+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   23466 (1990 DU4) Classification: Main-belt Asteroid          SPK-ID: 2023466 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO233652 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1428012 n/a   a 2.3386772 n/a AU q 2.0047113 n/a AU i 2.64303 n/a deg node 186.65651 n/a deg peri 270.18425 n/a deg M 224.74838 n/a deg tp 2456891.2878678 (2014-Aug-21.78786780) n/a JED period 1306.3328367 3.58 n/a n/a d yr n 0.27558061 n/a deg/d Q 2.6726431 n/a AU   Orbit Determination Parameters    # obs. used (total)      702      first obs. used      1988-??-??      last obs. used      2012-06-12      # oppositions      14      planetary ephem.      DE403      condition code      0      fit RMS      0.56      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.551  [ 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 (MPO 11094)   23466 (1990 DU4)          Discovered 1990-Feb-28 by Debehogne, H. at La Silla (809) Reference: 20010408/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1990 DU4 = 1988 RQ14 = 1990 GD1  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-25 11:29 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin