+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   9600 (1991 UB3) Classification: Main-belt Asteroid          SPK-ID: 2009600 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO253431 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1967612 n/a   a 2.2933829 n/a AU q 1.8421341 n/a AU i 4.93024 n/a deg node 60.08716 n/a deg peri 334.57996 n/a deg M 67.25734 n/a deg tp 2456163.4988436 (2012-Aug-23.99884360) n/a JED period 1268.5666177 3.47 n/a n/a d yr n 0.28378486 n/a deg/d Q 2.7446317 n/a AU   Orbit Determination Parameters    # obs. used (total)      671      first obs. used      1953-??-??      last obs. used      2013-02-14      # oppositions      15      planetary ephem.      DE403      condition code      0      fit RMS      0.59      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.566  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.4 mag n/a PDS3 (MPC 32889)   9600 (1991 UB3)          Discovered 1991-Oct-31 by Ueda, S., Kaneda, H. at Kushiro (399) Reference: 19981110/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1991 UB3 = 1993 HM3  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-25 00:37 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin