+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   239664 (2008 XE) Classification: Main-belt Asteroid          SPK-ID: 2239664 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO241514 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.0901452 n/a   a 2.9307169 n/a AU q 2.6665268 n/a AU i 13.26770 n/a deg node 94.31835 n/a deg peri 311.12735 n/a deg M 350.17823 n/a deg tp 2456450.4972919 (2013-Jun-06.99729190) n/a JED period 1832.5643011 5.02 n/a n/a d yr n 0.19644604 n/a deg/d Q 3.1949070 n/a AU   Orbit Determination Parameters    # obs. used (total)      120      first obs. used      2002-??-??      last obs. used      2012-08-28      # oppositions      6      planetary ephem.      DE403      condition code      0      fit RMS      0.60      data source      MPC:mpu      producer      MPCLINUX   Additional Information  T_jup = 3.230  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 15.2 mag n/a MPO241514   239664 (2008 XE)          Discovered 2008-Dec-01 by Elenin, L. at Tzec Maun (H10) Reference: 20100428/Numbers.arc Last Updated: 2010-05-03 Alternate Designations  2008 XE = 2007 RF279  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-20 19:44 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin