+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   434603 (2005 UR305) Classification: Main-belt Asteroid          SPK-ID: 2434603 [ 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 13 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1401979308315422 5.6412e-08   a 2.367641996705985 2.0456e-08 au q 2.035703487817945 1.3774e-07 au i 6.397285501885627 1.1646e-05 deg node 225.1931283463695 5.7577e-05 deg peri 88.95752560363347 7.7488e-05 deg M 70.53036266803707 5.5155e-05 deg tp 2458739.796960076754 (2019-Sep-13.29696008) 0.00020164 TDB period 1330.676474954536 3.64 1.7246e-05 4.722e-08 d yr n .2705390880321227 3.5062e-09 deg/d Q 2.699580505594025 2.3324e-08 au   Orbit Determination Parameters    # obs. used (total)      129      data-arc span      6546 days (17.92 yr)      first obs. used      2001-09-20      last obs. used      2019-08-23      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55145      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 10:08:22   Additional Information  Earth MOID = 1.03424 au   Jupiter MOID = 2.56776 au   T_jup = 3.525  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 17.5   n/a MPO495163   434603 (2005 UR305)          Discovered 2005-Oct-27 by Mt. Lemmon Survey at Mount Lemmon Reference: Last Updated: 2015-06-04 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-26 16:44 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin