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  • MPEC 2012-H72 : 2012 HC20

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    M.P.E.C. 2012-H72                                Issued 2012 Apr. 26, 17:27 UT
    
         The Minor Planet Electronic Circulars contain information on unusual
             minor planets and routine data on comets.  They are published
       on behalf of Commission 20 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 HC20
    
    Observations:
         K12H20C* C2012 04 24.36809 14 36 23.72 -11 41 54.5          19.3 VrEH072703
         K12H20C  C2012 04 24.37374 14 36 22.89 -11 42 09.1          18.7 VrEH072703
         K12H20C  C2012 04 24.37946 14 36 21.99 -11 42 26.2          18.6 VrEH072703
         K12H20C  C2012 04 24.38519 14 36 21.20 -11 42 41.0          19.4 VrEH072703
         K12H20C  C2012 04 24.41346 14 36 17.02 -11 43 58.4          19.6 VrEH072703
         K12H20C  C2012 04 24.41704 14 36 16.48 -11 44 09.3          19.4 VrEH072703
         K12H20C  C2012 04 24.42072 14 36 15.94 -11 44 20.4          20.1 VrEH072703
         K12H20C  C2012 04 24.42436 14 36 15.40 -11 44 28.0          19.9 VrEH072703
         K12H20C KC2012 04 25.32220 14 34 07.19 -12 26 59.3                tEH072H21
         K12H20C KC2012 04 25.32750 14 34 06.29 -12 27 14.6          20.1 VtEH072H21
         K12H20C IC2012 04 25.33279 14 34 05.44 -12 27 29.2                tEH072H21
         K12H20C  C2012 04 25.35045 14 34 03.25 -12 28 18.5          19.5 VrEH072703
         K12H20C  C2012 04 25.35395 14 34 02.74 -12 28 29.5          19.5 VrEH072703
         K12H20C  C2012 04 25.35755 14 34 02.06 -12 28 40.3          19.4 VrEH072703
         K12H20C  C2012 04 25.36110 14 34 01.52 -12 28 50.5          19.0 VrEH072703
         K12H20C KC2012 04 26.28612 14 31 37.96 -13 15 51.3          19.4 RuEH072H36
         K12H20C KC2012 04 26.29404 14 31 36.62 -13 16 16.5          19.3 RuEH072H36
         K12H20C KC2012 04 26.30199 14 31 35.23 -13 16 41.9          19.5 RuEH072H36
         K12H20C KC2012 04 26.30998 14 31 33.83 -13 17 06.3          19.2 RuEH072H36
    
    Observer details:
    703 Catalina Sky Survey.  Observer R. E. Hill.  Measurers J. D. Ahern,
        E. C. Beshore, A. Boattini, G. J. Garradd, A. R. Gibbs, P. Tricarico,
        A. D. Grauer, R. E. Hill, R. A. Kowalski, S. M. Larson, R. H. McNaught.
        0.68-m Schmidt + CCD.
    H21 Astronomical Research Observatory, Westfield.  Observer R. Holmes.
        Measurers L. Buzzi, S. Foglia, T. Vorobjov, H. Devore.  0.61-m f/4.0
        astrograph + CCD.
    H36 Sandlot Observatory, Scranton.  Observer G. Hug.  0.56-m reflector + CCD.
    
    Orbital elements:
    2012 HC20                                                Earth MOID = 0.1149 AU
    Epoch 2012 Mar. 14.0 TT = JDT 2456000.5                 MPC
    M 330.03419              (2000.0)            P               Q
    n   0.26916000     Peri.  262.56320     +0.47679233     +0.85700940
    a   2.3757225      Node    37.99281     -0.62772659     +0.48762115
    e   0.6528616      Incl.   18.51349     -0.61532788     +0.16661482
    P   3.66           H   21.4           G   0.15           U   9
    Residuals in seconds of arc
    120424 703  0.2+  0.5+    120424 703  0.1-  0.2+    120425 703  0.4-  0.2+
    120424 703  0.3+  1.3+    120425 H21  0.6+  0.5-    120426 H36  0.1-  0.1+
    120424 703  0.5-  0.2-    120425 H21  0.2-  0.4-    120426 H36  0.4+  0.2-
    120424 703  0.3+  0.6+    120425 H21  0.4-  0.5+    120426 H36  0.2+  0.5-
    120424 703  0.2+  0.2+    120425 703  0.1-  0.9+    120426 H36  0.1-  0.3+
    120424 703  0.0   1.0-    120425 703  0.6+  0.2+
    120424 703  0.0   2.1-    120425 703  0.9-  0.0
    
    Ephemeris:
    2012 HC20                a,e,i = 2.38, 0.65, 19                  q = 0.8247
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2012 03 27    14 56 51.3 -02 05 50   0.6489  1.5605   141.8    23.3    22.5
    ...
    2012 04 11    14 54 11.8 -05 07 46   0.4418  1.4175   156.1    16.6    21.3
    ...
    2012 04 19    14 46 12.9 -08 19 13   0.3443  1.3406   165.5    10.8    20.4
    ...
    2012 04 25    14 34 55.2 -12 10 58   0.2781  1.2830   174.1     4.6    19.6
    2012 04 26    14 32 24.0 -13 00 31   0.2677  1.2734   175.7     3.4    19.4
    2012 04 27    14 29 38.9 -13 53 55   0.2575  1.2638   177.3     2.2    19.2
    ...
    2012 05 03    14 06 41.2 -20 57 05   0.2012  1.2069   170.2     8.2    18.9
    ...
    2012 05 11    13 02 03.1 -36 43 21   0.1447  1.1325   145.7    30.1    18.8
    ...
    2012 05 26    07 04 58.8 -51 20 15   0.1461  1.0026    81.8    90.0    20.4
    
    A. U. Tomatic                (C) Copyright 2012 MPC           M.P.E.C. 2012-H72
    

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