+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   259552 (2003 UR139) Classification: Main-belt Asteroid          SPK-ID: 2259552 [ 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 15 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1357990733770908 4.7913e-08   a 2.248959612790691 8.344e-09 au q 1.943552981311214 1.0658e-07 au i 5.685237324544402 4.6182e-06 deg node 62.4930838797074 4.0863e-05 deg peri 317.4144066799438 4.315e-05 deg M 332.1290365082157 1.2991e-05 deg tp 2459095.871890850161 (2020-Sep-03.37189085) 4.4491e-05 TDB period 1231.887111336455 3.37 6.8558e-06 1.877e-08 d yr n .2922345697808638 1.6264e-09 deg/d Q 2.554366244270168 9.4772e-09 au   Orbit Determination Parameters    # obs. used (total)      312      data-arc span      6269 days (17.16 yr)      first obs. used      2003-09-18      last obs. used      2020-11-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .48476      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 00:16:51   Additional Information  Earth MOID = .950968 au   Jupiter MOID = 2.90077 au   T_jup = 3.610  [ 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 17.1   n/a MPO437205   259552 (2003 UR139)          Discovered 2003-Oct-16 by LONEOS at Anderson Mesa Reference: 20110119/Numbers.arc Last Updated: 2011-01-25 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-24 23:23 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin