+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   10647 Meesters (3074 P-L) Classification: Main-belt Asteroid          SPK-ID: 2010647 [ 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 .04524503483421632 1.1202e-07   a 2.976055892516352 3.6408e-08 AU q 2.841404139990875 3.416e-07 AU i 9.453714929466685 9.9831e-06 deg node 226.5538851501159 5.0784e-05 deg peri 315.1450538608371 0.00010081 deg M 279.627777598924 9.0654e-05 deg tp 2456819.161985169746 (2014-Jun-10.66198517) 0.00047432 JED period 1875.253789910017 5.13 3.4411e-05 9.421e-08 d yr n .1919740154303458 3.5228e-09 deg/d Q 3.110707645041829 3.8055e-08 AU   Orbit Determination Parameters    # obs. used (total)      680      data-arc span      19185 days (52.53 yr)      first obs. used      1960-09-25      last obs. used      2013-04-05      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .55176      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 13:41:00   Additional Information  Earth MOID = 1.84966 AU   T_jup = 3.239  [ 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 12.8 mag n/a PDS3 (MPC 34475)   10647 Meesters           Discovered 1960 Sept. 25 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken T. Gehrels. P. G. Meesters (1887-1964) is the Nestor of amateur astronomy in the Netherlands. He built his own observatory and was an active observer of variable stars. His book Mijn Sterrenwacht, Speurtochten langs het Firmament ("My observatory, exploring the skies") is still known by amateurs. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20021120/MPCPages.arc Last Updated: 2003-10-02 [ show close-approach data ] Alternate Designations  3074 P-L = 1981 UM2 = 1988 CD7  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2013-May-25 17:53 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin