+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   10438 Ludolph (6615 P-L) Classification: Main-belt Asteroid          SPK-ID: 2010438 [ 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 .093710538208935 8.7685e-08   a 2.232713623832821 1.0282e-08 AU q 2.023484828477026 1.9664e-07 AU i 4.702173448996473 8.719e-06 deg node 19.00033501802887 7.2844e-05 deg peri 180.9291987210975 8.0846e-05 deg M 67.24630436809102 3.4282e-05 deg tp 2456172.878185153267 (2012-Sep-02.37818515) 0.00011599 JED period 1218.562924979218 3.34 8.4174e-06 2.305e-08 d yr n .2954299631314811 2.0407e-09 deg/d Q 2.441942419188616 1.1245e-08 AU   Orbit Determination Parameters    # obs. used (total)      974      data-arc span      21283 days (58.27 yr)      first obs. used      1954-12-30      last obs. used      2013-04-07      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .51838      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 13:39:57   Additional Information  Earth MOID = 1.02092 AU   T_jup = 3.630  [ 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 14.5 mag n/a PDS3 (MPC 34169)   10438 Ludolph           Discovered 1960 Sept. 24 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels. Ludolph van Ceulen (1540-1610) was a German-Dutch mathematician who is famous for his calculation of \pi to 35 places. He did this using polygons of 262 sides. His result, 3.14159265358979323846264338327950288, known as the Ludolphine number, is engraved on his tombstone in Leiden. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20010804/MPCPages.arc Last Updated: 2009-05-11 Alternate Designations  6615 P-L = 1992 BU1  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-Jun-19 07:34 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin