+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   117340 (2004 XM23) Classification: Main-belt Asteroid          SPK-ID: 2117340 [ 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 21 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2571855853183594 4.205e-08   a 2.306919375999875 1.1633e-08 au q 1.713612966001083 9.6973e-08 au i 22.73885432635094 5.3588e-06 deg node 126.8873210063001 1.2989e-05 deg peri 120.4938930511867 1.6761e-05 deg M 60.24865421840019 1.1761e-05 deg tp 2458786.313594924172 (2019-Oct-29.81359492) 4.1091e-05 TDB period 1279.81457557187 3.50 9.6809e-06 2.65e-08 d yr n .2812907485751506 2.1278e-09 deg/d Q 2.900225785998667 1.4625e-08 au   Orbit Determination Parameters    # obs. used (total)      1075      data-arc span      8306 days (22.74 yr)      first obs. used      1998-01-28      last obs. used      2020-10-25      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49136      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 18:19:27   Additional Information  Earth MOID = .787267 au   Jupiter MOID = 2.46857 au   T_jup = 3.442  [ 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 14.7   n/a MPO385514   117340 (2004 XM23)          Discovered 2004-Dec-08 by LINEAR at Socorro Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Nov-27 04:37 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin