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  • MPEC 2023-Q25 : 2020 RZ5

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    M.P.E.C. 2023-Q25                               Issued 2023 August 19, 14:08 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 RZ5                                 
    
    
                               Revision to MPEC 2020-R165                           
    
    Additional Observations:
         K20R05Z  C2023 07 24.49702521 34 10.857-02 16 57.90         22.80GVEQ025F51
         K20R05Z  C2023 07 24.52093321 34 09.711-02 17 12.96         23.48GVEQ025F51
         K20R05Z  C2023 07 24.53292221 34 09.182-02 17 19.88         23.68GVEQ025F51
         K20R05Z  C2023 07 29.49729721 30 09.097-03 13 47.28         23.11GVEQ025F51
         K20R05Z  C2023 07 29.51480921 30 08.119-03 14 00.77         22.91GVEQ025F51
         K20R05Z  C2023 07 29.52343721 30 07.639-03 14 07.00         22.39GVEQ025F51
         K20R05Z 0C2023 08 09.36823321 19 07.280-05 53 42.59         22.48GVEQ025T12
         K20R05Z 0C2023 08 09.37236321 19 06.984-05 53 46.80         22.58GVEQ025T12
         K20R05Z 0C2023 08 09.37667321 19 06.679-05 53 51.26         22.61GVEQ025T12
         K20R05Z 0C2023 08 10.44851721 17 52.808-06 12 10.54         22.52GVEQ025T12
         K20R05Z 0C2023 08 10.45820021 17 52.101-06 12 20.46         22.32GVEQ025T12
         K20R05Z KC2023 08 17.19540221 09 48.26 -08 16 27.3          22.0 VuEQ025H21
         K20R05Z KC2023 08 17.20111221 09 47.78 -08 16 33.3          22.3 VuEQ025H21
    
    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.  1.8-m Ritchey-Chretien +
        CCD.
    H21 Astronomical Research Observatory, Westfield.  Observer R. Holmes.
        Measurers T. Linder, R. Holmes, L. Horn.  1.3-m f/4.0 astrograph + CCD.
    T12 University of Hawaii 88-inch telescope, Maunakea.  Observers D. Hung, D.
        J. Tholen.  Measurer D. J. Tholen.  2.24-m f/10.1 reflector + 2112 x 2112
        pixels STA1600 10k CCD.
    
    First and last observations above in comparison with prediction:
    Residuals in seconds of arc, reference and Delta-T
    230724 F51  7.8+  0.5+    230817 H21  8.8+  0.0+    MPO750185   +0.05 days
    
    Orbital elements:
    2020 RZ5                                                 Earth MOID = 0.3810 AU
    Epoch 2023 Sept. 13.0 TT = JDT 2460200.5                Veres                   
    M 316.52182              (2000.0)            P               Q                  
    n   0.30884192     Peri.  275.20263     +0.37410707     -0.91253208             
    a   2.1675971      Node   151.02714     +0.92685390     +0.36186921             
    e   0.4640362      Incl.   19.95497     +0.03139661     +0.19061969             
    P   3.19           H   20.77          G   0.15           U   1                  
    Residuals in seconds of arc
    200817 F52  0.1-  0.6+    201109 807  0.2+  0.0     210207 807  0.2+  0.0
    200817 F52  0.3-  0.0     201109 807  0.2+  0.1-    210207 807  0.3+  0.2-
    200821 F51  0.1-  0.1+    201109 807  0.4-  0.3-    210207 807  0.2+  0.1-
    200821 F51  0.1-  0.4+    201112 474  0.2+  0.0     210207 I52  0.1-  0.3-
    200821 F51  0.2+  0.0     201112 474  0.1+  0.0     210207 I52  0.1+  0.1+
    200912 F51  0.1+  0.0     201112 474  0.1+  0.1-    210207 I52  0.4-  0.1+
    200912 F51  0.0   0.2+    201112 474  0.1+  0.1-    210303 H21  1.1-  0.5+
    200912 F51  0.3+  0.1+    201207 807  0.3-  0.2-    210303 H21  0.9-  0.8+
    200913 568  0.0   0.0     201207 807  0.1-  0.3-    210303 H21  1.1-  0.5+
    200913 568  0.0   0.0     201207 807  0.3+  0.6+    210304 H21  0.2-  0.8+
    200913 568  0.0   0.0     201209 807  0.2+  0.1+    210304 H21  0.5-  0.6+
    200914 F51  0.1-  0.1+    201209 807  0.2+  0.4-    210306 H21  0.1-  0.2+
    200914 F51  0.1-  0.1+    201209 807  0.3+  0.2-    210306 H21  0.1-  0.5-
    200914 F51  0.1+  0.1-    201220 807  0.2+  0.1-    230724 F51  0.1+  0.2+
    200914 F51  0.0   0.0     201220 807  0.3+  0.1-    230724 F51  0.3-  0.1-
    200915 L01  0.2-  0.6-    201220 807  0.2+  0.2+    230724 F51  0.2+  0.4+
    200915 L01  0.5-  0.8-    210105 807  0.0   0.3+    230729 F51  0.1-  0.7+
    200915 F51  0.1-  0.1-    210105 807  0.6-  0.1-    230729 F51  0.1-  0.2+
    200915 F51  0.0   0.1-    210114 807  0.5+  0.1+    230729 F51  0.1-  0.4+
    200915 F51  0.2-  0.1+    210114 807  0.4+  0.4+    230809 T12  0.0   0.1+
    200915 F51  0.1+  0.1-    210114 807  0.0   0.3+    230809 T12  0.0   0.1+
    200926 F51  0.1+  0.0     210118 807  0.2+  0.3+    230809 T12  0.0   0.0
    200926 F51  0.2+  0.2+    210118 807  0.1+  0.1+    230810 T12  0.0   0.0
    201008 I52  0.7-  0.4-    210118 807  0.3-  0.7+    230810 T12  0.1-  0.1+
    201008 I52  1.1-  1.5-    210206 807  0.2-  0.1-    230817 H21  0.6+  0.7-
    201008 I52  0.8-  0.0     210206 807  0.1-  0.1-    230817 H21  0.0   0.1-
    201008 I52  0.7+  0.9-    210206 807  0.1+  0.2-
    
    Ephemeris:
    2020 RZ5                 a,e,i = 2.17, 0.46, 20                  q = 1.1618
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2023 07 20    21 37 09.6 -01 34 52   1.1808  2.1153   148.5    14.5    23.6
    ...
    2023 08 04    21 24 55.2 -04 28 36   1.0335  2.0306   165.0     7.4    22.9
    ...
    2023 08 12    21 16 04.4 -06 39 21   0.9768  1.9844   171.2     4.5    22.6
    ...
    2023 08 18    21 08 48.8 -08 32 02   0.9451  1.9493   169.4     5.5    22.5
    2023 08 19    21 07 34.8 -08 51 47   0.9408  1.9434   168.6     5.9    22.5
    2023 08 20    21 06 20.7 -09 11 46   0.9367  1.9375   167.6     6.4    22.6
    ...
    2023 08 26    20 59 00.0 -11 15 24   0.9177  1.9019   160.9    10.0    22.6
    ...
    2023 09 03    20 49 55.3 -14 04 35   0.9063  1.8539   150.9    15.4    22.7
    ...
    2023 09 18    20 37 56.3 -19 04 32   0.9211  1.7629   132.4    24.9    23.0
    
    A. U. Tomatic                (C) Copyright 2023 MPC           M.P.E.C. 2023-Q25
    


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