+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   233931 (2009 UF103) Classification: Main-belt Asteroid          SPK-ID: 2233931 [ 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 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1686249415238419 4.7362e-08   a 2.727393002104368 1.9327e-08 au q 2.267486516611984 1.2766e-07 au i 5.959286238549264 4.4699e-06 deg node 71.74883594778333 5.5678e-05 deg peri 330.5214947582558 5.7968e-05 deg M 132.7711114890446 1.6098e-05 deg tp 2458393.734191900556 (2018-Oct-02.23419190) 7.1752e-05 TDB period 1645.204958111869 4.50 1.7487e-05 4.788e-08 d yr n .2188177212966562 2.3259e-09 deg/d Q 3.187299487596753 2.2586e-08 au   Orbit Determination Parameters    # obs. used (total)      313      data-arc span      10357 days (28.36 yr)      first obs. used      1991-12-14      last obs. used      2020-04-22      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .54907      source      ORB      producer      Otto Matic      solution date      2020-May-21 11:14:39   Additional Information  Earth MOID = 1.27866 au   Jupiter MOID = 2.2149 au   T_jup = 3.327  [ 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 16.4   n/a MPO454692   233931 (2009 UF103)          Discovered 2009-Oct-24 by CSS at Catalina Reference: 20100228/Numbers.arc Last Updated: 2010-03-03 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Sep-19 04:11 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin