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  • MPEC 2012-H45 : 2012 HG8

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    M.P.E.C. 2012-H45                                Issued 2012 Apr. 22, 12:54 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 HG8
    
    Observations:
         K12H08G* C2012 04 20.25484 12 59 20.29 -21 38 39.9          17.6 VrEH045703
         K12H08G  C2012 04 20.26295 12 59 20.72 -21 37 43.3          17.8 VrEH045703
         K12H08G  C2012 04 20.27106 12 59 21.15 -21 36 46.5          17.8 VrEH045703
         K12H08G  C2012 04 20.27928 12 59 21.58 -21 35 49.3          17.5 VrEH045703
         K12H08G  C2012 04 20.32059 12 59 23.67 -21 31 02.0          17.7 VrEH045703
         K12H08G  C2012 04 20.32127 12 59 23.74 -21 30 57.2          17.6 VrEH045703
         K12H08G  C2012 04 20.32197 12 59 23.74 -21 30 52.3          17.6 VrEH045703
         K12H08G  C2012 04 20.32265 12 59 23.82 -21 30 47.8          17.6 VrEH045703
         K12H08G  C2012 04 20.38437 12 59 29.51 -21 23 00.7          17.6 RoEH045474
         K12H08G  C2012 04 20.38507 12 59 29.52 -21 22 55.8          17.8 RoEH045474
         K12H08G  C2012 04 20.38579 12 59 29.58 -21 22 50.4          17.6 RoEH045474
         K12H08G  C2012 04 20.38648 12 59 29.62 -21 22 46.3          17.6 RoEH045474
         K12H08G  C2012 04 20.58747 12 59 40.77 -20 59 58.8          17.8 VoEH045E23
         K12H08G  C2012 04 20.59440 12 59 41.14 -20 59 12.1          18.0 VoEH045E23
         K12H08G QC2012 04 20.59667812 59 41.27 -20 58 57.6          17.6 VrEH045E12
         K12H08G  C2012 04 20.60100 12 59 41.43 -20 58 26.8          17.5 VoEH045E23
         K12H08G QC2012 04 20.61645512 59 42.27 -20 56 43.0          17.6 VrEH045E12
         K12H08G QC2012 04 20.63740012 59 43.347-20 54 20.99         18.0 VrEH045E12
         K12H08G QC2012 04 20.63778112 59 43.396-20 54 17.83         17.8 VrEH045E12
         K12H08G QC2012 04 20.63813112 59 43.410-20 54 15.30         17.7 VrEH045E12
         K12H08G KC2012 04 20.89460 13 00 00.81 -20 26 17.2                tEH045204
         K12H08G KC2012 04 20.89857 13 00 01.02 -20 25 51.0                tEH045204
         K12H08G KC2012 04 20.90255 13 00 01.22 -20 25 24.8          17.7 RtEH045204
         K12H08G KC2012 04 20.95371 13 00 04.12 -20 19 48.2                uEH045J95
         K12H08G KC2012 04 20.95697 13 00 04.30 -20 19 26.6                uEH045J95
         K12H08G KC2012 04 20.95749 13 00 05.90 -20 18 39.8          17.7 VuEH045I39
         K12H08G KC2012 04 20.96030 13 00 04.46 -20 19 04.6          17.6 RuEH045J95
         K12H08G |C2012 04 20.96679 13 00 06.68 -20 17 39.2          18.3 VoEH045807
         K12H08G KC2012 04 20.96957 13 00 06.63 -20 17 21.5          17.7 VuEH045I39
         K12H08G |C2012 04 20.97198 13 00 06.98 -20 17 05.7          18.3 VoEH045807
         K12H08G |C2012 04 20.97538 13 00 07.17 -20 16 43.1          18.1 VoEH045807
         K12H08G |C2012 04 20.97709 13 00 07.26 -20 16 32.1          18.4 VoEH045807
         K12H08G KC2012 04 20.98164 13 00 07.24 -20 16 01.6          17.9 VuEH045I39
         K12H08G  C2012 04 21.13748 13 00 16.63 -19 59 37.5          18.7 RoEH045G48
         K12H08G  C2012 04 21.13802 13 00 16.65 -19 59 34.3          18.8 RoEH045G48
         K12H08G  C2012 04 21.13855 13 00 16.69 -19 59 30.4          19.1 RoEH045G48
         K12H08G  C2012 04 21.13909 13 00 16.73 -19 59 27.1          18.9 RoEH045G48
         K12H08G  C2012 04 21.13963 13 00 16.75 -19 59 23.5          18.5 RoEH045G48
         K12H08G KC2012 04 21.19932 13 00 18.24 -19 52 24.5                uEH045I48
         K12H08G KC2012 04 21.20249 13 00 18.38 -19 52 03.7                uEH045I48
         K12H08G KC2012 04 21.20567 13 00 18.53 -19 51 43.4                uEH045I48
         K12H08G  C2012 04 21.20945 13 00 20.10 -19 51 54.4          17.5 RoEH045H01
         K12H08G  C2012 04 21.21769 13 00 20.49 -19 51 01.3          17.3 RoEH045H01
         K12H08G  C2012 04 21.22476 13 00 20.97 -19 50 14.8          17.5 RcEH045651
         K12H08G  C2012 04 21.22550 13 00 21.00 -19 50 10.1          17.6 RcEH045651
         K12H08G  C2012 04 21.22624 13 00 21.08 -19 50 04.8          17.5 RcEH045651
         K12H08G  C2012 04 21.22869 13 00 21.02 -19 49 50.5          17.5 RoEH045H01
         K12H08G  C2012 04 21.23887 13 00 21.51 -19 48 44.9          17.5 RoEH045H01
         K12H08G  C2012 04 21.25209 13 00 21.81 -19 47 20.6          17.8 RuEH045H36
         K12H08G  C2012 04 21.25375 13 00 21.88 -19 47 09.8          17.7 RuEH045H36
         K12H08G  C2012 04 21.25696 13 00 22.02 -19 46 49.4          17.7 RuEH045H36
         K12H08G  C2012 04 21.50578 13 00 36.91 -19 19 44.1          18.1 RoEH045474
         K12H08G  C2012 04 21.50648 13 00 36.96 -19 19 39.5          17.8 RoEH045474
         K12H08G  C2012 04 21.50719 13 00 37.00 -19 19 35.0          18.0 RoEH045474
         K12H08G  C2012 04 21.50789 13 00 37.03 -19 19 30.7          17.9 RoEH045474
         K12H08G  C2012 04 21.50860 13 00 37.08 -19 19 26.3          17.9 RoEH045474
         K12H08G  C2012 04 21.51706 13 00 38.00 -19 18 37.9          17.8 VoEH045E23
         K12H08G  C2012 04 21.52272 13 00 38.36 -19 18 03.0          18.0 VoEH045E23
         K12H08G KC2012 04 21.95908 13 01 03.38 -18 33 36.9                uEH045J95
         K12H08G KC2012 04 21.96143 13 01 03.48 -18 33 22.5                uEH045J95
         K12H08G KC2012 04 21.96418 13 01 03.61 -18 33 05.3          17.9 RuEH045J95
         K12H08G KC2012 04 22.19244 13 01 16.88 -18 10 05.8          18.0 RuEH045H36
         K12H08G KC2012 04 22.19646 13 01 17.06 -18 09 41.8          18.0 RuEH045H36
         K12H08G KC2012 04 22.20057 13 01 17.24 -18 09 17.4          17.9 RuEH045H36
         K12H08G KC2012 04 22.20423 13 01 17.40 -18 08 55.2          17.9 RuEH045H36
         K12H08G  C2012 04 22.36042 13 01 27.04 -17 52 47.4          18.3 RoEH045474
         K12H08G  C2012 04 22.36112 13 01 27.06 -17 52 43.8          18.1 RoEH045474
         K12H08G  C2012 04 22.36183 13 01 27.10 -17 52 39.2          18.0 RoEH045474
         K12H08G  C2012 04 22.36253 13 01 27.14 -17 52 35.4          17.9 RoEH045474
         K12H08G  C2012 04 22.36323 13 01 27.16 -17 52 31.2          18.0 RoEH045474
         K12H08G  C2012 04 22.36394 13 01 27.21 -17 52 26.9          18.1 RoEH045474
    
