+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 30 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1357809326905455 3.4714e-08   a 3.21920028053307 1.5776e-08 au q 2.782094263924624 1.0735e-07 au i 1.940961418288216 3.7139e-06 deg node 134.7815627462341 0.00011523 deg peri 351.3843615344156 0.00011617 deg M 145.4392061199893 1.5287e-05 deg tp 2458348.186403195679 (2018-Aug-17.68640320) 8.7474e-05 TDB period 2109.698636531434 5.78 1.5508e-05 4.246e-08 d yr n .1706404856913013 1.2543e-09 deg/d Q 3.656306297141516 1.7918e-08 au   Orbit Determination Parameters    # obs. used (total)      1853      data-arc span      13354 days (36.56 yr)      first obs. used      1983-12-29      last obs. used      2020-07-21      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .51023      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 23:02:51   Additional Information  Earth MOID = 1.79734 au   Jupiter MOID = 1.40468 au   T_jup = 3.174  [ 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-May-17 14:41 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin