+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   23098 Huanghuang (1999 XH158) Classification: Main-belt Asteroid          SPK-ID: 2023098 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO253521 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.0970327 n/a   a 2.7458507 n/a AU q 2.4794134 n/a AU i 3.67698 n/a deg node 196.63056 n/a deg peri 128.01245 n/a deg M 78.33211 n/a deg tp 2456038.8811026 (2012-Apr-21.38110260) n/a JED period 1661.9340786 4.55 n/a n/a d yr n 0.21661509 n/a deg/d Q 3.0122880 n/a AU   Orbit Determination Parameters    # obs. used (total)      549      first obs. used      1992-??-??      last obs. used      2013-02-05      # oppositions      14      planetary ephem.      DE403      condition code      0      fit RMS      0.53      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.338  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.1 mag n/a PDS3 (MPO 10209)   23098 Huanghuang           Discovered 1999 Dec. 8 by the Lincoln Laboratory Near-Earth Asteroid Research Team in Socorro. Huang Huang (b. 1988) was awarded second place in the 2007 Intel International Science and Engineering Fair for her biochemistry project. She attends the Caddo Parish Magnet High School, Shreveport, Louisiana, U.S.A. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20070828/MPCPages.arc Last Updated: 2007-08-30 Alternate Designations  1999 XH158 = 1992 EB32 = 1998 QU11  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-Jun-18 23:11 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin