+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   268425 (2005 UB491) Classification: Main-belt Asteroid          SPK-ID: 2268425 [ 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 .08137541803960886 7.6273e-08   a 2.477193847809421 1.8513e-08 au q 2.275611162878782 1.985e-07 au i 5.571566138894806 6.7101e-06 deg node 353.2715474960408 3.6604e-05 deg peri 338.5746329142845 4.8847e-05 deg M 336.0550272311885 2.819e-05 deg tp 2459095.221869870700 (2020-Sep-02.72186987) 0.00011087 TDB period 1424.093210824915 3.90 1.5964e-05 4.371e-08 d yr n .2527924417190836 2.8338e-09 deg/d Q 2.67877653274006 2.002e-08 au   Orbit Determination Parameters    # obs. used (total)      324      data-arc span      6971 days (19.09 yr)      first obs. used      2001-10-14      last obs. used      2020-11-14      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52239      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 00:22:17   Additional Information  Earth MOID = 1.26634 au   Jupiter MOID = 2.59669 au   T_jup = 3.469  [ 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 MPO433742   268425 (2005 UB491)          Discovered 2005-Oct-23 by NEAT at Palomar Reference: 20110319/Numbers.arc Last Updated: 2011-03-23 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-25 08:50 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin