+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   24238 Adkerson (1999 XQ97) Classification: Main-belt Asteroid          SPK-ID: 2024238 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO236516 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.0792828 n/a   a 2.3861065 n/a AU q 2.1969293 n/a AU i 6.93927 n/a deg node 61.97887 n/a deg peri 157.67884 n/a deg M 90.17359 n/a deg tp 2456063.2825565 (2012-May-15.78255650) n/a JED period 1346.2731121 3.69 n/a n/a d yr n 0.26740488 n/a deg/d Q 2.5752837 n/a AU   Orbit Determination Parameters    # obs. used (total)      720      first obs. used      1995-??-??      last obs. used      2012-08-27      # oppositions      12      planetary ephem.      DE403      condition code      0      fit RMS      0.54      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.521  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.4 mag n/a PDS3 (MPO 11348)   24238 Adkerson           Discovered 1999 Dec. 7 by the Lincoln Laboratory Near-Earth Asteroid Research Team in Socorro. Timothy Adkerson mentored a finalist in the 2008 Intel Science Talent Search (STS), a science competition for high school seniors. He teaches at the Jefferson City High School, Jefferson City, Missouri. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20080221/MPCPages.arc Last Updated: 2008-03-05 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-23 12:09 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin