+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   447258 (2005 UC311) Classification: Main-belt Asteroid          SPK-ID: 2447258 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 10 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .05599298129621509 1.4325e-07   a 2.969836686083784 7.6924e-08 au q 2.803546676067082 4.7935e-07 au i 5.256252246573625 9.525e-06 deg node 182.7686780356651 9.7587e-05 deg peri 163.5215228117653 0.00015127 deg M 344.7523250090977 0.00011315 deg tp 2459079.676883608426 (2020-Aug-18.17688361) 0.0005884 TDB period 1869.3786505838 5.12 7.263e-05 1.989e-07 d yr n .1925773571274997 7.4821e-09 deg/d Q 3.136126696100487 8.1231e-08 au   Orbit Determination Parameters    # obs. used (total)      76      data-arc span      5940 days (16.26 yr)      first obs. used      2003-04-01      last obs. used      2019-07-06      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .64263      source      ORB      producer      Otto Matic      solution date      2019-Sep-24 07:48:58   Additional Information  Earth MOID = 1.79696 au   Jupiter MOID = 2.11797 au   T_jup = 3.254  [ hide covariance matrix ] Orbital Elements at Epoch 2457711.5 (2016-Nov-19.0) TDB Reference: JPL 10 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .05907302840888891 1.4404e-07   q 2.793440141861327 4.8262e-07 au tp 2457213.782272785470 (2015-Jul-10.28227279) 0.00053952 TDB node 182.9591178011762 9.7442e-05 deg peri 164.1398902754485 0.00014633 deg i 5.260542797598776 9.5413e-06 deg   Orbit Determination Parameters    # obs. used (total)      76      data-arc span      5940 days (16.26 yr)      first obs. used      2003-04-01      last obs. used      2019-07-06      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .64263      source      ORB      producer      Otto Matic      solution date      2019-Sep-24 07:48:58   Additional Information  Jupiter MOID = 2.11797 au   T_jup = 3.254  Orbit Covariance (6×6)   e q tp node peri i e 2.074702518045519E-14 -6.912881301228892E-14 2.304417648809806E-11 8.29702086574774E-14 4.96150244010549E-12 3.842183326118687E-15 q -6.912881301228892E-14 2.3292035430386E-13 -6.2505790241654E-11 -2.710755046931647E-13 -1.358468260853106E-11 -1.503824596638535E-15 tp 2.304417648809806E-11 -6.2505790241654E-11 2.910848518417657E-7 1.92930913596778E-10 5.898373364458915E-8 1.558617667761034E-10 node 8.29702086574774E-14 -2.710755046931647E-13 1.92930913596778E-10 9.494979992089406E-9 -9.414179255745288E-9 2.639987985694191E-10 peri 4.96150244010549E-12 -1.358468260853106E-11 5.898373364458915E-8 -9.414179255745288E-9 2.141315082702227E-8 -2.313977163751124E-10 i 3.842183326118687E-15 -1.503824596638535E-15 1.558617667761034E-10 2.639987985694191E-10 -2.313977163751124E-10 9.103622498337553E-11 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 17.0   n/a MPO477127   447258 (2005 UC311)          Discovered 2005-Oct-29 by Mt. Lemmon Survey at Mount Lemmon Reference: Last Updated: 2015-10-28 Alternate Designations  2005 UC311 = 2010 TO96  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Aug-04 12:38 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin