+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   11950 Morellet (1993 SG5) Classification: Outer Main-belt Asteroid          SPK-ID: 2011950 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 29 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1366342359271994 3.4842e-08   a 3.215696076098989 1.6057e-08 au q 2.77632189976711 1.0792e-07 au i 1.940095045137835 3.7254e-06 deg node 134.8089376219057 0.00011591 deg peri 351.0072789709085 0.00011683 deg M 111.633565509002 1.5159e-05 deg tp 2458347.364611246656 (2018-Aug-16.86461125) 8.7152e-05 TDB period 2106.254860526185 5.77 1.5776e-05 4.319e-08 d yr n .1709194868801702 1.2802e-09 deg/d Q 3.655070252430868 1.8251e-08 au   Orbit Determination Parameters    # obs. used (total)      1829      data-arc span      13354 days (36.56 yr)      first obs. used      1983-12-29      last obs. used      2020-07-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51162      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 02:56:11   Additional Information  Earth MOID = 1.7917 au   Jupiter MOID = 1.40774 au   T_jup = 3.175  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 13.5   n/a MPO344398   diameter diameter 10.848 km 0.137 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.066   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   11950 Morellet           Discovered 1993 Sept. 19 by E. W. Elst at Caussols. Abbé André Morellet (1727-1819) left his Mémoirs sur le XVIIIe siècle et la Révolution (1821), a precious document about the eighteenth century. Besides several articles for Diderot's Encyclopédie, he refuted, in 1770, Galiani's Dialogues sur le commerce des blés. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20030910/MPCPages.arc Last Updated: 2003-10-02 [ show close-approach data ] Alternate Designations  1993 SG5 = 1983 YL  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-01 11:39 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin