+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   259060 (2002 UM3) Classification: Mars-crossing Asteroid          SPK-ID: 2259060 [ 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 .1691224898138523 7.9679e-08   a 1.885584385334922 7.3169e-09 au q 1.566689659332958 1.488e-07 au i 25.8374201052224 9.5595e-06 deg node 68.88813206041458 8.5004e-06 deg peri 316.5269095517445 2.1994e-05 deg M 293.2446673241919 2.13e-05 deg tp 2459175.868202409185 (2020-Nov-22.36820241) 5.6464e-05 TDB period 945.7304807977641 2.59 5.5048e-06 1.507e-08 d yr n .380658133907585 2.2157e-09 deg/d Q 2.204479111336887 8.5544e-09 au   Orbit Determination Parameters    # obs. used (total)      347      data-arc span      6583 days (18.02 yr)      first obs. used      2002-10-28      last obs. used      2020-11-05      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .54567      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 05:50:19   Additional Information  Earth MOID = .622827 au   Jupiter MOID = 3.24202 au   T_jup = 3.828  [ 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 17.3   n/a MPO418378   259060 (2002 UM3)          Discovered 2002-Oct-28 by LINEAR at Socorro Reference: 20110119/Numbers.arc Last Updated: 2011-01-25 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-24 23:33 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin