+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   34543 Davidbriggs (2000 SM229) Classification: Main-belt Asteroid          SPK-ID: 2034543 [ 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 .054646887774294 5.9287e-08   a 2.937680309817156 4.2409e-08 AU q 2.777145223609825 1.8218e-07 AU i 1.102417029058314 6.5606e-06 deg node 301.51043009 0.00055054 deg peri 340.0370693078598 0.0005651 deg M 275.6781521140828 0.00013483 deg tp 2456831.267410994958 (2014-Jun-22.76741099) 0.00069013 JED period 1839.099496111546 5.04 3.9825e-05 1.09e-07 d yr n .1957479738106377 4.2388e-09 deg/d Q 3.098215396024488 4.4727e-08 AU   Orbit Determination Parameters    # obs. used (total)      540      data-arc span      5510 days (15.09 yr)      first obs. used      1998-03-20      last obs. used      2013-04-20      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .63214      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 15:15:35   Additional Information  Earth MOID = 1.76083 AU   T_jup = 3.271  [ 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 15.1 mag n/a PDS3 (MPO 21793)   34543 Davidbriggs           Discovered 2000 Sept. 28 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro. As director of the Massachusetts Institute of Technology's Lincoln Laboratory from 1998 to 2006 David L. Briggs (b. 1940) was known for his exceptional strategic vision and technical leadership in support of national security. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20060613/MPCPages.arc Last Updated: 2008-05-22 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2013-May-26 00:21 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin