• MPC Preparation (Info)

  • MPEC 2020-Q165 : 2018 RW7

    The following Minor Planet Electronic Circular may be linked-to from your own Web pages, but must not otherwise be redistributed electronically.

    A form allowing access to any MPEC is at the bottom of this page.


    Read MPEC 2020-Q164 Read MPEC 2020-Q166


    M.P.E.C. 2020-Q165                              Issued 2020 August 23, 21:06 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 RW7                                 
    
    
                               Revision to MPEC 2018-S10                            
    
    Additional Observations:
         K18R07W  C2013 05 12.43851515 22 34.072-00 35 10.82         23.77GVEQ165F51
         K18R07W  C2013 05 12.45177315 22 32.768-00 35 06.17         23.50GVEQ165F51
         K18R07W  C2013 05 12.46501615 22 31.453-00 35 01.47         23.26GVEQ165F51
         K18R07W  C2013 05 12.47824915 22 30.122-00 34 56.42         23.22GVEQ165F51
         K18R07W  C2014 08 31.55296103 59 15.269+13 12 13.94         23.06GVEQ165F51
         K18R07W  C2014 09 04.57242204 19 16.474+12 58 15.67         22.73GVEQ165F51
         K18R07W  C2014 09 04.58357904 19 19.892+12 58 12.05         22.58GVEQ165F51
         K18R07W  C2015 03 28.53598115 40 10.820-05 46 23.45         20.75GVEQ165F51
         K18R07W  C2015 03 28.54884615 40 10.102-05 46 12.22         23.20GVEQ165F51
         K18R07W  C2015 03 28.56267715 40 09.323-05 45 59.57         23.17GVEQ165F51
         K18R07W  C2015 03 28.57549115 40 08.590-05 45 48.07         22.59GVEQ165F51
         K18R07W  C2015 03 29.54151015 39 17.397-05 31 20.69         21.88GVEQ165F51
         K18R07W  C2015 03 29.55411715 39 16.627-05 31 09.13         22.50GVEQ165F51
         K18R07W  C2015 03 29.57938215 39 15.150-05 30 46.74         22.67GVEQ165F51
         K18R07W  C2015 04 23.50301515 03 53.026+00 22 26.99         22.69GVEQ165F51
         K18R07W  C2015 04 23.53143915 03 49.976+00 22 46.49         22.23GVEQ165F51
         K18R07W  C2015 04 24.53712815 02 06.445+00 34 14.91         22.95GVEQ165F51
         K18R07W  C2015 05 18.42711714 26 06.895+03 07 29.36         22.76GVEQ165F51
         K18R07W  C2015 05 18.45176214 26 05.087+03 07 31.38         22.91GVEQ165F51
         K18R07W KC2016 08 02.58531000 58 24.763+07 45 01.20         22.88GVEQ165F51
         K18R07W  C2016 09 30.53260303 50 31.107-03 54 18.86         19.90GVEQ165F51
         K18R07W  C2016 10 06.56152704 28 17.273-08 51 19.67         19.41GVEQ165F51
         K18R07W  C2016 10 06.57402804 28 22.297-08 52 00.49         19.48GVEQ165F51
         K18R07W  C2016 10 14.60963405 32 28.444-16 42 19.86         20.23GVEQ165F51
         K18R07W  C2016 10 14.61750105 32 32.543-16 42 48.24         20.40GVEQ165F51
         K18R07W  C2016 10 14.62534105 32 36.624-16 43 16.58         20.31GVEQ165F51
         K18R07W  C2016 10 14.63319205 32 40.710-16 43 44.88         20.52GVEQ165F51
         K18R07W  C2016 10 28.63860107 52 11.874-27 49 53.11         20.93GVEQ165F51
         K18R07W  C2017 01 29.59823614 35 35.708-17 25 56.91         22.25GVEQ165F51
         K18R07W  C2017 01 29.61120914 35 36.992-17 25 48.95         22.45GVEQ165F51
         K18R07W  C2017 01 29.62219914 35 38.097-17 25 41.56         22.77GVEQ165F51
         K18R07W  C2017 02 24.61888715 03 05.061-11 26 25.31         22.05GVEQ165F51
         K18R07W  C2017 03 26.61769614 43 14.183-01 20 50.36         22.20GVEQ165F51
         K18R07W  C2017 03 26.63022714 43 12.950-01 20 34.38         21.93GVEQ165F51
         K18R07W  C2017 03 31.47538514 35 28.072+00 19 10.56         22.36GVEQ165F51
         K18R07W  C2018 08 13.52344223 53 54.716+02 45 31.43         22.37GVEQ165F51
         K18R07W  C2018 08 13.53553123 53 54.826+02 45 26.86         22.80GVEQ165F51
         K18R07W  C2018 08 13.54756523 53 54.939+02 45 22.22         23.06GVEQ165F51
         K18R07W  C2018 08 13.55958723 53 55.033+02 45 17.56         22.28GVEQ165F51
         K18R07W  C2018 09 08.71505 23 46 41.48 -03 49 59.2          20.9 RqEQ165D29
         K18R07W  C2018 09 08.72919 23 46 40.70 -03 50 21.0          20.4 RqEQ165D29
         K18R07W  C2018 09 08.74333 23 46 39.92 -03 50 43.0          21.0 RqEQ165D29
         K18R07W  C2019 03 05.39659 13 29 02.21 -03 28 00.3          20.0 GVEQ165703
         K18R07W  C2019 03 05.40187 13 29 01.58 -03 27 46.1          20.0 GVEQ165703
         K18R07W  C2019 03 05.41244 13 29 00.27 -03 27 15.6          19.8 GVEQ165703
         K18R07W  C2019 04 03.37268212 41 27.437+11 07 48.20         20.98GVEQ165F51
         K18R07W  C2019 04 03.38533012 41 26.412+11 07 58.90         20.72GVEQ165F51
         K18R07W  C2020 08 13.41064822 37 18.194-02 20 19.83         23.52GVEQ165F51
         K18R07W  C2020 08 13.42240222 37 17.397-02 20 28.11         23.23GVEQ165F51
         K18R07W  C2020 08 13.43413022 37 16.649-02 20 36.51         22.79GVEQ165F51
         K18R07W  C2020 08 13.44587222 37 15.879-02 20 45.28         22.21GVEQ165F51
         K18R07W  C2020 08 19.42583022 30 19.630-03 40 43.84         22.09GVEQ165F51
         K18R07W  C2020 08 19.43779122 30 18.645-03 40 54.54         22.46GVEQ165F51
         K18R07W  C2020 08 19.44969822 30 17.690-03 41 05.24         21.28GVEQ165F51
         K18R07W  C2020 08 19.46168622 30 16.677-03 41 16.05         22.15GVEQ165F51
         K18R07W  C2020 08 21.44352922 27 38.839-04 11 48.76         21.71GVEQ165F51
         K18R07W  C2020 08 21.51905622 27 32.253-04 13 01.54         22.27GVEQ165F51
         K18R07W  C2020 08 22.35531322 26 23.558-04 26 31.74         22.65GVEQ165F51
         K18R07W  C2020 08 22.36711122 26 22.512-04 26 43.23         21.70GVEQ165F51
         K18R07W  C2020 08 22.37891922 26 21.463-04 26 54.91         22.36GVEQ165F51
         K18R07W  C2020 08 22.39072922 26 20.426-04 27 06.52         21.92GVEQ165F51
         K18R07W  C2020 08 23.43022822 24 51.592-04 44 23.03         22.46wUEQ165F51
         K18R07W  C2020 08 23.44433622 24 50.294-04 44 37.23         22.44wUEQ165F51
         K18R07W  C2020 08 23.45879622 24 48.961-04 44 51.96         22.16wUEQ165F51
         K18R07W  C2020 08 23.47332222 24 47.644-04 45 06.56         22.24wUEQ165F51
    
    Observer details:
    703 Catalina Sky Survey.  Observer B. M. Africano.  Measurers B. M. Africano,
        E. J. Christensen, G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer,
        H. Groeller, R. A. Kowalski, S. M. Larson, G. J. Leonard, T. A. Pruyne, R.
        L. Seaman, F. C. Shelly.  0.68-m Schmidt + 10K CCD.
    D29 Purple Mountain Observatory, XuYi Station.  Observers H. B. Zhao, B. Li,
        G. Zhaori, R. Q. Hong, L. F. Hu.  Measurers H. B. Zhao, B. Li, H. Lu, G.
        Zhaori.  1.04-m f/1.8 Schmidt + CCD.
    F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, K. Chambers, T. Lowe, A.
        Schultz, M. Willman.  Measurers S. Chastel, M. Huber, Y. Ramanjooloo, R.
        Wainscoat, R. Weryk, K. Chambers, T. de Boer, L. Denneau, J. Fairlamb, H.
        Flewelling, C.-C. Lin, E. Magnier.  1.8-m Ritchey-Chretien + CCD.
    
    First and last observations above in comparison with prediction:
    Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
    130512 F51 0.07+ 0.02+    200823 F51 0.04+ 0.01+    MPO466963   -0.04 days
    
    Orbital elements:
    2018 RW7                                                 Earth MOID = 0.0634 AU
    Epoch 2020 May 31.0 TT = JDT 2459000.5                  Veres
    M 251.13708              (2000.0)            P               Q
    n   0.48042351     Peri.  287.74366     -0.04186786     -0.99819755
    a   1.6145564      Node   164.46615     +0.96670357     -0.05134544
    e   0.4441474      Incl.    9.23889     +0.25245057     +0.03106915
    P   2.05           H   21.6           G   0.15           U   0
    Residuals in seconds of arc
    130512 F51  0.0   0.1-    180915 734  0.0   0.3-    181202 807  0.2-  0.1+
    130512 F51  0.2+  0.1-    180915 H21  0.1-  0.2-    181202 807  0.5-  0.0
    130512 F51  0.1+  0.1-    180915 H21  0.1+  0.1-    181202 807  0.1+  0.5+
    130512 F51  0.2-  0.2+    180915 711  0.6+  0.3+    190211 807  0.2-  0.1+
    140831 F51  0.4+  0.0     180915 H21  0.1+  0.2-    190211 807  0.2-  0.3-
    140904 F51  0.3-  0.4+    180915 711  0.6+  0.2+    190211 807  0.0   0.1-
    140904 F51  0.2+  0.3-    180915 711  0.6+  0.0     190211 I52  0.2+  0.3+
    150328 F51  0.0   0.1+    180915 I52  0.1-  0.1-    190211 I52  0.8+  0.2-
    150328 F51  0.0   0.2-    180915 I52  0.5-  0.1+    190211 I52  0.5+  1.0-
    150328 F51  0.0   0.1+    180915 I52  0.4-  0.3+    190211 I52  0.3-  0.3-
    150328 F51  0.2-  0.1+    180915 I52  0.3-  0.1-    190212 I52  0.1-  0.6-
    150329 F51  0.0   0.0     180915 474  0.2+  0.4-    190212 I52  0.1-  0.1-
    150329 F51  0.3-  0.3+    180915 474  0.4+  0.0     190301 807  0.4-  0.1+
    150329 F51  0.1+  0.1-    180915 474  0.1+  0.5-    190301 807  0.2-  0.1+
    150423 F51  0.2+  0.1+    180915 L01  0.3-  0.5-    190301 807  0.2-  0.1+
    150423 F51  0.2+  0.2-    180915 L01  0.1-  0.3+    190305 703  0.8+  0.2+
    150424 F51  0.3-  0.0     180916 I52  0.0   0.2+    190305 703  0.5+  0.2-
    150518 F51  0.1-  0.2+    180916 I52  0.5-  0.3+    190305 703  0.8-  0.9+
    150518 F51  0.7-  0.0     180916 I52  1.0-  0.8-    190306 703  0.7+  0.3-
    160802 F51  0.8+  0.2-    180916 I52  0.2+  0.1+    190306 703  0.5-  0.0
    160930 F51  0.0   0.0     180916 H21  0.1-  0.1-    190306 703  0.7+  0.8-
    161006 F51  0.1+  0.0     180916 H21  0.0   0.1+    190306 703  0.1-  0.1+
    161006 F51  0.1+  0.0     180916 H21  0.3-  0.1-    190307 D29  0.1-  0.3+
    161014 F51  0.0   0.0     180916 033  0.6-  0.9-    190307 D29  0.5+  0.3-
    161014 F51  0.1+  0.0     180916 033  0.6-  0.3-    190307 D29  0.1+  0.2+
    161014 F51  0.1+  0.1-    180916 033  0.0   0.1-    190329 I52  0.1-  0.5+
    161014 F51  0.1+  0.1-    180916 033  0.0   0.3-    190329 I52  0.3+  0.3-
    161028 F51  0.1-  0.1-    180916 033  0.4-  0.0     190329 I52  0.4+  0.4-
    170129 F51  0.1-  0.5+    180920 H21  0.5-  0.3-    190329 I52  1.0+  0.0
    170129 F51  0.0   0.2+    180920 H21  0.6-  0.5-    190403 F51  0.1-  0.1+
    170129 F51  0.4+  0.5+    180920 H21  0.4-  0.4-    190403 F51  0.1-  0.1+
    170224 F51  0.1+  0.0     180921 I52 (1.6+  1.1-)   190404 G96  0.1+  0.2+
    170326 F51  0.2+  0.2-    180921 I52 (1.7+  0.2-)   190404 G96  0.2-  0.4-
    170326 F51  0.2-  0.1-    180921 I52  0.2+  0.4+    190404 G96  0.4+  0.6-
    170331 F51  0.0   0.4+    180921 I52  0.9-  0.2+    190404 G96  0.5+  0.4+
    180813 F51  0.1-  0.0     180922 807  0.2-  0.0     190411 G96  0.1-  0.5+
    180813 F51  0.0   0.0     180922 807  0.1-  0.1-    190411 G96  0.7-  0.2+
    180813 F51  0.0   0.0     180922 807  0.0   0.0     190411 G96  1.1-  0.5-
    180813 F51  0.1-  0.1-    180928 I52  0.3-  0.6+    200813 F51  0.2+  0.1-
    180908 D29  0.7-  0.0     180928 I52  0.1+  0.5-    200813 F51  0.1-  0.0
    180908 D29  0.0   0.0     180928 691  0.6-  0.4+    200813 F51  0.3+  0.1-
    180908 D29  0.6+  0.1-    180928 691  0.4-  0.6+    200813 F51  0.5+  0.5-
    180914 G96  0.3-  0.4+    180928 691  0.4-  0.2+    200819 F51  0.1+  0.0
    180914 G96  0.1+  0.7+    180929 H21  0.1+  0.6+    200819 F51  0.1+  0.0
    180914 G96  0.2-  0.2+    180929 H21  0.3-  0.5+    200819 F51  0.4+  0.0
    180914 I52  0.2+  0.1-    180929 H21  0.1-  0.6+    200819 F51  0.1+  0.1-
    180914 I52  0.3+  0.6+    181006 I52  0.1-  0.3+    200821 F51  0.1+  0.7+
    180914 I52  0.4-  0.2+    181006 I52  0.6+  1.1+    200821 F51  0.0   0.1+
    180914 I52  0.3-  0.5-    181006 I52  0.2-  0.4-    200822 F51  0.0   0.1+
    180914 474  0.5-  0.1-    181010 F52  0.0   0.1+    200822 F51  0.0   0.2+
    180914 474  0.1+  0.2+    181010 F52  0.0   0.0     200822 F51  0.0   0.1+
    180914 474  0.1+  0.1-    181010 F52  0.1-  0.1+    200822 F51  0.2+  0.2+
    180914 033  0.0   0.1+    181015 474  0.1+  0.1-    200823 F51  0.1+  0.0
    180914 033  0.2-  0.3-    181015 474  0.1-  0.1+    200823 F51  0.0   0.1+
    180914 033  0.1+  0.3-    181015 474  0.1+  0.0     200823 F51  0.1-  0.0
    180914 033  0.2+  0.0     181028 807  0.0   0.1+    200823 F51  0.1+  0.1+
    180915 734  0.3-  0.1-    181028 807  0.0   0.1+
    180915 734  0.2-  0.1-    181028 807  0.0   0.0
    
    Ephemeris:
    2018 RW7                 a,e,i = 1.61, 0.44, 9                   q = 0.8975
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2020 07 24    22 49 07.2 +00 02 09   0.9465  1.8270   137.2    22.2    23.9
    ...
    2020 08 08    22 42 11.9 -01 23 45   0.7813  1.7480   153.4    15.0    23.1
    ...
    2020 08 16    22 34 29.3 -02 52 34   0.7087  1.7035   163.2     9.9    22.7
    ...
    2020 08 22    22 26 52.9 -04 20 39   0.6628  1.6691   170.8     5.6    22.3
    2020 08 23    22 25 28.5 -04 37 04   0.6560  1.6633   172.0     4.9    22.2
    2020 08 24    22 24 02.0 -04 53 57   0.6493  1.6575   173.1     4.2    22.1
    ...
    2020 08 30    22 14 43.7 -06 44 26   0.6140  1.6220   174.7     3.3    21.9
    ...
    2020 09 07    22 01 09.6 -09 30 48   0.5795  1.5734   164.3    10.0    22.0
    ...
    2020 09 22    21 36 42.0 -14 57 54   0.5507  1.4788   142.4    24.5    22.3
    
    A. U. Tomatic                (C) Copyright 2020 MPC           M.P.E.C. 2020-Q165
    


    Read MPEC 2020-Q164 Read MPEC 2020-Q166


    MPEC number:

    Enter an MPEC number in one of the following forms:

    • 1997-B01 (the full form)
    • J97B01 (the packed version of the full form)
    • B01 (the abbreviated form)