    Observer details:
    204 Schiaparelli Observatory.  Observer L. Buzzi.  0.38-m f/6.8 reflector
        + CCD.
    474 Mount John Observatory, Lake Tekapo.  Observers A. C. Gilmore,
        P. M. Kilmartin.  Measurer P. M. Kilmartin.  1.0-m f/7.7 reflector + CCD.
    651 Grasslands Observatory, Tucson.  Observer J. E. McGaha.  0.62-m f/5.1
        Newtonian reflector + CCD.
    703 Catalina Sky Survey.  Observer A. Boattini.  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.
    807 Cerro Tololo.  Observers T. Linder, R. Holmes.  0.41-m f/11
        Ritchey-Chretien + CCD.
    E12 Siding Spring Survey.  Observer R. H. McNaught.  Measurers J. D. Ahern,
        E. C. Beshore, A. Boattini, A. R. Gibbs, A. D. Grauer, R. E. Hill,
        R. A. Kowalski, S. M. Larson, R. H. McNaught.  0.5-m Uppsala Schmidt + CCD.
    E23 Arcadia.  Observer A. Hidas.  0.35-m Schmidt-Cassegrain + CCD.
    G48 Doc Greiner Research Obs., Rancho Hildalgo.  Observer M. Mills.  0.40-m
        f/10 Schmidt-Cassegrain + CCD.
    H01 Magdalena Ridge Observatory, Socorro.  Observer W. H. Ryan.  2.4-m f/8.9
        reflector + CCD.
    H36 Sandlot Observatory, Scranton.  Observer G. Hug.  0.56-m reflector + CCD.
    I39 Observatorio Cruz del Sur, San Justo.  Observers A. Chapman, N. D. Diaz.
        0.20-m f/4 reflector + CCD.
    I48 Observatorio El Catalejo, Santa Rosa.  Observer J. Spagnotto.  0.20-m f/5
        reflector + CCD.
    J95 Great Shefford.  Observer P. Birtwhistle.  0.40-m f/6.0 Schmidt-Cassegrain
        + CCD.
    
    Orbital elements:
    2012 HG8                                            PHA, Earth MOID = 0.0043 AU
    Epoch 2012 Mar. 14.0 TT = JDT 2456000.5                 MPC
    M   7.42374              (2000.0)            P               Q
    n   0.25570192     Peri.  256.58990     -0.31016722     -0.91805146
    a   2.4583671      Node   214.80625     +0.94951956     -0.31199613
    e   0.7289312      Incl.   25.63350     -0.04699887     -0.24462201
    P   3.85           H   19.7           G   0.15           U   7
    Residuals in seconds of arc
    120420 703  0.3-  0.3-    120420 J95  0.1+  0.0     120421 H36  0.3+  0.4+
    120420 703  0.1-  0.2-    120420 I39  0.1-  0.1-    120421 H36  0.2+  0.5+
    120420 703  0.0   0.2+    120420 J95  0.1-  0.0     120421 H36  0.1-  0.2+
    120420 703  0.1+  0.2+    120420 807  0.2-  0.2+    120421 474  0.2-  0.3-
    120420 703  0.6-  0.2+    120420 I39  0.9+  0.7-    120421 474  0.0   0.1-
    120420 703  0.1-  0.3+    120420 807  0.1-  0.2-    120421 474  0.1+  0.1-
    120420 703  0.7-  0.3+    120420 807  0.1-  0.2+    120421 474  0.0   0.2-
    120420 703  0.0   0.1+    120420 807  0.1-  0.1+    120421 474  0.3+  0.3-
    120420 474  0.3+  0.1-    120420 I39  0.4+  0.3+    120421 E23  0.8-  0.1+
    120420 474  0.1-  0.0     120421 G48  0.8+  0.0     120421 E23  0.5+  0.6-
    120420 474  0.2+  0.4+    120421 G48  0.7+  0.3-    120421 J95  0.1-  0.0
    120420 474  0.2+  0.2-    120421 G48  0.9+  0.2+    120421 J95  0.3-  0.1+
    120420 E23  0.2+  0.2-    120421 G48  1.1+  0.0     120421 J95  0.3-  0.6+
    120420 E23  0.4+  0.6-    120421 G48  0.9+  0.1+    120422 H36  0.1-  0.0
    120420 E12  0.1-  0.2-    120421 I48  0.1+  0.2-    120422 H36  0.1-  0.0
    120420 E23  0.3-  0.2-    120421 I48  0.1-  0.1+    120422 H36  0.2-  0.1-
    120420 E12  0.2-  0.0     120421 I48  0.3-  0.3-    120422 H36  0.3-  0.2+
    120420 E12  0.3-  0.3-    120421 H01  0.1+  0.2-    120422 474  0.3+  0.0
    120420 E12  0.1+  0.3+    120421 H01  0.0   0.2-    120422 474  0.1+  0.5-
    120420 E12  0.1+  0.4+    120421 651  0.2+  0.1-    120422 474  0.2+  0.1-
    120420 204  0.2-  0.0     120421 651  0.1+  0.2-    120422 474  0.3+  0.4-
    120420 204  0.1-  0.0     120421 651  0.8+  0.4+    120422 474  0.1+  0.3-
    120420 204  0.2-  0.1-    120421 H01  0.0   0.2-    120422 474  0.3+  0.2-
    120420 J95  0.1-  0.2-    120421 H01  0.0   0.2-
    
    Ephemeris:
    2012 HG8                 a,e,i = 2.46, 0.73, 26                  q = 0.6664
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2012 03 23    01 58 06.4 -63 28 07   0.2371  0.9325    67.6    98.8    20.0
    ...
    2012 04 07    12 19 31.5 -63 14 51   0.1720  1.1041   123.0    49.5    17.9
    ...
    2012 04 15    12 51 58.8 -34 11 01   0.2124  1.1975   153.8    21.7    17.8
    ...
    2012 04 21    13 00 06.8 -20 14 18   0.2704  1.2673   164.2    12.5    18.1
    2012 04 22    13 01 05.6 -18 29 04   0.2816  1.2789   164.6    12.1    18.2
    2012 04 23    13 02 00.7 -16 51 48   0.2932  1.2905   164.5    12.0    18.3
    ...
    2012 04 29    13 06 39.8 -09 23 31   0.3688  1.3594   159.9    14.7    19.0
    ...
    2012 05 07    13 11 53.3 -03 27 51   0.4825  1.4500   151.0    19.7    19.9
    ...
    2012 05 22    13 21 40.3 +01 31 44   0.7233  1.6146   136.3    25.7    21.2
    
    A. U. Tomatic                (C) Copyright 2012 MPC           M.P.E.C. 2012-H45
    

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