+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   4288 Tokyotech (1989 TQ1) Classification: Main-belt Asteroid          SPK-ID: 2004288 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: JPL 1 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1780293713519943 8.5245e-08   a 2.627967054109721 2.3765e-08 AU q 2.160111731532814 2.2722e-07 AU i 14.02035125893221 8.9636e-06 deg node 44.64945689338048 2.575e-05 deg peri 324.5536020288374 3.1231e-05 deg M 193.3148329723732 2.1551e-05 deg tp 2457120.981369547717 (2015-Apr-08.48136955) 9.9308e-05 JED period 1556.067031412514 4.26 2.1107e-05 5.779e-08 d yr n .2313525013592836 3.1382e-09 deg/d Q 3.095822376686626 2.7996e-08 AU   Orbit Determination Parameters    # obs. used (total)      980      data-arc span      19562 days (53.56 yr)      first obs. used      1959-09-30      last obs. used      2013-04-21      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .47722      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 13:02:30   Additional Information  Earth MOID = 1.1761 AU   T_jup = 3.337  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 11.8 mag n/a PDS3 (MPC 17271)   rotation period rot_per 3.181 h n/a Asteroid Lightcurve DataBase (Rev. 2013-May-01) Published Reference List: [Koff, R.A. (2003) Minor Planet Bul. 30, 38-39.] 4288 Tokyotech           Discovered 1989 Oct. 8 by T. Kojima at Chiyoda. Founded in 1881 as the Tokyo Vocational School, what is now the Tokyo Institute of Technology was made a degree-conferring university in 1929 and is the largest national institution of higher learning in Japan dedicated to science and technology. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20080819/MPCPages.arc Last Updated: 2008-08-25 Alternate Designations  1989 TQ1 = 1951 XD1 = 1959 SJ = 1962 JG = 1980 NU = 1983 EQ3 = 1983 HA2 = A921 XA  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-25 08:04 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin