+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   6587 Brassens (1984 WA4) Classification: Main-belt Asteroid          SPK-ID: 2006587 [ 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 32 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06605257424199852 2.912e-08   a 2.454630071851684 7.6637e-09 au q 2.292495436794058 7.1641e-08 au i 4.917770130296804 3.9978e-06 deg node 349.8458110859278 3.5875e-05 deg peri 32.24934017605666 4.7139e-05 deg M 176.6421706205572 3.0729e-05 deg tp 2458511.261712615381 (2019-Jan-27.76171262) 0.00011928 TDB period 1404.680335317315 3.85 6.5784e-06 1.801e-08 d yr n .2562860680459917 1.2002e-09 deg/d Q 2.61676470690931 8.1699e-09 au   Orbit Determination Parameters    # obs. used (total)      2342      data-arc span      25550 days (69.95 yr)      first obs. used      1951-02-04      last obs. used      2021-01-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .44208      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 01:32:10   Additional Information  Earth MOID = 1.29472 au   Jupiter MOID = 2.6576 au   T_jup = 3.485  [ 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 13.61   n/a E2021B10   diameter diameter 4.111 km 0.107 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   rotation period rot_per 5.2 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so. Published Reference List: [Chiorny, V.G.; Shevchenko, V.G.; Krugly, Yu.N.; Velichko, F.P.; Gaftonyuk, N.M. (2007) Planet. Space Sci. 55, 986-997.] geometric albedo albedo 0.456   0.038 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   6587 Brassens           Discovered 1984 Nov. 27 at Caussols. Named in memory of Georges Brassens (1921-1981), a French poet born on the Mediterranean coast. This gruff artist with a soft heart sang of human nature through texts that were often nonconformist. Henceforth, accompanied by his faithful guitar, he will belong to the heritage of French culture. Citation provided by members of the Groupement d´Astronomie Populaire de la Région d´Antibes, translated by C. Hayter. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 19961224/MPCPages.arc Last Updated: 2003-09-26 Alternate Designations  1984 WA4 = 1976 SN5 = 1991 PA22 = 1993 BL  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Feb-25 17:09 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin