+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   7005 Henninghaack (1981 ET25) Classification: Main-belt Asteroid          SPK-ID: 2007005 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO250278 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.0990838 n/a   a 2.4191196 n/a AU q 2.1794240 n/a AU i 6.17128 n/a deg node 182.73219 n/a deg peri 100.49777 n/a deg M 97.68570 n/a deg tp 2456027.5823646 (2012-Apr-10.08236460) n/a JED period 1374.3091234 3.76 n/a n/a d yr n 0.26194980 n/a deg/d Q 2.6588152 n/a AU   Orbit Determination Parameters    # obs. used (total)      969      first obs. used      1981-??-??      last obs. used      2012-12-13      # oppositions      16      planetary ephem.      DE403      condition code      0      fit RMS      0.55      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.500  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.3 mag n/a PDS3 (MPC 27292)   7005 Henninghaack           Discovered 1981 Mar. 2 by S. J. Bus at Siding Spring in the course of the U.K. Schmidt-Caltech Asteroid Survey. Henning Haack (b. 1961) is curator of meteorites at the Geological Museum in Copenhagen. His research includes the timing of formation, cooling history and parent body structures of iron meteorites. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20060809/MPCPages.arc Last Updated: 2007-08-08 Alternate Designations  1981 ET25 = 1990 UT3  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-22 18:57 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin