+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   12171 Johannink (2382 T-3) Classification: Main-belt Asteroid          SPK-ID: 2012171 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO234907 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.0595015 n/a   a 2.7385985 n/a AU q 2.5756478 n/a AU i 2.37606 n/a deg node 310.88089 n/a deg peri 274.28774 n/a deg M 93.25905 n/a deg tp 2455971.6756175 (2012-Feb-14.17561750) n/a JED period 1655.3543886 4.53 n/a n/a d yr n 0.21747609 n/a deg/d Q 2.9015492 n/a AU   Orbit Determination Parameters    # obs. used (total)      536      first obs. used      1977-??-??      last obs. used      2012-07-07      # oppositions      13      planetary ephem.      DE403      condition code      0      fit RMS      0.57      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.347  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.8 mag n/a PDS3 (MPC 36321)   12171 Johannink           Discovered 1977 Oct. 16 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels. Carl F. Johannink (b. 1959) is a Dutch high-school teacher and amateur astronomer. His main interests lie in meteor astronomy. He is a very prolific meteor observer, active within the Dutch Meteor Society. The name was suggested by K. Miskotte. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20100330/MPCPages.arc Last Updated: 2010-04-05 Alternate Designations  2382 T-3 = 1998 HC45  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-Jun-19 03:27 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin