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  • MPEC 2020-L55 : 2016 UN36

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    M.P.E.C. 2020-L55                                 Issued 2020 June 13, 15:00 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
    
                                    2016 UN36                                
    
    
                               Revision to MPEC 2016-U81                            
    
    Additional Observations:
         K16U36N  C2018 11 10.22193522 04 26.217-04 02 53.90         23.47GVEL055T12
         K16U36N  C2018 11 10.23370622 04 27.272-04 02 51.56         23.48GVEL055T12
         K16U36N  C2018 11 14.22561822 11 44.382-03 47 07.82         23.37GVEL055T12
         K16U36N  C2018 11 14.23246722 11 45.111-03 47 05.77         23.44GVEL055T12
    
    Observer details:
    T12 Mauna Kea-UH/Tholen NEO Follow-Up (2.24-m).  Observers D. Hung, D.
        Fohring.  Measurers D. Fohring, D. J. Tholen.  2.24-m f/10.1 reflector +
        CCD.
    
    First and last observations above in comparison with prediction:
    Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
    181110 T12 0.04+ 0.03+    181114 T12 0.04+ 0.03+    MPO438031   +0.09 days
    
    Orbital elements:
    2016 UN36                                                Earth MOID = 0.0541 AU
    Epoch 2020 May 31.0 TT = JDT 2459000.5                  Veres
    M 255.54738              (2000.0)            P               Q
    n   0.48340511     Peri.  168.20367     +0.30025496     -0.95281949
    a   1.6079106      Node   264.31118     +0.87147008     +0.29299690
    e   0.3542018      Incl.    2.56426     +0.38779744     +0.07929590
    P   2.04           H   24.2           G   0.15           U   0
    Residuals in seconds of arc
    161025 F51  0.2+  0.0     161108 691  0.3-  0.4+    161203 246  0.3-  0.4-
    161025 F51  0.1+  0.0     161108 204  0.3+  0.1+    161203 246  0.2+  0.0
    161025 F51  0.2+  0.1-    161108 204  0.5+  0.0     161203 246  0.4-  0.3-
    161026 I52  0.1+  0.1-    161108 204  0.3-  0.2-    161203 246 (0.5-  1.7+)
    161026 I52  0.5-  0.2-    161109 691  0.1+  0.3-    161204 G45  0.1-  0.3-
    161026 I52  0.3-  0.3-    161109 691  0.3-  0.1+    161204 G45  0.2-  0.1-
    161026 I52  0.1-  0.2-    161109 691  0.3-  0.4+    161204 G45  0.0   0.1+
    161026 691  0.3-  0.3+    161110 H21  0.2+  0.5-    161204 G45  0.1-  0.0
    161026 691  0.3-  0.5+    161110 H21  0.0   0.0     161204 G45  0.1-  0.0
    161026 691  0.5-  0.3+    161112 691  0.6-  0.3+    161204 G45  0.2-  0.1+
    161026 568  0.2+  0.0     161112 691  0.5-  0.2+    161205 246  0.1+  0.3-
    161026 568  0.2+  0.0     161112 691  0.3-  0.3+    161205 246  0.4+  0.4-
    161026 568  0.2+  0.0     161117 H21  0.1+  0.1-    161205 246  0.4+  0.1-
    161027 I52  0.2+  0.1+    161117 H21  0.3-  0.5-    161205 246  0.3-  0.1-
    161027 I52  0.2-  0.5-    161117 H21  0.2+  0.1+    161205 246  0.4-  0.1-
    161027 I52  0.0   0.5-    161118 I15  0.0   0.1+    161205 246  0.8-  0.3-
    161027 I52  0.3+  0.4-    161118 I15  0.3+  0.2+    161205 246  0.8-  0.1-
    161027 926  0.0   0.2+    161118 I15  0.0   0.7+    161205 246  0.1-  0.3+
    161027 926  0.2-  0.6+    161118 691  0.1-  0.3+    161206 I15  0.1+  0.2+
    161027 926  0.2-  0.0     161118 691  0.5-  0.2+    161206 I15  0.3-  0.3-
    161029 691  0.1-  0.3+    161118 691  0.1+  0.0     161206 I15  0.1-  0.2-
    161029 691  0.3-  0.2+    161119 G96  0.5-  0.6+    161206 G45  0.3-  0.3-
    161029 691  0.1-  0.2+    161119 G96  0.2-  0.3+    161206 G45  0.0   0.3+
    161030 691  0.4-  0.5+    161119 G96  0.2-  0.1+    161206 G45  0.3-  0.1+
    161030 691  0.3-  0.2+    161119 G96  0.1-  0.0     161206 G45  0.1-  0.1-
    161030 691  0.3-  0.2+    161119 691  0.2+  0.1-    161206 G45  0.1+  0.1-
    161031 I52  0.3-  0.3-    161119 691  0.1-  0.1+    161206 G96  0.1-  0.0
    161031 I52  0.4-  0.1-    161120 H21  0.1+  0.2-    161206 G96  0.2+  0.1-
    161031 I52  0.5-  0.2-    161120 H21  0.2-  0.1+    161206 G96  0.2-  0.1-
    161031 I52  0.2-  0.2+    161120 H21  0.0   0.2-    161206 G96  0.0   0.1-
    161102 H21  0.3+  0.1+    161121 246  0.8+  0.2-    161206 A13  1.2+  0.4-
    161102 H21  0.4-  0.3-    161121 246  0.1-  0.2+    161206 A13  0.1+  0.1-
    161102 H21  0.2+  0.4-    161121 246  0.2+  0.0     161206 A13  1.2+  0.2-
    161103 300 (1.5+  0.2-)   161121 246  0.6+  0.8+    161208 160  0.1+  0.2-
    161103 300  0.8+  0.2+    161121 246  0.5-  0.5+    161208 160  0.2+  0.2+
    161103 300  0.5+  0.0     161121 246  0.3+  0.0     161208 160  0.3-  0.2+
    161103 300  0.9+  0.2-    161122 926  0.3-  0.1+    161216 160  0.1-  0.1+
    161104 H21  0.1-  0.0     161122 926  0.1-  0.0     161216 160  0.3-  0.2+
    161104 H21  0.1-  0.8+    161125 691  0.2+  0.7-    161216 160  0.0   0.0
    161104 H21  0.1-  0.5-    161125 691  0.0   0.7-    161224 130  0.5+  0.1+
    161104 D29  1.0+  0.6+    161125 691  0.2+  0.4-    161224 130  0.2-  0.3+
    161104 D29  0.3+  0.2+    161129 T05  0.6+  0.5+    161227 G96  0.1+  0.0
    161104 D29  0.3-  0.3+    161129 T05  0.5-  1.1+    161227 G96  0.3-  0.1-
    161105 691  0.2+  0.3+    161129 T05  1.2-  0.7-    161227 G96  0.1-  0.2-
    161105 691  0.4-  0.4+    161129 T05  0.9+  1.3-    161227 G96  0.1+  0.9-
    161105 691  0.1-  0.1-    161130 A53  0.3-  0.6+    161230 246 (0.6+  1.7+)
    161105 H21  0.2+  0.0     161130 A53  0.6+  0.2-    161230 246  0.5+  1.3+
    161105 H21  0.4+  0.1-    161130 A53  0.4-  0.3+    161230 246  1.1+  1.4+
    161105 H21  0.4+  0.0     161130 160  0.0   0.4+    170107 G96  0.5-  0.1+
    161106 691  0.3-  0.7+    161130 160  0.1+  0.3+    170107 G96  0.0   0.7-
    161106 691  0.1-  0.1+    161130 160  1.1+  0.4+    170107 G96  0.1-  0.5-
    161106 691  0.3-  0.3+    161201 H45  0.2+  0.2+    170107 G96  0.1+  0.2+
    161106 G96  0.1+  0.2+    161201 H45  0.1+  0.2-    170126 F51  0.1-  0.0
    161106 G96  0.1+  0.2-    161201 H45  0.2+  0.1+    170126 F51  0.0   0.3+
    161106 G96  0.1-  0.1+    161201 H45  0.1+  0.2-    170126 F51  0.0   0.2-
    161106 703  0.3-  0.5-    161201 H45  0.3-  0.2-    170126 F51  0.1+  0.1+
    161106 703  0.5-  0.5-    161201 H45  0.0   0.1+    181110 T12  0.1+  0.0
    161106 703 (1.9-  1.1-)   161203 246  0.1-  0.4-    181110 T12  0.0   0.0
    161106 703 (0.1+  1.7-)   161203 246  0.1-  0.6-    181114 T12  0.0   0.1-
    161108 691  0.3-  0.7+    161203 246  0.2-  0.0     181114 T12  0.0   0.0
    161108 691  0.2-  0.5+    161203 246  0.1-  0.2-
    
    Ephemeris:
    2016 UN36                a,e,i = 1.61, 0.35, 3                   q = 1.0384
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2020 05 14    21 28 54.6 -13 29 50   1.6282  1.9628    93.1    30.9    28.0
    ...
    2020 05 29    21 47 02.5 -11 32 59   1.4155  1.9142   102.7    31.1    27.7
    ...
    2020 06 06    21 55 14.5 -10 33 08   1.3048  1.8863   108.2    30.7    27.5
    ...
    2020 06 12    22 00 35.9 -09 50 12   1.2236  1.8645   112.4    30.2    27.3
    2020 06 13    22 01 25.0 -09 43 15   1.2103  1.8608   113.1    30.1    27.3
    2020 06 14    22 02 12.8 -09 36 22   1.1970  1.8570   113.9    30.0    27.2
    ...
    2020 06 20    22 06 29.4 -08 56 42   1.1186  1.8342   118.4    29.2    27.0
    ...
    2020 06 28    22 10 41.9 -08 09 00   1.0181  1.8026   124.7    27.6    26.7
    ...
    2020 07 13    22 13 01.2 -07 01 27   0.8461  1.7400   138.0    23.0    26.1
    
    A. U. Tomatic                (C) Copyright 2020 MPC           M.P.E.C. 2020-L55
    


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