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  • MPEC 2023-O87 : 2020 RC5

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    M.P.E.C. 2023-O87                                 Issued 2023 July 26, 19:55 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
    
                                    2020 RC5                                 
    
    
                               Revision to MPEC 2020-R154                           
    
    Additional Observations:
         K20R05C  C2017 09 26.49524802 26 04.003+06 58 24.72         22.58GVEO087F51
         K20R05C  C2017 09 26.50897902 26 02.997+06 58 23.70         23.15GVEO087F51
         K20R05C  C2017 09 26.52255202 26 01.999+06 58 22.14         23.26GVEO087F51
         K20R05C  C2017 09 26.53619202 26 01.016+06 58 21.35         22.38GVEO087F51
         K20R05C  C2017 09 28.53548202 23 41.161+06 55 27.00         23.09GVEO087F51
         K20R05C  C2017 09 28.54753102 23 40.227+06 55 25.71         22.59GVEO087F51
         K20R05C  C2017 09 28.55958202 23 39.308+06 55 24.38         22.85GVEO087F51
         K20R05C  C2017 09 29.56207002 22 25.864+06 53 49.42         22.89GVEO087F51
         K20R05C  C2017 09 29.57430302 22 24.908+06 53 48.36         22.59GVEO087F51
         K20R05C  C2017 09 29.58663102 22 23.935+06 53 46.68         22.56GVEO087F51
         K20R05C  C2017 09 29.59890802 22 22.985+06 53 45.52         23.68GVEO087F51
         K20R05C KC2017 10 19.40506901 54 19.868+06 17 00.82         22.76GVEO087F51
         K20R05C  C2020 08 18.51129701 52 56.500-01 23 12.55         23.04GVEO087F51
         K20R05C  C2020 08 18.52463701 52 56.820-01 23 10.13         22.97GVEO087F51
         K20R05C  C2020 08 18.53736801 52 57.118-01 23 07.10         22.77GVEO087F51
         K20R05C  C2020 08 18.54893701 52 57.382-01 23 04.56         22.24GVEO087F51
         K20R05C KC2020 08 23.56794601 54 37.661-01 08 09.20         21.69GVEO087F52
         K20R05C  C2020 09 16.50066001 42 31.013-00 54 15.21         22.91GVEO087F52
         K20R05C  C2020 09 16.51166401 42 30.205-00 54 15.53         22.21GVEO087F52
         K20R05C  C2020 09 16.52266601 42 29.405-00 54 15.90         22.15GVEO087F52
         K20R05C  C2020 09 16.53371601 42 28.583-00 54 16.39         22.38GVEO087F52
         K20R05C  C2023 05 16.56940720 18 39.814-25 16 28.98         23.38GVEO087F51
         K20R05C  C2023 05 16.58265820 18 42.906-25 16 29.52         22.04GVEO087F51
         K20R05C  C2023 07 26.59650100 23 28.074-17 50 07.58         21.81wXEO087F51
         K20R05C  C2023 07 26.60166200 23 28.524-17 50 05.79         21.97wXEO087F51
         K20R05C  C2023 07 26.60680100 23 28.952-17 50 03.90         21.92wXEO087F51
         K20R05C  C2023 07 26.61194900 23 29.405-17 50 02.19         22.20wXEO087F51
    
    Observer details:
    F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, K. Chambers, T. Lowe, P.
        Minguez, A. Schultz, I. Smith.  Measurers S. Chastel, J. Fairlamb, M.
        Huber, Y. Ramanjooloo, R. Wainscoat, R. Weryk, K. Chambers, T. de Boer, J.
        Bulger, H. Gao, C.-C. Lin, T. Lowe, E. Magnier, P. Minguez, A. Schultz, I.
        Smith.  1.8-m Ritchey-Chretien + CCD.
    F52 Pan-STARRS 2, Haleakala.  Observers J. Bulger, K. Chambers, T. Dukes, T.
        Lowe, P. Minguez, A. Schultz, I. Smith.  Measurers S. Chastel, J.
        Fairlamb, M. Huber, Y. Ramanjooloo, R. Wainscoat, R. Weryk.  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
    170926 F51 0.11- 0.06-    230726 F51 0.20- 0.19-    MPO750185   +0.11 days
    
    Orbital elements:
    2020 RC5                                                 Earth MOID = 0.2237 AU
    Epoch 2023 Sept. 13.0 TT = JDT 2460200.5                Veres                   
    M  23.35830              (2000.0)            P               Q                  
    n   0.32432109     Peri.  243.75189     +0.42921718     +0.90033283             
    a   2.0980665      Node    51.85367     -0.79261749     +0.41365120             
    e   0.4177789      Incl.    5.24753     -0.43304749     +0.13525338             
    P   3.04           H   21.89          G   0.15           U   1                  
    Residuals in seconds of arc
    170926 F51  0.1+  0.1+    200910 G96  0.4+  0.4+    200925 V06  0.2+  0.0
    170926 F51  0.1-  0.1+    200910 G96  0.1+  0.3+    200925 V06  0.1+  0.1+
    170926 F51  0.3-  0.3-    200910 G96  0.3+  0.8+    200925 V06  0.3+  0.2-
    170926 F51  0.1-  0.0     200913 F51  0.1+  0.1+    200925 V06  0.2+  0.2-
    170928 F51  0.0   0.2+    200913 F51  0.1-  0.2-    201010 V06  0.3-  0.1-
    170928 F51  0.0   0.0     200913 F51  0.0   0.1-    201010 V06  0.1-  0.1+
    170928 F51  0.1+  0.2-    200914 H21  0.7-  0.1-    201010 V06  0.1-  0.2+
    170929 F51  0.2-  0.1-    200914 H21  0.3-  0.1+    201010 V06  0.0   0.2+
    170929 F51  0.1-  0.0     200914 H21  0.4-  0.3+    201011 H21  0.5-  0.5+
    170929 F51  0.1-  0.4-    200914 F51  0.1+  0.2-    201011 H21  0.2-  0.1+
    170929 F51  0.1+  0.3-    200914 F51  0.0   0.0     201011 H21  0.2+  0.4+
    171019 F51  0.3+  0.3+    200914 F51  0.0   0.1-    230516 F51  0.0   0.3+
    200818 F51  0.0   0.0     200914 F51  0.0   0.0     230516 F51  0.0   0.1+
    200818 F51  0.1+  0.4-    200916 F52  0.2+  0.2-    230726 F51  0.0   0.1+
    200818 F51  0.1+  0.1-    200916 F52  0.1+  0.1-    230726 F51  0.1+  0.0
    200818 F51  0.0   0.0     200916 F52  0.2+  0.1-    230726 F51  0.2-  0.1-
    200823 F52  0.1-  0.3+    200916 F52  0.0   0.1-    230726 F51  0.1-  0.4-
    
    Ephemeris:
    2020 RC5                 a,e,i = 2.10, 0.42, 5                   q = 1.2215
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2023 06 26    23 01 59.8 -22 00 59   0.3761  1.2235   114.9    48.9    22.0
    ...
    2023 07 11    23 49 33.1 -19 47 45   0.3600  1.2242   117.3    47.6    21.9
    ...
    2023 07 19    00 09 06.7 -18 42 52   0.3559  1.2321   119.7    45.8    21.8
    ...
    2023 07 25    00 20 47.9 -18 00 15   0.3544  1.2413   122.2    43.8    21.8
    2023 07 26    00 22 29.4 -17 53 42   0.3543  1.2431   122.6    43.5    21.8
    2023 07 27    00 24 06.6 -17 47 19   0.3542  1.2450   123.1    43.1    21.8
    ...
    2023 08 02    00 32 16.5 -17 12 25   0.3544  1.2579   126.4    40.5    21.7
    ...
    2023 08 10    00 38 59.8 -16 34 45   0.3567  1.2789   131.6    36.3    21.7
    ...
    2023 08 25    00 39 10.5 -15 42 37   0.3703  1.3291   144.2    26.4    21.5
    
    A. U. Tomatic                (C) Copyright 2023 MPC           M.P.E.C. 2023-O87
    


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