+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   10429 van Woerden (2546 P-L) Classification: Main-belt Asteroid          SPK-ID: 2010429 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ 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 .09220334033558313 7.451e-08   a 2.586635210440484 1.4316e-08 AU q 2.348138803808237 1.8998e-07 AU i 14.84821938918392 1.2451e-05 deg node 185.7773013061174 2.5613e-05 deg peri 255.7858125331335 8.2841e-05 deg M 165.7002317631637 7.3493e-05 deg tp 2455701.106133084824 (2011-May-19.60613308) 0.00031104 JED period 1519.501749697831 4.16 1.2615e-05 3.454e-08 d yr n .2369197666745627 1.9669e-09 deg/d Q 2.825131617072731 1.5636e-08 AU   Orbit Determination Parameters    # obs. used (total)      681      data-arc span      19191 days (52.54 yr)      first obs. used      1960-09-24      last obs. used      2013-04-10      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .52525      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 13:39:56   Additional Information  Earth MOID = 1.41022 AU   T_jup = 3.369  [ show covariance matrix ] [ 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 34167)   10429 van Woerden           Discovered 1960 Sept. 24 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels. Hugo van Woerden (b. 1926) was professor of astronomy in Groningen with a main interest in neutral hydrogen in galaxies. He has been very active in popularizing astronomy and received a Royal Medal "Ridder in de Orde van de Nederlandse Leeuw" in 1992. The citation was prepared by U. Schwarz. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20010705/MPCPages.arc Last Updated: 2009-05-11 Alternate Designations  2546 P-L = 1979 GD  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-25 03:06 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin