+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   4641 Ayako (1990 QT3) Classification: Main-belt Asteroid          SPK-ID: 2004641 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO240232 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1709821 n/a   a 2.1887407 n/a AU q 1.8145052 n/a AU i 1.65236 n/a deg node 101.96799 n/a deg peri 284.01788 n/a deg M 324.68442 n/a deg tp 2456516.5255818 (2013-Aug-12.02558180) n/a JED period 1182.7417090 3.24 n/a n/a d yr n 0.30437753 n/a deg/d Q 2.5629762 n/a AU   Orbit Determination Parameters    # obs. used (total)      1059      first obs. used      1961-??-??      last obs. used      2012-09-08      # oppositions      19      planetary ephem.      DE403      condition code      0      fit RMS      0.58      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.655  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 13.7 mag n/a PDS3 (MPC 17273)   4641 Ayako           Discovered 1990 Aug. 30 by K. Endate and K. Watanabe at Kitami. Ayako Endate (b.~1971) is the wife of the first discoverer of this minor planet. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20110218/MPCPages.arc Last Updated: 2011-02-22 Alternate Designations  1990 QT3 = 1935 SH1 = 1961 UK = 1976 GZ1 = 1977 RX1 = 1984 YO5 = 1984 YR6 = 1987 UU9  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-22 20:36 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin