+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   9051 (1991 UG3) Classification: Main-belt Asteroid          SPK-ID: 2009051 [ 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 .2150344194549308 7.8084e-08   a 2.402691505411725 2.4343e-08 AU q 1.886030132416221 1.8011e-07 AU i 3.00421616179753 5.8963e-06 deg node 318.1660261333176 0.00013596 deg peri 45.50766354531147 0.00013659 deg M 297.3613877349741 2.4553e-05 deg tp 2456637.192814071236 (2013-Dec-10.69281407) 9.5764e-05 JED period 1360.333666159797 3.72 2.0674e-05 5.66e-08 d yr n .2646409546095224 4.0219e-09 deg/d Q 2.919352878407229 2.9578e-08 AU   Orbit Determination Parameters    # obs. used (total)      946      data-arc span      15318 days (41.94 yr)      first obs. used      1971-04-16      last obs. used      2013-03-24      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .54272      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 13:33:57   Additional Information  Earth MOID = .884569 AU   T_jup = 3.491  [ 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 13.8 mag n/a PDS3 (MPC 32185)   9051 (1991 UG3)          Discovered 1991-Oct-31 by Ueda, S., Kaneda, H. at Kushiro (399) Reference: 19980808/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1991 UG3 = 1950 TY3 = 1989 CY5  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-24 14:52 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin