+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   10954 Spiegel (4545 P-L) Classification: Main-belt Asteroid          SPK-ID: 2010954 [ 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 .03111568135169817 6.3351e-08   a 2.944395498146294 2.1507e-08 AU q 2.852778626052599 1.9109e-07 AU i 1.392109986769657 6.4393e-06 deg node 198.9448985153871 0.00027407 deg peri 93.67717142105282 0.00029621 deg M 210.4590500515761 0.00011693 deg tp 2457167.067281471300 (2015-May-24.56728147) 0.00060091 JED period 1845.409042973494 5.05 2.022e-05 5.536e-08 d yr n .1950787015869038 2.1374e-09 deg/d Q 3.036012370239989 2.2177e-08 AU   Orbit Determination Parameters    # obs. used (total)      940      data-arc span      19188 days (52.53 yr)      first obs. used      1960-09-24      last obs. used      2013-04-07      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .56308      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 13:42:24   Additional Information  Earth MOID = 1.8371 AU   T_jup = 3.271  [ 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 13.6 mag n/a PDS3 (MPC 34811)   10954 Spiegel           Discovered 1960 Sept. 24 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels. Beate Spiegel (b. 1960) serves as head of the office of the Klaus Tschira Foundation. She was instrumental in supporting the project "Digitization of the Palomar-Leiden Survey and the T- n Trojan Surveys" of the van Houtens. The name was suggested by L. D. Schmadel. 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 Alternate Designations  4545 P-L = 1990 RK6  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-25 21:19 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin