+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   11764 Benbaillaud (6531 P-L) Classification: Main-belt Asteroid          SPK-ID: 2011764 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB Reference: JPL 38 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06903104473158694 2.8914e-08   a 2.194674565565975 6.1279e-09 au q 2.043173887459115 6.4359e-08 au i 4.703752295168695 3.4147e-06 deg node 16.30762065435817 3.8562e-05 deg peri 19.9301684339717 4.7888e-05 deg M 215.7294113890037 3.0319e-05 deg tp 2459872.414487611367 (2022-Oct-19.91448761) 0.00010086 TDB period 1187.554699745873 3.25 4.9738e-06 1.362e-08 d yr n .3031439310349552 1.2696e-09 deg/d Q 2.346175243672836 6.5509e-09 au   Orbit Determination Parameters    # obs. used (total)      1742      data-arc span      22190 days (60.75 yr)      first obs. used      1960-09-24      last obs. used      2021-06-26      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .47694      source      ORB      producer      Otto Matic      solution date      2021-Jul-08 02:47:45   Additional Information  Earth MOID = 1.04925 au   Jupiter MOID = 2.88544 au   T_jup = 3.662  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.63   n/a MPO614063   diameter diameter 3.133 km 0.140 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.260   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   11764 Benbaillaud           Discovered 1960 Sept. 24 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels. Benjamin Baillaud (1848-1934) was a director of the Toulouse (1878-1907) and Paris (1907-1926) Observatories. He founded the Pic du Midi Observatory and served as first president of the International Astronomical Union. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20070926/MPCPages.arc Last Updated: 2007-09-30 Alternate Designations  6531 P-L = 3007 T-2  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Aug-02 07:34 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin