+ View the NASA Portal + Near-Earth Object (NEO) Project Search JPL JPL Small-Body Database Browser Search: [ help ]   22942 Alexacourtis (1999 TZ205) Classification: Main-belt Asteroid          SPK-ID: 2022942 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2455200.5 (2010-Jan-04.0) TDB Reference: MPO73883 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1006466 n/a   a 2.7140508 n/a AU q 2.4408908 n/a AU i 4.16507 n/a deg node 358.73752 n/a deg peri 297.73647 n/a deg M 201.71095 n/a deg tp 2455918.5815182 (2011-Dec-23.08151821) n/a JED period 1633.1473753 4.47 n/a n/a d yr n 0.22043326 n/a deg/d Q 2.9872108 n/a AU   Orbit Determination Parameters    # obs. used (total)      259      first obs. used      1992-??-??      last obs. used      2005-02-03      # oppositions      9      planetary ephem.      DE403      quality code      0      fit RMS      0.62      data source      MPC:mpn      producer      MPC   Additional Information  T_jup = 3.350  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.6 mag n/a PDS3 (MPO 10160)   22942 Alexacourtis           Discovered 1999 Oct. 13 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro. Alexandra Maria Courtis (b. 1990) is a finalist in the 2007 Intel Science Talent Search (STS), a science competition for high school seniors, for her chemistry project. She attends the Davis Senior High School, Davis, California. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20070303/MPCPages.arc Last Updated: 2007-03-07 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2009-Nov-23 20:24 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin