• MPC Preparation (Info)

    • MPEC 2017-L09 : S/2003 J 18

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    M.P.E.C. 2017-L09                                Issued 2017 June 2, 16:04 UT

     The Minor Planet Electronic Circulars contain information on unusual
         minor planets and routine data on comets.  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/2003 J 18

                           Revision to MPEC 2009-S76

Additional Observations:
    SK03J180  C2017 03 24.30403 13 17 20.41 -07 13 31.1          23.3 rcEL009304
    SK03J180  C2017 03 24.31037 13 17 20.23 -07 13 30.9          23.3 rcEL009304
    SK03J180  C2017 04 23.19250 13 04 13.42 -06 06 42.9          23.2 rcEL009304
    SK03J180  C2017 04 23.31349 13 04 10.30 -06 06 26.7          23.2 rcEL009304

Observer details:
304 Las Campanas Observatory.  Observer S. S. Sheppard.  6.5-m Magellan-Baade
    telescope + CCD.

Orbital elements:
S/2003 J 18
Epoch 2017 Sept. 4.0 TT = JDT 2458000.5                 MPC
M 220.71323              (2000.0)            P               Q
n   0.61289521     Peri.   98.15071     -0.36321961     +0.87445910
a   0.1351600      Node   215.49862     +0.47318828     +0.47043122
e   0.1047832      Incl.  146.37604     +0.80259851     +0.11838815
P   1.61           H   16.5           P/d   587.38
From 24 observations 2003 Feb. 6-2017 Apr. 23, mean residual 0".34.

Residuals in seconds of arc
030206 568  0.2-  0.3+    030227 568  0.4+  0.1-    030327 568  0.3+  0.1+
030206 568  0.3-  0.3+    030227 568  0.0   0.2+    030425 568  0.5-  0.6+
030206 568  0.1-  0.3+    030227 568  0.2+  0.1-    030425 568  0.4-  0.4+
030224 568  0.1+  0.3-    030325 568  0.4+  0.2-    030425 568  0.2-  0.8+
030224 568  0.1+  0.2-    030325 568  0.4+  0.2-    170324 304  0.1+  0.1+
030224 568  0.1+  0.2-    030325 568  0.6+  0.4-    170324 304  0.2-  0.5-
030224 568  0.4-  0.5-    030327 568  0.0   0.1-    170423 304  0.3+  0.2+
030224 568  0.5-  0.6-    030327 568  0.4+  0.3-    170423 304  0.1+  0.5+

Gareth V. Williams           (C) Copyright 2017 MPC           M.P.E.C. 2017-L09

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