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  • MPEC 2020-L61 : 2009 KC7

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    M.P.E.C. 2020-L61                                 Issued 2020 June 15, 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
    
                                    2009 KC7                                 
    
    
                               Revision to MPEC 2009-K60                            
    
    Additional Observations:
         K09K07C  C2018 11 10.26042300 47 03.229+22 55 37.11         24.11GVEL061T12
         K09K07C  C2018 11 10.27212000 47 02.826+22 55 30.06         23.86GVEL061T12
         K09K07C  C2018 11 14.32527900 44 59.941+22 14 57.90         24.12GVEL061T12
    
    Observer details:
    T12 Mauna Kea-UH/Tholen NEO Follow-Up (2.24-m).  Observers D. Hung, D.
        Fohring.  Measurer 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, reference and Delta-T
    181110 T12 99.7+ 24.6+    181114 T12 97.4+ 24.8+    MPO160910   +0.18 days
    
    Orbital elements:
    2009 KC7                                                 Earth MOID = 0.2109 AU
    Epoch 2020 May 31.0 TT = JDT 2459000.5                  Veres
    M 205.61971              (2000.0)            P               Q
    n   0.22979871     Peri.  357.50179     -0.27878601     +0.92482780
    a   2.6397998      Node   256.21911     -0.87642247     -0.35518218
    e   0.5357866      Incl.   15.45371     -0.39263471     +0.13615860
    P   4.29           H   19.5           G   0.15           U   1
    Residuals in seconds of arc
    090527 G96  0.1-  0.1-    090613 A17  0.1+  0.3-    090712 H55  0.3-  0.1-
    090527 G96  0.0   0.1-    090614 587  1.0-  0.7+    090720 587  0.1-  0.5+
    090527 G96  0.3+  0.1+    090614 587  0.3+  0.2+    090720 587  0.1-  0.1-
    090527 G96  0.4+  0.0     090614 587  0.4-  0.4+    090720 587  0.5+  0.1-
    090527 G96  0.2+  0.3-    090614 587  0.4+  0.2+    090721 H55  0.5+  0.5-
    090527 G96  0.4+  0.1-    090614 147  0.3-  0.7+    090721 H55  0.8+  0.7-
    090527 G96  0.1-  0.1-    090614 147  0.8+  0.2+    090721 H55  1.0+  0.7-
    090527 G96  0.3+  0.0     090616 703  0.7-  0.3-    090723 J08  0.3+  0.0
    090527 G96  0.1+  0.1-    090616 703  0.4-  0.4+    090723 204  0.1+  0.1+
    090527 G96  0.3-  0.1-    090616 703  0.5-  0.7+    090724 204  0.4-  0.1-
    090527 G96  0.0   0.1-    090618 H55  0.2+  0.3+    090726 198  0.4+  0.3+
    090527 G96  0.2+  0.2+    090618 H55  0.2-  0.1+    090726 198  0.2-  0.2+
    090528 114  0.6-  0.1+    090618 H55  0.4-  0.2+    090726 198  0.3-  0.1-
    090528 114  0.7-  0.1+    090619 H55  0.2+  0.0     090727 H45  0.6+  0.6-
    090528 114  0.5-  0.2+    090619 H55  0.2+  0.0     090727 H45  0.6+  0.3+
    090528 114  0.0   0.4-    090619 H55  0.1+  0.0     090727 H45  0.7+  0.3+
    090529 D21  0.3-  0.6+    090624 H55  0.0   0.1+    090727 H45  0.1+  0.2+
    090529 D21  0.5-  0.5+    090624 H55  0.1-  0.0     090727 H45  0.3-  0.2+
    090529 D21  0.5+  0.1-    090624 H55  0.0   0.1+    090727 H45  0.1+  0.4+
    090531 H55  0.1-  0.1+    090629 198  0.5-  0.9+    090728 H55  0.2+  0.3-
    090531 H55  0.1-  0.1-    090706 H55  0.6-  0.6+    090728 H55  0.1+  0.1-
    090531 H55  0.1-  0.0     090706 H55  0.2+  0.4-    090728 H55  0.1-  0.1+
    090531 H55  0.1-  0.1+    090706 H55  0.1-  0.0     090728 H55  0.2-  0.2+
    090601 H55  0.6+  0.3+    090706 H55  0.1-  0.0     090730 H55  0.1+  0.0
    090601 H55  0.1-  0.0     090706 H55  0.0   0.0     090730 H55  0.3+  0.3-
    090601 H55  0.1-  0.0     090707 H55  0.2+  0.7-    090809 H55  0.1-  0.3-
    090601 448  0.5+  0.1-    090707 H55  0.0   0.3-    090809 H55  0.5-  0.3-
    090601 448  0.5+  0.2-    090707 H55  0.1+  0.2-    090809 H55  0.8-  0.3-
    090601 448  0.4-  0.4-    090708 A13  0.5+  0.2+    090812 H55  0.6+  0.0
    090605 H55  0.4-  0.0     090708 A13  0.2+  0.4-    090812 H55  0.0   0.3-
    090605 H55  0.0   0.1-    090710 H55  0.8-  0.0     090812 H55  0.0   0.3-
    090605 H55  0.3+  0.5-    090710 H55  0.0   0.0     181110 T12  0.0   0.0
    090605 H55  0.4+  0.2-    090710 H55  0.2+  0.2+    181110 T12  0.1+  0.1+
    090613 A17  0.0   0.5-    090712 H55  0.2-  0.1+    181114 T12  0.1-  0.0
    090613 A17  0.0   0.3-    090712 H55  0.1-  0.4-
    
    Ephemeris:
    2009 KC7                 a,e,i = 2.64, 0.54, 15                  q = 1.2254
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2020 05 16    05 01 07.4 +21 33 19   4.9364  4.0092    21.0     5.2    26.4
    ...
    2020 05 31    05 17 27.1 +21 38 04   4.9868  3.9941    10.5     2.6    26.3
    ...
    2020 06 08    05 26 20.2 +21 37 58   4.9952  3.9851     5.0     1.3    26.2
    ...
    2020 06 14    05 33 02.8 +21 36 32   4.9931  3.9780     1.8     0.5    26.1
    2020 06 15    05 34 10.0 +21 36 11   4.9920  3.9768     1.7     0.4    26.1
    2020 06 16    05 35 17.3 +21 35 48   4.9907  3.9755     1.9     0.5    26.1
    ...
    2020 06 22    05 42 01.3 +21 32 44   4.9789  3.9679     5.3     1.3    26.2
    ...
    2020 06 30    05 50 59.1 +21 26 40   4.9518  3.9572    10.7     2.7    26.2
    ...
    2020 07 15    06 07 35.8 +21 08 57   4.8672  3.9355    21.0     5.3    26.3
    
    A. U. Tomatic                (C) Copyright 2020 MPC           M.P.E.C. 2020-L61
    


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