+ View the NASA Portal + Near-Earth Object (NEO) Project 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 2455200.5 (2010-Jan-04.0) TDB Reference: MPO164087 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.0783511 n/a   a 2.3872364 n/a AU q 2.2001938 n/a AU i 6.93680 n/a deg node 62.00437 n/a deg peri 158.23277 n/a deg M 128.72958 n/a deg tp 2454718.7547540 (2008-Sep-09.25475400) n/a JED period 1347.2295067 3.69 n/a n/a d yr n 0.26721505 n/a deg/d Q 2.5742790 n/a AU   Orbit Determination Parameters    # obs. used (total)      540      first obs. used      1995-??-??      last obs. used      2009-10-20      # oppositions      10      planetary ephem.      DE403      quality code      0      fit RMS      0.55      data source      MPC:mpn      producer      MPC   Additional Information  T_jup = 3.520  [ 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 ] 2009-Nov-23 20:43 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin