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  • MPEC 2019-M03 : 2015 US81

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    M.P.E.C. 2019-M03                                Issued 2019 June 16, 15:01 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 US81                                
    
                               Revision to MPEC 2015-V34                            
    
    Additional Observations:
         K15U81S  C2019 06 08.41541717 46 56.392-03 43 48.54         23.34GVEM003T12
         K15U81S  C2019 06 08.42289517 46 55.806-03 43 51.88         23.41GVEM003T12
         K15U81S  C2019 06 08.43049217 46 55.202-03 43 55.24         23.31GVEM003T12
         K15U81S  C2019 06 11.38088617 43 03.148-04 06 32.53         22.99GVEM003T12
         K15U81S  C2019 06 11.39129317 43 02.301-04 06 37.52         23.14GVEM003T12
    
    Observer details:
    T12 Mauna Kea-UH/Tholen NEO Follow-Up (2.24-m).  Observer D. Hung.  
        2.24-m f/10.1 reflector + CCD.
    
    First and last observations above in comparison with prediction:
    Residuals in seconds of arc, reference and Delta-T
    190608 T12 10.9- 14.2-    190611 T12 10.8- 14.5-    MPO373590   -0.03 days
    
    Orbital elements:
    2015 US81                                                Earth MOID = 0.5571 AU
    Epoch 2019 Apr. 27.0 TT = JDT 2458600.5                 MPC
    M 279.31922              (2000.0)            P               Q
    n   0.21329470     Peri.  294.84529     +0.51253082     -0.30285870
    a   2.7742739      Node    93.40985     +0.70474147     +0.68295758
    e   0.5330745      Incl.   53.60160     -0.49056256     +0.66471464
    P   4.62           H   18.9           G   0.15           U   1
    Residuals in seconds of arc
    151029 C51  0.3-  0.5-    151206 H21  0.4-  0.2-    151217 G45  0.4+  0.3+
    151029 C51  0.2-  1.4+    151206 H21  0.2-  0.2-    151219 H45  0.6+  0.3-
    151029 C51  0.7-  0.0     151206 H21  0.2-  0.2+    151219 H45  0.4-  0.5+
    151029 C51  0.9+  0.6-    151206 H21  0.0   0.2+    151219 H45  0.1-  0.4-
    151030 C51  0.5+  0.0     151209 H21  0.1-  0.1+    151219 H45  0.0   0.6-
    151030 C51  0.4+  0.3-    151209 H21  0.3+  0.6+    151219 H45  0.1+  0.2+
    151031 291  0.6+  0.6+    151211 H21  0.4-  0.4+    151219 H45  0.3-  0.1+
    151031 291  0.4+  0.3-    151211 H21  0.1+  0.7+    151220 130  0.1-  0.1-
    151101 807  0.4-  0.7-    151211 H21  0.6+  0.7+    151220 130  0.2+  0.6-
    151101 807  0.2-  0.4-    151214 G45  0.2+  0.0     151220 130  0.1+  0.4+
    151101 807  0.3+  0.5-    151214 G45  0.1-  0.2+    151230 711  0.1+  0.3-
    151101 807  0.3+  0.2-    151214 G45  0.1-  0.3-    151230 711  0.2-  0.3-
    151102 K92  0.5+  0.1+    151214 G45  0.1-  0.4+    151230 711  0.7-  0.7+
    151102 K92  0.3+  0.0     151214 G45  0.2-  0.0     160206 H21  0.3-  0.3+
    151103 K92  0.1+  0.0     151216 H15  0.0   0.1+    160206 H21  0.3+  0.0
    151103 568  0.1-  0.0     151216 H15  0.2+  0.5+    160206 H21  1.0+  0.0
    151103 568  0.1-  0.0     151216 H15  0.0   0.1+    160225 695  0.0   0.2+
    151122 705  0.2+  0.8-    151217 G45  0.0   0.2+    160225 695  0.3-  0.1-
    151122 705  0.4+  0.6-    151217 G45  0.1-  0.1+    160225 695  0.1+  0.3+
    151128 695  0.1+  0.1-    151217 G45  0.0   0.1-    190608 T12  0.6+  0.5+
    151128 695  0.0   0.2-    151217 G45  0.3-  0.1+    190608 T12  0.6+  0.5+
    151128 695  0.0   0.1+    151217 G45  0.1-  0.9-    190608 T12  0.6+  0.5+
    151203 926  0.4+  0.3-    151217 G45  0.0   0.3+    190611 T12  0.6+  0.5+
    151203 926  0.5+  0.0     151217 G45  0.6+  0.7+    190611 T12  0.6+  0.5+
    151203 926  0.3-  0.6-    151217 G45  0.4-  0.2+
    151206 H21  0.4-  0.2-    151217 G45  0.1-  0.1+
    
    Ephemeris:
    2015 US81                a,e,i = 2.77, 0.53, 54                  q = 1.2954
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2019 05 17    18 10 45.2 -01 47 04   2.3558  3.1771   137.7    12.4    24.0
    ...
    2019 06 01    17 56 01.8 -02 54 34   2.1725  3.1065   152.3     8.7    23.6
    ...
    2019 06 09    17 46 11.0 -03 48 07   2.1001  3.0678   158.6     6.9    23.5
    ...
    2019 06 15    17 38 09.6 -04 36 34   2.0589  3.0383   161.3     6.2    23.4
    2019 06 16    17 36 47.1 -04 45 18   2.0532  3.0334   161.4     6.1    23.3
    2019 06 17    17 35 24.1 -04 54 14   2.0477  3.0284   161.5     6.1    23.3
    ...
    2019 06 23    17 26 59.2 -05 51 28   2.0221  2.9984   160.3     6.6    23.3
    ...
    2019 07 01    17 15 45.6 -07 16 36   2.0064  2.9578   154.7     8.4    23.3
    ...
    2019 07 16    16 56 30.1 -10 15 34   2.0304  2.8797   139.5    13.3    23.5
    
    A. U. Tomatic                (C) Copyright 2019 MPC           M.P.E.C. 2019-M03
    


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