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  • MPEC 2020-U42 : 2015 TH145

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    M.P.E.C. 2020-U42                              Issued 2020 October 17, 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
    
                                   2015 TH145                                
    
    
                               Revision to MPEC 2015-T92                            
    
    Additional Observations:
         K15TE5H 2C2020 10 16.06386423 55 33.216+10 58 12.77         21.1 GVEU042J04
         K15TE5H 2C2020 10 16.08373523 55 30.716+10 58 10.39         21.2 GVEU042J04
         K15TE5H 2C2020 10 16.10376423 55 28.184+10 58 07.51         21.3 GVEU042J04
         K15TE5H 2C2020 10 17.03358823 53 33.749+10 56 07.25         21.3 GVEU042J04
         K15TE5H 2C2020 10 17.04573523 53 32.214+10 56 05.56         21.3 GVEU042J04
         K15TE5H 2C2020 10 17.05788523 53 30.683+10 56 04.16         21.7 GVEU042J04
    
    Observer details:
    J04 ESA Optical Ground Station, Tenerife.  Observer P. Ruiz.  Measurers M.
        Micheli, D. Koschny, L. Conversi, A. Knofel, M. Busch, E. Schwab.  1.0-m
        f/4.4 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
    201016 J04 0.62+ 0.64+    201017 J04 0.61+ 0.64+    MPO473417   +1.36 days
    
    Orbital elements:
    2015 TH145                                          PHA, Earth MOID = 0.0014 AU
    Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Veres
    M 349.37643              (2000.0)            P               Q
    n   0.19247150     Peri.  128.95255     -0.51512978     -0.85654067
    a   2.9709255      Node   351.87145     +0.70189879     -0.40060906
    e   0.7164042      Incl.   12.78731     +0.49191401     -0.32534667
    P   5.12           H   20.1           G   0.15           U   1
    Residuals in seconds of arc
    151010 F51  0.0   0.1+    151018 H21  0.1-  0.0     151108 H45  0.1-  0.4+
    151010 F51  0.1-  0.0     151019 H21  0.0   0.4-    151108 H45  0.8-  0.4+
    151010 F51  0.1-  0.0     151019 H21  0.4-  0.2-    151108 H45  0.9-  0.0
    151011 H01  0.1-  0.1+    151019 H21  0.1-  0.4-    151108 H45  0.3-  0.6-
    151011 H01  0.1-  0.0     151020 H45  0.2-  1.3+    151108 H45  0.3-  0.1-
    151011 H01  0.1-  0.1-    151020 H45  0.2-  0.7-    151108 H45  1.2-  0.2+
    151011 H01  0.2-  0.0     151020 H45  0.5-  0.4-    151108 H45  0.6-  0.8-
    151011 754  0.0   0.1-    151020 H45  0.1+  0.4+    151109 H21  0.4+  0.2+
    151011 754  0.3-  0.1+    151020 H45  0.0   0.0     151109 H21  0.4+  0.0
    151011 754  0.0   0.1-    151020 H45  0.2+  0.6-    151109 H21  0.2+  0.0
    151012 H36  0.2-  0.6-    151021 H45  0.5-  1.3-    151109 H21  0.5+  0.1-
    151012 H36  1.5+  0.1+    151021 H45  0.2+  1.1-    151109 H21  0.4+  0.1+
    151012 F51  0.0   0.2+    151021 H45  0.1-  1.0-    151109 H21  0.0   0.1+
    151012 F51  0.1-  0.0     151022 H21  0.1-  0.2+    151109 H21  0.1-  0.1+
    151012 F51  0.1+  0.0     151022 H21  0.3-  0.0     151109 H21  0.0   0.1-
    151013 F51  0.1+  0.2+    151022 H21  0.1+  0.2+    151109 H21  0.1-  0.2-
    151013 F51  0.1+  0.1-    151025 705  0.0   0.0     151109 H21  0.3+  0.1+
    151013 F51  0.1+  0.1+    151025 705  0.0   0.4-    151109 H21  0.3+  0.1+
    151014 568  0.0   0.0     151025 705  0.1+  0.2+    151109 H21  0.5+  0.0
    151014 568  0.0   0.0     151025 J95  0.4-  0.6+    151109 H21  0.0   0.0
    151015 H21  0.1+  0.2+    151026 J95  0.1+  0.1+    151109 H21  0.0   0.1+
    151015 H21  0.2+  0.0     151101 F51  0.2+  0.0     151109 926  0.2+  0.1+
    151015 H21  0.1+  0.2+    151101 F51  0.1+  0.0     151109 926  0.1+  0.2+
    151015 291  0.1-  0.2+    151102 H21  0.4+  0.1-    151109 926  0.1-  0.0
    151015 291  0.0   0.2+    151102 H21  0.2+  0.1-    151117 291  0.1-  0.5+
    151015 291  0.1-  0.4+    151102 H21  0.0   0.2-    151117 291  0.1-  0.6-
    151015 568  0.0   0.0     151104 H21  0.1+  0.1+    151117 291  0.3+  0.3+
    151015 568  0.0   0.0     151104 H21  0.2+  0.0     201016 J04  0.0   0.0
    151016 H21  0.2+  0.1+    151104 H21  0.0   0.0     201016 J04  0.2+  0.2+
    151016 H21  0.3+  0.1+    151104 C77  0.2+  0.1-    201016 J04  0.1+  0.0
    151016 H21  0.3+  0.3+    151104 C77  0.1-  0.2+    201017 J04  0.1-  0.2-
    151018 H21  0.0   0.1+    151104 C77  0.2+  0.1-    201017 J04  0.0   0.3-
    151018 H21  0.3-  0.2+    151106 926  0.1+  0.1+    201017 J04  0.1+  0.0
    151018 H21  0.1+  0.2+    151106 926  0.0   0.7-
    151018 H21  0.1+  0.0     151106 926  0.2+  0.3-
    
    Ephemeris:
    2015 TH145               a,e,i = 2.97, 0.72, 13                  q = 0.8425
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2020 09 17    00 45 55.2 +10 57 39   1.1190  2.0878   158.7    10.1    22.6
    ...
    2020 10 02    00 23 11.9 +11 14 35   0.9506  1.9467   171.9     4.1    21.8
    ...
    2020 10 10    00 07 54.5 +11 08 51   0.8852  1.8695   165.9     7.5    21.7
    ...
    2020 10 16    23 55 41.5 +10 58 24   0.8474  1.8108   158.1    11.9    21.7
    2020 10 17    23 53 38.2 +10 56 15   0.8420  1.8010   156.7    12.6    21.8
    2020 10 18    23 51 35.1 +10 54 01   0.8369  1.7911   155.3    13.4    21.8
    ...
    2020 10 24    23 39 28.4 +10 39 11   0.8111  1.7316   146.9    18.3    21.8
    ...
    2020 11 01    23 24 35.2 +10 19 01   0.7884  1.6513   135.7    24.8    21.8
    ...
    2020 11 16    23 03 50.0 +09 58 55   0.7702  1.4987   116.3    36.3    21.9
    
    A. U. Tomatic                (C) Copyright 2020 MPC           M.P.E.C. 2020-U42
    


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