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  • MPEC 2023-S84 : 2019 UC4

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    M.P.E.C. 2023-S84                            Issued 2023 September 19, 14:10 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
    
                                    2019 UC4                                 
    
    
                               Revision to MPEC 2019-U122                           
    
    Additional Observations:
         K19U04C  C2020 04 28.31586511 25 20.548-10 51 12.21         23.01GVES084F51
         K19U04C  C2020 04 28.32795211 25 21.007-10 51 04.02         22.98GVES084F51
         K19U04C  C2020 04 28.34015011 25 21.481-10 50 56.79         22.70GVES084F51
         K19U04C  C2020 05 11.28410711 36 05.009-09 09 33.30         23.69GVES084F51
         K19U04C  C2020 05 11.29464811 36 05.582-09 09 30.31         23.68GVES084F51
         K19U04C  C2020 05 11.30494411 36 06.094-09 09 26.91         23.56GVES084F51
         K19U04C  C2023 08 24.49869601 36 16.663+27 07 30.73         22.28GVES084F52
         K19U04C  C2023 09 10.47264202 17 14.794+33 39 21.81         22.79GVES084F52
         K19U04C  C2023 09 10.48545702 17 17.049+33 39 41.80         21.67GVES084F52
         K19U04C  C2023 09 10.49824002 17 19.242+33 40 02.19         21.41GVES084F52
         K19U04C 0C2023 09 13.56766402 26 58.170+35 00 22.90         22.28GVES084T12
         K19U04C 0C2023 09 15.55902102 33 48.426+35 54 07.66         22.09GVES084T12
         K19U04C 0C2023 09 15.56005302 33 48.638+35 54 09.34         22.10GVES084T12
    
    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.
    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.
    T12 University of Hawaii 88-inch telescope, Maunakea.  Observer D. Hung.
        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
    200428 F51  0.9+  0.2+    230915 T12  2.5+  0.4+    MPO545150   +0.06 days
    
    Orbital elements:
    2019 UC4                                            PHA, Earth MOID = 0.0449 AU
    Epoch 2023 Sept. 13.0 TT = JDT 2460200.5                Veres                   
    M 340.31186              (2000.0)            P               Q                  
    n   0.25152167     Peri.  203.66640     -0.05309022     -0.98869452             
    a   2.4855306      Node   249.61985     +0.93841624     -0.00138622             
    e   0.6451072      Incl.    8.60344     +0.34140357     -0.14993740             
    P   3.92           H   21.22          G   0.15           U   0                  
    Residuals in seconds of arc
    190826 F52  0.3+  0.4+    191023 568  0.0   0.0     200225 474  0.0   0.0
    190826 F52  0.4+  0.0     191023 568  0.0   0.0     200225 474  0.0   0.0
    190826 F52  0.0   0.0     191023 568  0.0   0.0     200229 807  0.2+  0.0
    190826 F52  0.2-  0.1+    191027 F51  0.0   0.0     200229 807  0.1+  0.2+
    190917 F51  0.1-  0.1-    191027 F51  0.1-  0.1-    200229 807  0.1+  0.1+
    190917 F51  0.1-  0.1-    191027 F51  0.0   0.0     200229 474  0.1+  0.0
    190917 F51  0.4+  0.2-    191111 807  0.0   0.3+    200229 474  0.0   0.0
    190917 F51  0.3-  0.2-    191111 807  0.0   0.2+    200229 474  0.0   0.1+
    191001 F51  0.2-  0.2+    191111 807  0.0   0.2-    200428 F51  0.3+  0.0
    191001 F51  0.1+  0.2-    191114 F52  0.2+  0.3+    200428 F51  0.0   0.6+
    191001 F51  0.1+  0.0     191118 I52  0.6-  0.8-    200428 F51  0.1-  0.2+
    191022 F51  0.0   0.1+    191118 I52  0.9+  0.3+    200511 F51  0.2-  0.3+
    191022 F51  0.0   0.0     191118 I52  0.3+  0.1+    200511 F51  0.2+  0.2-
    191022 F51  0.2+  0.0     191118 I52  0.4+  0.4+    200511 F51  0.2-  0.2-
    191022 L01  0.4+  0.4+    200222 807  0.5+  0.0     230824 F52  0.0   0.0
    191022 L01  0.3-  0.0     200222 807  0.3-  0.2+    230910 F52  0.3-  0.0
    191022 L01  0.4-  0.0     200225 807  0.0   0.1+    230910 F52  0.2+  0.0
    191022 L01  0.1-  0.1+    200225 807  0.1-  0.1-    230910 F52  0.1-  0.4+
    191023 H21  0.1-  0.0     200225 807  0.2-  0.1+    230913 T12  0.2+  0.0
    191023 H21  0.0   0.0     200225 474  0.0   0.1-    230915 T12  0.1+  0.0
    191023 H21  0.1+  0.4-    200225 474  0.2-  0.1+    230915 T12  0.1+  0.1-
    
    Ephemeris:
    2019 UC4                 a,e,i = 2.49, 0.65, 9                   q = 0.8821
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2023 08 20    01 27 33.6 +25 36 14   0.8800  1.6023   115.6    34.7    23.4
    ...
    2023 09 04    01 59 36.7 +30 59 55   0.6674  1.4647   120.5    36.4    22.7
    ...
    2023 09 12    02 21 54.8 +34 18 53   0.5652  1.3910   121.9    37.9    22.2
    ...
    2023 09 18    02 42 54.8 +37 01 33   0.4944  1.3360   122.3    39.5    21.9
    2023 09 19    02 46 54.4 +37 29 42   0.4831  1.3269   122.2    39.8    21.8
    2023 09 20    02 51 04.3 +37 58 06   0.4720  1.3178   122.2    40.2    21.8
    ...
    2023 09 26    03 20 22.6 +40 51 45   0.4087  1.2636   121.1    42.8    21.4
    ...
    2023 10 04    04 15 50.7 +44 28 25   0.3351  1.1929   117.5    48.1    21.0
    ...
    2023 10 19    07 10 01.0 +43 18 23   0.2449  1.0694   100.7    66.3    20.6
    
    A. U. Tomatic                (C) Copyright 2023 MPC           M.P.E.C. 2023-S84
    


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