+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   10256 Vredevoogd (4157 T-3) Classification: Main-belt Asteroid          SPK-ID: 2010256 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: JPL 1 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1021982117556131 7.885e-08   a 2.276320952072479 1.3615e-08 AU q 2.043685021388837 1.7954e-07 AU i 5.934766676485301 9.5116e-06 deg node 163.7345770170544 6.3567e-05 deg peri 345.3820384902522 7.3707e-05 deg M 2.638734236468685 3.6758e-05 deg tp 2456391.305209854257 (2013-Apr-08.80520985) 0.00012808 JED period 1254.436466818032 3.43 1.1254e-05 3.081e-08 d yr n .2869814530449404 2.5746e-09 deg/d Q 2.508956882756121 1.5006e-08 AU   Orbit Determination Parameters    # obs. used (total)      689      data-arc span      12973 days (35.52 yr)      first obs. used      1977-10-07      last obs. used      2013-04-14      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .58484      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 13:39:10   Additional Information  Earth MOID = 1.05494 AU   T_jup = 3.595  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.6 mag n/a PDS3 (MPC 33919)   10256 Westerwald           Discovered 1977 Oct. 16 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels. North of the Lahn river lies the Westerwald, a low mountain range with some volcanoes, blending into the "Siebengebirge", a range of seven extinct volcanic mountains. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20030501/MPCPages.arc Last Updated: 2003-10-02 [ show close-approach data ] Alternate Designations  4157 T-3 = 1989 BH1  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2013-May-24 22:15 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin