+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 36 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06893130219620432 3.183e-08   a 2.194855648115217 6.8006e-09 au q 2.043561390157941 6.96e-08 au i 4.703602876331295 4.099e-06 deg node 16.30716678961985 4.6848e-05 deg peri 19.9937662554753 5.7522e-05 deg M 156.2436626352076 3.3806e-05 deg tp 2458685.025387025731 (2019-Jul-20.52538703) 0.00011123 TDB period 1187.701680445123 3.25 5.52e-06 1.511e-08 d yr n .3031064163057177 1.4087e-09 deg/d Q 2.346149906072494 7.2693e-09 au   Orbit Determination Parameters    # obs. used (total)      1588      data-arc span      22087 days (60.47 yr)      first obs. used      1960-09-24      last obs. used      2021-03-15      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .48708      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 22:57:12   Additional Information  Earth MOID = 1.04918 au   Jupiter MOID = 2.88559 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 14.62   n/a E2021B10   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-Apr-16 18:48 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin