+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   44117 Haroldlarson (1998 HL27) Classification: Main-belt Asteroid          SPK-ID: 2044117 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO250626 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.0724181 n/a   a 2.3578650 n/a AU q 2.1871129 n/a AU i 3.87738 n/a deg node 124.73906 n/a deg peri 95.81058 n/a deg M 52.94149 n/a deg tp 2456206.0219986 (2012-Oct-05.52199860) n/a JED period 1322.4425779 3.62 n/a n/a d yr n 0.27222354 n/a deg/d Q 2.5286171 n/a AU   Orbit Determination Parameters    # obs. used (total)      677      first obs. used      1998-??-??      last obs. used      2012-04-23      # oppositions      11      planetary ephem.      DE403      condition code      0      fit RMS      0.54      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.547  [ 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 MPO250626   44117 Haroldlarson           Discovered 1998 Apr. 21 by Spacewatch at Kitt Peak. Harold P. Larson (b. 1938), pioneering airborne infrared astronomer and educator at the University of Arizona, discovered the presence of water in Jupiter's atmosphere. He is a distinguished educator, winning awards for innovative work with undergraduate students. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20070730/MPCPages.arc Last Updated: 2007-08-07 Alternate Designations  1998 HL27 = 1999 RM239  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-Jun-19 14:51 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin