+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   12170 Vanvollenhoven (2372 T-3) Classification: Main-belt Asteroid          SPK-ID: 2012170 [ 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 .2997061394702027 7.4582e-08   a 3.061049474202652 2.9775e-08 AU q 2.143634153562081 2.3373e-07 AU i 2.9920941223848 6.7998e-06 deg node 247.5514737930836 0.00017368 deg peri 59.70022089147812 0.00017406 deg M 255.1150825624778 1.465e-05 deg tp 2456970.420777402389 (2014-Nov-08.92077740) 8.3499e-05 JED period 1956.158090957898 5.36 2.8541e-05 7.814e-08 d yr n .1840342054479421 2.6851e-09 deg/d Q 3.978464794843223 3.8698e-08 AU   Orbit Determination Parameters    # obs. used (total)      557      data-arc span      13498 days (36.96 yr)      first obs. used      1976-05-02      last obs. used      2013-04-16      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .61777      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 13:47:32   Additional Information  Earth MOID = 1.13066 AU   T_jup = 3.161  [ 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 14.0 mag n/a PDS3 (MPC 36321)   12170 Vanvollenhoven           Discovered 1977 Oct. 16 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels. Pieter van Vollenhoven (b. 1939) is a professor of risk management at the Technical University of Twente. The Netherlands Ambassador of the International Year of Astronomy (2009), he has actively supported the popularization of astronomy and space science in the Netherlands for many years. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20081212/MPCPages.arc Last Updated: 2008-12-12 [ show close-approach data ] Alternate Designations  2372 T-3 = 1976 JL7 = 1996 BP9  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2013-May-20 02:06 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin