+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   9698 Idzerda (2205 T-1) Classification: Main-belt Asteroid          SPK-ID: 2009698 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO244270 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.0523538 n/a   a 2.3659255 n/a AU q 2.2420603 n/a AU i 7.36706 n/a deg node 7.66159 n/a deg peri 186.22648 n/a deg M 189.63343 n/a deg tp 2457029.5452472 (2015-Jan-07.04524720) n/a JED period 1329.2296077 3.64 n/a n/a d yr n 0.27083357 n/a deg/d Q 2.4897907 n/a AU   Orbit Determination Parameters    # obs. used (total)      841      first obs. used      1971-??-??      last obs. used      2012-11-12      # oppositions      14      planetary ephem.      DE403      condition code      0      fit RMS      0.56      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.535  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.2 mag n/a PDS3 (MPC 32913)   9698 Idzerda           Discovered 1971 Mar. 25 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels. Hanso Henricus Schotanus Steringa Idzerda (1885-1944) invented the vacuum triode for amplifying audio and radio signals. In November 1919 he started the first radio broadcasting station in the world from The Hague. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20001111/MPCPages.arc Last Updated: 2013-03-29 Alternate Designations  2205 T-1 = 1980 XQ1 = 1991 XM6  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-23 17:08 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin