+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   6196 (1991 UO4) Classification: Main-belt Asteroid          SPK-ID: 2006196 [ 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 .09487188474598496 6.8305e-08   a 2.199041024768039 1.5637e-08 AU q 1.990413858114553 1.5493e-07 AU i 6.198090949427623 8.3606e-06 deg node 336.7926862606228 5.6194e-05 deg peri 322.5502333797263 7.0301e-05 deg M 289.4206955071381 4.3528e-05 deg tp 2456634.019578339497 (2013-Dec-07.51957834) 0.00014428 JED period 1191.100547196822 3.26 1.2705e-05 3.478e-08 d yr n .3022414865371665 3.2239e-09 deg/d Q 2.407668191421525 1.7121e-08 AU   Orbit Determination Parameters    # obs. used (total)      1016      data-arc span      11548 days (31.62 yr)      first obs. used      1981-09-05      last obs. used      2013-04-18      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .55131      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 13:20:30   Additional Information  Earth MOID = .979123 AU   T_jup = 3.653  [ 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 13.5 mag n/a PDS3 (MPC 28114)   6196 (1991 UO4)          Discovered 1991-Oct-28 by Ueda and Kaneda at Kushiro (399) Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  1991 UO4 = 1981 RP4 = 1981 SY3  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-21 13:08 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin