+ 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 2459000.5 (2020-May-31.0) TDB Reference: JPL 34 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06880509337925693 3.255e-08   a 2.195162828534855 6.9883e-09 au q 2.044124445134841 7.0885e-08 au i 4.703204738285555 4.1872e-06 deg node 16.31019234412644 4.8949e-05 deg peri 20.07054590916937 6.0222e-05 deg M 95.5535480048235 3.5041e-05 deg tp 2458685.186290619002 (2019-Jul-20.68629062) 0.00011555 TDB period 1187.951025862789 3.25 5.6728e-06 1.553e-08 d yr n .3030427956729427 1.4471e-09 deg/d Q 2.34620121193487 7.4691e-09 au   Orbit Determination Parameters    # obs. used (total)      1549      data-arc span      21782 days (59.64 yr)      first obs. used      1960-09-24      last obs. used      2020-05-14      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .48398      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 02:57:25   Additional Information  Earth MOID = 1.05094 au   Jupiter MOID = 2.88581 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 14.6   n/a MPO452336   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-Jan-28 03:44 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin