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  • MPEC 2012-H47 : 2012 HJ8

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    M.P.E.C. 2012-H47                                Issued 2012 Apr. 22, 12:58 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 HJ8
    
    Observations:
         K12H08J* C2012 04 20.50681 15 08 09.902+45 11 36.77         21.2 gLEH047F51
         K12H08J  C2012 04 20.51711 15 08 05.980+45 10 54.68         20.8 rLEH047F51
         K12H08J  C2012 04 20.52695 15 08 02.247+45 10 14.49         20.8 rLEH047F51
         K12H08J  C2012 04 21.25098 15 03 48.21 +44 21 36.5          20.0 RoEH047H01
         K12H08J  C2012 04 21.25778 15 03 45.78 +44 21 09.6          20.5 RoEH047H01
         K12H08J  C2012 04 21.26888 15 03 41.88 +44 20 25.8          20.6 RoEH047H01
         K12H08J  C2012 04 21.27659 15 03 39.14 +44 19 55.5          20.5 RoEH047H01
         K12H08J KC2012 04 22.09214 14 59 08.93 +43 26 08.8                uEH047J95
         K12H08J KC2012 04 22.10623 14 59 04.31 +43 25 14.0          20.5 RuEH047J95
         K12H08J  C2012 04 22.28401 14 58 09.34 +43 13 48.4          20.1 RoEH047H01
         K12H08J  C2012 04 22.28946 14 58 07.58 +43 13 27.4          20.2 RoEH047H01
         K12H08J  C2012 04 22.29847 14 58 04.66 +43 12 52.7          20.2 RoEH047H01
         K12H08J  C2012 04 22.30477 14 58 02.60 +43 12 28.0          20.4 RoEH047H01
         K12H08J KC2012 04 22.37058 14 57 41.11 +43 08 08.1          20.0 RuEH047H36
         K12H08J KC2012 04 22.38322 14 57 36.81 +43 07 18.8          20.8 RuEH047H36
         K12H08J KC2012 04 22.39407 14 57 33.39 +43 06 37.3          20.4 RuEH047H36
    
    Observer details:
    F51 Pan-STARRS 1, Haleakala.  Observers N. Primak, A. Schultz, S. Watters,
        J. Thiel, T. Goggia.  Measurer PS1 Science Consortium.  1.8-m
        Ritchey-Chretien + CCD.
    H01 Magdalena Ridge Observatory, Socorro.  Observers W. H. Ryan, E. V. Ryan.
        Measurer W. H. Ryan.  2.4-m f/8.9 reflector + CCD.
    H36 Sandlot Observatory, Scranton.  Observer G. Hug.  0.56-m reflector + CCD.
    J95 Great Shefford.  Observer P. Birtwhistle.  0.40-m f/6.0 Schmidt-Cassegrain
        + CCD.
    
    Orbital elements:
    2012 HJ8                                                 Earth MOID = 0.2016 AU
    Epoch 2012 Mar. 14.0 TT = JDT 2456000.5                 MPC
    M   9.81705              (2000.0)            P               Q
    n   0.37264316     Peri.  334.51556     -0.18586574     -0.96355984
    a   1.9125257      Node   125.61729     +0.93714283     -0.23268579
    e   0.7205167      Incl.   13.68830     +0.29532564     +0.13194607
    P   2.64           H   21.0           G   0.15           U   9
    Residuals in seconds of arc
    120420 F51  0.1+  0.1+    120421 H01  0.2-  0.0     120422 H01  0.1-  0.2+
    120420 F51  0.0   0.0     120422 J95  0.2+  0.3-    120422 H36  1.5+  1.0-
    120420 F51  0.1-  0.1-    120422 J95  0.0   0.3+    120422 H36  1.2-  0.7-
    120421 H01  0.1+  0.0     120422 H01  0.1-  0.3+    120422 H36  0.6-  0.4+
    120421 H01  0.2-  0.1-    120422 H01  0.0   0.4+
    120421 H01  0.0   0.1-    120422 H01  0.0   0.5+
    
    Ephemeris:
    2012 HJ8                 a,e,i = 1.91, 0.72, 14                  q = 0.5345
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2012 03 23    22 41 29.8 +41 51 47   0.2378  0.8468    45.4   123.1    22.6
    ...
    2012 04 07    17 54 30.9 +59 34 14   0.2380  1.0399    92.7    74.0    20.6
    ...
    2012 04 15    15 51 47.2 +51 39 26   0.2863  1.1408   111.7    54.8    20.6
    ...
    2012 04 21    15 05 14.2 +44 38 21   0.3367  1.2147   121.4    45.0    20.8
    2012 04 22    14 59 39.1 +43 32 17   0.3460  1.2268   122.6    43.7    20.8
    2012 04 23    14 54 31.2 +42 27 46   0.3556  1.2389   123.8    42.4    20.9
    ...
    2012 04 29    14 31 05.7 +36 34 38   0.4176  1.3104   128.9    36.7    21.2
    ...
    2012 05 07    14 12 35.4 +30 06 39   0.5112  1.4029   131.9    32.4    21.6
    ...
    2012 05 22    13 57 38.0 +21 01 31   0.7151  1.5674   129.5    29.9    22.5
    
    A. U. Tomatic                (C) Copyright 2012 MPC           M.P.E.C. 2012-H47
    

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