.25 n/a n/a d yr n 0.23172878 n/a deg/d Q 3.5182150 n/a AU   Orbit Determination Parameters    # obs. used (total)      207      first obs. used      1987-??-??      last obs. used      2013-01-20      # oppositions      9      planetary ephem.      DE403      condition code      0      fit RMS      0.49      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.277  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 15.3 mag n/a MPC14728   90721 (1991 RC29)          Discovered 1991-Sep-13 by Holt, H. E. at Palomar (675) Reference: 20041028/Numbers.arc Last Updated: 2004-10-29 Alternate Designations  1991 RC29 = 2001 AH43  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-26 00:50 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin