[Iaude] MPEC K73: 2012 KB4 [a=1.09,e=0.06,i=6.3,H=25.4]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Tue May 19 14:59:11 EDT 2020


M.P.E.C. 2020-K73                                  Issued 2020 May 19, 18:57 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 at CFA.HARVARD.EDU
            URL https://www.minorplanetcenter.net/    ISSN 1523-6714

                                    2012 KB4                                    


                           Revision to MPEC 2012-K22                            

Additional Observations:
     K12K04B  C2020 04 20.53916816 21 55.555-00 01 47.92         22.4 GVEK073F51
     K12K04B  C2020 04 20.55309316 21 55.112-00 01 59.41         22.8 GVEK073F51
     K12K04B  C2020 04 20.56697216 21 54.659-00 02 10.67         22.1 GVEK073F51
     K12K04B  C2020 04 29.50011416 16 54.987-02 45 50.77         22.1 GVEK073F52
     K12K04B  C2020 04 29.51199416 16 53.949-02 46 07.44         22.1 GVEK073F52
     K12K04B  C2020 04 29.52387016 16 52.968-02 46 25.19         21.2 GVEK073F52
     K12K04B  C2020 04 29.53573216 16 51.926-02 46 42.04         22.2 GVEK073F52
     K12K04B  C2020 05 02.52540816 13 25.787-04 04 51.97         21.9 GVEK073F52
     K12K04B  C2020 05 02.53920916 13 24.295-04 05 15.08         22.2 GVEK073F52
     K12K04B  C2020 05 02.55296616 13 22.842-04 05 38.78         21.1 GVEK073F52
     K12K04B  C2020 05 16.33794415 44 21.288-13 24 47.00         20.9 GVEK073F51
     K12K04B  C2020 05 16.34958615 44 18.851-13 25 24.81         20.9 GVEK073F51
     K12K04B  C2020 05 19.38126015 34 44.825-16 14 03.33         20.88wUEK073F51
     K12K04B  C2020 05 19.39263315 34 42.116-16 14 42.84         21.05wUEK073F51
     K12K04B  C2020 05 19.41534615 34 36.660-16 16 02.69         21.27wUEK073F51

Observer details:
F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, K. Chambers, T. Lowe, A. 
   Schultz, M. Willman.  Measurers S. Chastel, M. Huber, Y. Ramanjooloo, R. 
   Wainscoat, R. Weryk, K. Chambers, T. de Boer, L. Denneau, J. Fairlamb, H. 
   Flewelling, C.-C. Lin, E. Magnier.  1.8-m Ritchey-Chretien + CCD.
F52 Pan-STARRS 2, Haleakala.  Observers J. Bulger, K. Chambers, T. Dukes, T. 
   Lowe, A. Schultz, M. Willman.  Measurers S. Chastel, M. Huber, Y. 
   Ramanjooloo, R. Wainscoat, R. Weryk.  1.8-m Ritchey-Chretien + CCD.

First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
200420 F51 2.80+ 1.38+    200519 F51 5.27+ 1.97+    MPO231383   +0.49 days

Orbital elements:
2012 KB4                                                 Earth MOID = 0.0712 AU
Epoch 2020 May 31.0 TT = JDT 2459000.5                  Veres
M 277.09074              (2000.0)            P               Q
n   0.86284610     Peri.  277.68413     +0.92299330     +0.37270771
a   1.0927324      Node    60.47681     -0.29519441     +0.84541531
e   0.0609254      Incl.    6.31897     -0.24686765     +0.38257277
P   1.14           H   25.4           G   0.15           U   3
Residuals in seconds of arc
120517 G96  0.2-  0.1-    120521 F51  0.1-  0.1-    200429 F52  0.2-  0.3+
120517 G96  0.3+  0.2+    120521 F51  0.0   0.1-    200429 F52  0.6+  0.4-
120517 G96  0.2-  0.2-    120521 F51  0.1+  0.2+    200429 F52  0.4+  0.3-
120517 G96  0.2-  0.0     120521 F51  0.1+  0.1-    200502 F52  0.1+  0.2-
120517 G96  0.3-  0.1-    120529 291  0.2+  0.3+    200502 F52  0.1-  0.2+
120517 G96  0.3-  0.0     120529 291  0.6-  0.3+    200502 F52  0.0   0.2-
120517 G96  0.3+  0.0     120529 291  0.3-  0.1-    200516 F51  0.1-  0.0
120519 G96  0.1-  0.3-    200420 F51  0.0   0.2+    200516 F51  0.0   0.1+
120519 G96  0.2+  0.8-    200420 F51  0.0   0.0     200519 F51  0.0   0.1-
120519 G96  0.1-  0.1-    200420 F51  0.1-  0.0     200519 F51  0.1+  0.3+
120519 G96  0.0   0.2+    200429 F52  0.1-  0.1-    200519 F51  0.1+  0.0

Ephemeris:
2012 KB4                 a,e,i = 1.09, 0.06, 6                   q = 1.0262
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2020 04 19    16 22 04.0 +00 18 14   0.1553  1.1280   140.1    34.8    23.1
...
2020 05 04    16 11 24.1 -04 47 59   0.1155  1.1149   156.1    21.5    22.0
...
2020 05 12    15 55 58.0 -09 50 41   0.09935 1.1074   167.3    11.6    21.3
...
2020 05 18    15 39 12.3 -14 54 26   0.09023 1.1015   175.4     4.3    20.8
2020 05 19    15 35 58.8 -15 51 03   0.08899 1.1005   175.7     4.0    20.7
2020 05 20    15 32 38.5 -16 49 10   0.08785 1.0995   175.2     4.4    20.7
...
2020 05 26    15 10 29.2 -23 02 17   0.08286 1.0936   165.6    13.3    21.0
...
2020 06 03    14 37 28.4 -31 39 10   0.08110 1.0855   150.3    27.6    21.4
...
2020 06 18    13 38 47.3 -45 03 08   0.08906 1.0707   125.9    50.3    22.2

A. U. Tomatic                (C) Copyright 2020 MPC           M.P.E.C. 2020-K73




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