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  • MPEC 2023-J173 : S/2019 S 18

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    M.P.E.C. 2023-J173                                 Issued 2023 May 15, 18:06 UT
    
         The Minor Planet Electronic Circulars contain information on unusual
             minor planets, routine data on comets and natural satellites,
             and occasional editorial announcements.  They are published
        on behalf of Division F of the International Astronomical Union by the
              Minor Planet Center, Smithsonian Astrophysical Observatory,
                              Cambridge, MA 02138, U.S.A.
    			  
                 Prepared using the Tamkin Foundation Computer Network
    
                                  MPC@CFA.HARVARD.EDU
                URL https://www.minorplanetcenter.net/    ISSN 1523-6714
    
                                   S/2019 S 18                               
                               Satellite of Saturn                           
    
    
    Observations:
        SK19S180 5C2007 03 21.26328 09 23 04.942+16 24 15.30                EJ173568
        SK19S180 5C2007 03 21.28786 09 23 04.683+16 24 16.63         25   R EJ173568
        SK19S180*RC2019 07 03.38705 19 13 13.35 -21 33 03.3                cEJ173568
        SK19S180 RC2019 07 03.42999 19 13 12.55 -21 33 05.1          26.1 wcEJ173568
        SK19S180 RC2019 07 03.43285 19 13 12.51 -21 33 05.1          26.2 wcEJ173568
        SK19S180 RC2019 07 03.47002 19 13 11.80 -21 33 06.5          26.4 wcEJ173568
        SK19S180 RC2019 07 03.48147 19 13 11.59 -21 33 07.0                cEJ173568
        SK19S180 RC2019 07 04.42130 19 12 54.37 -21 33 42.3                cEJ173568
        SK19S180 RC2019 07 04.47293 19 12 53.40 -21 33 44.3                cEJ173568
        SK19S180 RC2019 07 04.48438 19 12 53.18 -21 33 44.7                cEJ173568
        SK19S180 RC2020 06 24.50077 20 13 16.34 -19 59 51.3                cEJ173568
        SK19S180 RC2020 06 24.52648 20 13 15.96 -19 59 52.8          26.7 wcEJ173568
        SK19S180 RC2020 06 24.54650 20 13 15.66 -19 59 53.8          26.8 wcEJ173568
        SK19S180 RC2020 06 29.46061 20 12 00.61 -20 04 44.6          26.3 wcEJ173568
        SK19S180 RC2020 06 29.52346 20 11 59.61 -20 04 48.4                cEJ173568
        SK19S180 RC2021 07 08.45743 21 01 47.88 -18 04 57.7                cEJ173568
        SK19S180 RC2021 07 08.46893 21 01 47.71 -18 04 58.7          26.4 wcEJ173568
        SK19S180 RC2021 07 08.52071 21 01 46.90 -18 05 02.5          26.6 wcEJ173568
    
    Observer details:
    568 Maunakea.  Observers S. S. Sheppard, D. C. Jewitt, E. J. Ashton, B. J.
        Gladman, J.-M. Petit, M. Alexandersen.  Measurers S. S. Sheppard, E. J.
        Ashton, M. Beaudoin, B. J. Gladman.  8.2-m reflector + CCD, 3.5-m Canada-
        France-Hawaii Telescope + CCD, CFHT 3.5m + CCD.
    
    Orbital elements:
        S/2019 S 18                                                                 
    Epoch 2023 Feb. 25.0 TT = JDT 2460000.5                 Alexandersen            
    M  81.92200              (2000.0)            P               Q                  
    n   0.26671890     Peri.  356.09668     -0.17844445     -0.84166188             
    a   0.1574579      Node   256.38921     -0.88796259     -0.08539840             
    e   0.4866782      Incl.  148.37240     -0.42388680     +0.53320952             
    P   3.70           H   16.6           P/d  1349.74                              
    From 18 observations 2007 Mar. 21-2021 Jul. 08, mean residual 0".05             
    
    Residuals in seconds of arc
    070321 568  0.1-  0.0     190703 568  0.0   0.0     200624 568  0.0   0.1+
    070321 568  0.1+  0.1+    190704 568  0.0   0.0     200629 568  0.0   0.1-
    190703 568  0.1-  0.1+    190704 568  0.0   0.1-    200629 568  0.3+  0.1-
    190703 568  0.1-  0.0     190704 568  0.1-  0.0     210708 568  0.2-  0.0
    190703 568  0.1+  0.1+    200624 568  0.1-  0.0     210708 568  0.0   0.1-
    190703 568  0.1-  0.1+    200624 568  0.0   0.0     210708 568  0.2+  0.1+
    
    
    M. P. C. Staff               (C) Copyright 2023 MPC           M.P.E.C. 2023-J173
    


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