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  • MPEC 2018-R171: 2018 RK6

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    M.P.E.C. 2018-R171                               Issued 2018 Sept. 14, 20:43 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
    
                                       2018 RK6
    
    Observations:
         K18R06K* C2018 09 13.19836 22 45 53.95 -02 19 01.2          19.3 GUER171G96
         K18R06K  C2018 09 13.20364 22 45 59.02 -02 18 57.0          19.5 GUER171G96
         K18R06K  C2018 09 13.20893 22 46 04.06 -02 18 53.0          19.5 GUER171G96
         K18R06K  C2018 09 13.21420 22 46 09.12 -02 18 49.0          19.6 GUER171G96
         K18R06K  C2018 09 13.34505 22 48 16.50 -02 16 59.1          19.4 GUER171I52
         K18R06K  C2018 09 13.34535 22 48 16.82 -02 16 59.2                UER171I52
         K18R06K  C2018 09 13.34595 22 48 17.46 -02 16 58.3          19.1 GUER171I52
         K18R06K KC2018 09 13.88981 23 00 53.06 -02 10 22.2          19.5 GVER171J95
         K18R06K KC2018 09 13.89213 23 00 56.23 -02 10 19.8          19.2 GVER171J95
         K18R06K KC2018 09 13.89538 23 01 00.72 -02 10 16.3          19.3 GVER171J95
         K18R06K  C2018 09 14.13850 23 07 47.17 -02 02 47.3          19.0 GVER171I52
         K18R06K  C2018 09 14.13869 23 07 47.46 -02 02 47.2          19.0 GVER171I52
         K18R06K  C2018 09 14.13887 23 07 47.75 -02 02 46.8          19.1 GVER171I52
         K18R06K  C2018 09 14.13906 23 07 48.01 -02 02 46.6          18.6 GVER171I52
         K18R06K KC2018 09 14.47147423 17 40.69 -01 40 26.5          18.9 GVER171474
         K18R06K KC2018 09 14.47213023 17 41.84 -01 40 25.5          19.4 GVER171474
         K18R06K KC2018 09 14.47278623 17 43.04 -01 40 24.2          18.9 GVER171474
         K18R06K KC2018 09 14.47344223 17 44.23 -01 40 23.1          18.9 GVER171474
         K18R06K KC2018 09 14.47377023 17 44.82 -01 40 22.1          19.2 GVER171474
    
    Observer details:
    474 Mount John Observatory, Lake Tekapo.  Observers A. C. Gilmore,
        P. M. Kilmartin.  Measurer P. M. Kilmartin.  1.0-m f/7.7 reflector + CCD.
    G96 Mt. Lemmon Survey.  Observer G. J. Leonard.  Measurers B. M. Africano,
        E. J. Christensen, G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer,
        H. Groeller, J. A. Johnson, R. A. Kowalski, S. M. Larson, G. J. Leonard,
        R. L. Seaman, F. C. Shelly.  1.5-m reflector + 10K CCD.
    I52 Steward Observatory, Mt. Lemmon Station.  Observers E. J. Christensen,
        H. Groeller.  Measurers B. M. Africano, E. J. Christensen, G. A. Farneth,
        D. C. Fuls, A. R. Gibbs, A. D. Grauer, H. Groeller, J. A. Johnson,
        R. A. Kowalski, S. M. Larson, G. J. Leonard, R. L. Seaman, F. C. Shelly.
        1.0-m reflector + CCD.
    J95 Great Shefford.  Observer P. Birtwhistle.  0.41-m f/6.3 Schmidt-Cassegrain
        + CCD.
    
    Orbital elements:
    2018 RK6                                                 Earth MOID = 0.0025 AU
    Epoch 2018 Mar. 23.0 TT = JDT 2458200.5                 MPC
    M 233.21786              (2000.0)            P               Q
    n   0.59639032     Peri.  222.34419     +0.82399718     -0.56656783
    a   1.3978127      Node   172.16147     +0.52993555     +0.76725448
    e   0.3189933      Incl.    2.28438     +0.20049181     +0.30053530
    P   1.65           H   28.2           G   0.15           U   6
    Residuals in seconds of arc
    180913 G96  0.2+  0.3-    180913 J95  0.3+  0.1+    180914 474  0.2+  0.0
    180913 G96  0.3+  0.1-    180913 J95  0.2-  0.1+    180914 474  0.3-  0.2-
    180913 G96  0.1-  0.1-    180913 J95  0.3-  0.1+    180914 474  0.1-  0.1-
    180913 G96  0.1+  0.1-    180914 I52  0.5+  0.2-    180914 474  0.0   0.2-
    180913 I52  0.4-  0.1+    180914 I52  0.4+  0.3-    180914 474  0.0   0.3+
    180913 I52  0.2-  0.3-    180914 I52  0.5+  0.1-
    180913 I52  0.3+  0.1+    180914 I52  0.1-  0.2-
    
    Ephemeris:
    2018 RK6                 a,e,i = 1.40, 0.32, 2                   q = 0.9519
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2018 08 15    21 37 22.9 -03 48 40   0.1332  1.1442   169.6     9.2    24.7
    ...
    2018 08 30    21 42 20.3 -03 07 46   0.06947 1.0774   166.2    12.9    23.3
    ...
    2018 09 07    21 56 10.0 -02 50 37   0.03896 1.0453   163.4    16.0    22.1
    ...
    2018 09 13    22 42 05.6 -02 16 49   0.01739 1.0234   169.7    10.2    20.1
    2018 09 14    23 03 28.4 -01 59 58   0.01403 1.0200   174.0     5.9    19.4
    2018 09 15    23 37 48.4 -01 30 48   0.01086 1.0166   177.4     2.6    18.7
    ...
    2018 09 21    07 39 07.6 +03 41 27   0.01438 0.9977    63.1   116.1    23.5
    ...
    2018 09 29    08 50 31.4 +03 23 41   0.04261 0.9767    52.7   125.3    26.6
    ...
    2018 10 14    09 19 11.6 +02 57 00   0.09712 0.9525    59.8   115.1    27.5
    
    A. U. Tomatic                (C) Copyright 2018 MPC           M.P.E.C. 2018-R171
    

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