+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   437240 (2012 XM23) Classification: Main-belt Asteroid          SPK-ID: 2437240 [ 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 8 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1650844062815976 8.4017e-08   a 2.713008750500048 4.2934e-08 au q 2.265133311686969 2.354e-07 au i 3.865333612011285 1.0645e-05 deg node 62.79841273628701 0.00014369 deg peri 265.8091042479713 0.00014713 deg M 320.6587528692874 3.4613e-05 deg tp 2459178.869601061742 (2020-Nov-25.36960106) 0.00015848 TDB period 1632.206934591503 4.47 3.8745e-05 1.061e-07 d yr n .2205602686586418 5.2356e-09 deg/d Q 3.160884189313128 5.0021e-08 au   Orbit Determination Parameters    # obs. used (total)      85      data-arc span      5615 days (15.37 yr)      first obs. used      2003-11-18      last obs. used      2019-04-03      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .71359      source      ORB      producer      Otto Matic      solution date      2019-Jul-14 14:58:54   Additional Information  Earth MOID = 1.25798 au   Jupiter MOID = 2.1901 au   T_jup = 3.339  [ 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 MPO434608   437240 (2012 XM23)          Discovered 2003-Nov-18 by Spacewatch at Kitt Peak Reference: Last Updated: 2015-06-04 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Jul-10 07:01 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin