+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   259531 (2003 UL53) Classification: Main-belt Asteroid          SPK-ID: 2259531 [ 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 12 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1728743032057772 6.3379e-08   a 2.223570176967737 1.1408e-08 au q 1.839172031995293 1.4474e-07 au i 6.210887068503627 7.7522e-06 deg node 303.5889538131962 5.7782e-05 deg peri 79.93395823071418 6.4565e-05 deg M 10.36645632455597 2.7672e-05 deg tp 2458965.625940096603 (2020-Apr-26.12594010) 9.2935e-05 TDB period 1211.085174350633 3.32 9.3199e-06 2.552e-08 d yr n .2972540723182637 2.2875e-09 deg/d Q 2.607968321940181 1.338e-08 au   Orbit Determination Parameters    # obs. used (total)      231      data-arc span      7267 days (19.90 yr)      first obs. used      2000-12-19      last obs. used      2020-11-11      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .5643      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 05:50:33   Additional Information  Earth MOID = .854494 au   Jupiter MOID = 2.88425 au   T_jup = 3.620  [ 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   259531 (2003 UL53)          Discovered 2003-Oct-18 by NEAT at Palomar Reference: 20110119/Numbers.arc Last Updated: 2011-01-25 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-22 04:08 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin