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  • MPEC 2019-U270 : 2012 VZ4

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    M.P.E.C. 2019-U270                             Issued 2019 October 30, 11:18 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
    
                                    2012 VZ4                                 
    
    
                                Revision to MPEC 2012-V9                            
    
    Additional Observations:
         K12V04Z |C2019 10 25.00201 22 20 34.36 -45 19 09.1          20.3 VuEU270807
         K12V04Z |C2019 10 25.00469 22 20 34.74 -45 18 48.6          20.2 VuEU270807
         K12V04Z |C2019 10 25.00722 22 20 35.11 -45 18 29.0          20.4 VuEU270807
         K12V04Z |C2019 10 25.01235 22 20 35.82 -45 17 49.0          20.3 VuEU270807
         K12V04Z |C2019 10 25.01504 22 20 36.19 -45 17 28.1          20.4 VuEU270807
         K12V04Z |C2019 10 25.01765 22 20 36.55 -45 17 07.8          20.2 VuEU270807
         K12V04Z |C2019 10 26.18744 22 23 32.17 -42 44 38.4          20.4 VuEU270807
         K12V04Z |C2019 10 26.19137 22 23 32.75 -42 44 07.4          20.4 VuEU270807
         K12V04Z |C2019 10 26.19518 22 23 33.30 -42 43 37.2          20.5 VuEU270807
    
    Observer details:
    807 Cerro Tololo Observatory, La Serena.  Observers T. Linder, R. Holmes.  
        0.61-m f/6.5 astrograph + CCD.
    
    First and last observations above in comparison with prediction:
    Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
    191025 807 0.40- 0.25-    191026 807 0.40- 0.27-    MPO252130   -0.22 days
    
    Orbital elements:
    2012 VZ4                                                 Earth MOID = 0.1947 AU
    Epoch 2019 Apr. 27.0 TT = JDT 2458600.5                 Veres
    M 300.73053              (2000.0)            P               Q
    n   0.42244926     Peri.  300.05110     +0.81787587     +0.50346731
    a   1.7590831      Node    32.28944     -0.14785672     +0.65176979
    e   0.4057759      Incl.   31.43088     -0.55607325     +0.56720086
    P   2.33           H   20.1           G   0.15           U   3
    Residuals in seconds of arc
    121102 F51  0.1-  0.2+    121105 807  0.1+  0.2-    121125 291  0.2-  0.2-
    121102 F51  0.1+  0.0     121106 807  0.3+  0.4+    121125 291  0.4+  0.4-
    121103 291 (0.3-  1.9+)   121106 807  0.2+  0.1+    121125 291  0.7-  0.2+
    121103 291  0.2+  1.1+    121106 807  0.2+  0.1-    121204 291  0.5-  0.0
    121103 291  0.9-  0.4+    121107 204  0.1+  0.1-    121204 291  0.2+  0.2-
    121103 F65  0.4-  0.0     121107 204  0.0   0.3+    121204 291  0.3+  0.2-
    121103 F65  0.1-  0.1-    121108 807  0.4+  0.2-    130107 291  0.6+  0.6-
    121103 F65  0.1-  0.0     121108 807  0.2+  0.2-    130107 291  0.0   0.9+
    121103 F65  0.0   0.1-    121108 807  0.2+  0.1-    191025 807  0.2+  0.3+
    121103 F65  0.1-  0.0     121113 H21  0.5+  0.1-    191025 807  0.2+  0.1-
    121104 807  0.0   0.2-    121113 H21  0.2+  0.0     191025 807  0.3+  0.2-
    121104 807  0.1-  0.1-    121113 H21  0.2+  0.2+    191025 807  0.1+  0.1-
    121104 807  0.3-  0.1+    121113 291  0.4-  0.7+    191025 807  0.1-  0.2-
    121104 807  0.0   0.1+    121113 291  0.3-  0.2+    191025 807  0.2-  0.2-
    121105 807  0.1+  0.3-    121113 291  0.0   0.6-    191026 807  0.2-  0.2-
    121105 807  0.0   0.3-    121120 291  0.3+  0.2-    191026 807  0.1+  0.3-
    121105 807  0.0   0.2-    121120 291  0.1-  0.2+    191026 807  0.3+  0.2-
    121105 807  0.2-  0.0     121120 291  0.7-  0.5-
    
    Ephemeris:
    2012 VZ4                 a,e,i = 1.76, 0.41, 31                  q = 1.0453
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2019 09 30    17 05 18.2 -83 25 09   0.4336  1.0587    85.3    70.6    20.9
    ...
    2019 10 15    21 43 32.9 -65 37 40   0.3535  1.0949    96.4    64.8    20.3
    ...
    2019 10 23    22 15 03.6 -49 37 58   0.3360  1.1222   103.5    59.6    20.1
    ...
    2019 10 29    22 30 05.1 -36 39 12   0.3408  1.1458   108.0    55.5    20.1
    2019 10 30    22 32 14.3 -34 30 40   0.3432  1.1500   108.7    54.9    20.1
    2019 10 31    22 34 19.4 -32 23 26   0.3461  1.1542   109.2    54.3    20.1
    ...
    2019 11 06    22 45 43.5 -20 23 07   0.3728  1.1808   111.6    51.3    20.2
    ...
    2019 11 14    22 59 14.5 -07 01 47   0.4299  1.2191   112.3    48.7    20.5
    ...
    2019 11 29    23 23 16.8 +10 00 05   0.5818  1.2975   108.9    46.0    21.2
    
    A. U. Tomatic                (C) Copyright 2019 MPC           M.P.E.C. 2019-U270
    


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