+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   10224 Hisashi (1997 UK22) Classification: Main-belt Asteroid          SPK-ID: 2010224 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO253436 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1652043 n/a   a 2.4325117 n/a AU q 2.0306503 n/a AU i 3.42762 n/a deg node 126.47549 n/a deg peri 187.92764 n/a deg M 92.10510 n/a deg tp 2456045.9626310 (2012-Apr-28.46263100) n/a JED period 1385.7370855 3.79 n/a n/a d yr n 0.25978954 n/a deg/d Q 2.8343731 n/a AU   Orbit Determination Parameters    # obs. used (total)      790      first obs. used      1982-??-??      last obs. used      2013-02-05      # oppositions      16      planetary ephem.      DE403      condition code      0      fit RMS      0.57      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.485  [ 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 (MPC 33912)   10224 Hisashi           Discovered 1997 Oct. 26 by N. Sato at Chichibu. Hisashi Hirabayashi (b. 1943), senior chief officer of JAXA Space Education and director of the Space Education Center, led the Very Long Baseline Interferometer and Space Observatory Program with the radio satellite HALCA that successfully revealed active galactic nuclei. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20090409/MPCPages.arc Last Updated: 2009-04-10 Alternate Designations  1997 UK22 = 1982 XQ3 = 1993 SJ16  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-Jun-19 03:07 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin