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  • MPEC 2012-H87 : 2012 HK31

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    M.P.E.C. 2012-H87                                Issued 2012 Apr. 29, 15:06 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 HK31
    
    Observations:
         K12H31K* C2012 04 28.28624 14 15 24.76 -16 44 19.5          20.9 VrEH087G96
         K12H31K  C2012 04 28.29307 14 15 23.72 -16 44 05.4          20.6 VrEH087G96
         K12H31K  C2012 04 28.30000 14 15 22.64 -16 43 51.2          20.0 VrEH087G96
         K12H31K  C2012 04 28.30692 14 15 21.60 -16 43 36.9          20.6 VrEH087G96
         K12H31K  C2012 04 28.37399 14 15 11.34 -16 41 15.6          20.9 VrEH087G96
         K12H31K  C2012 04 28.37539 14 15 11.16 -16 41 13.0          20.3 VrEH087G96
         K12H31K  C2012 04 28.37678 14 15 10.90 -16 41 09.6          20.7 VrEH087G96
         K12H31K  C2012 04 28.37817 14 15 10.72 -16 41 07.0          20.4 VrEH087G96
         K12H31K mC2012 04 28.38500 14 15 09.77 -16 40 52.0                oEH087291
         K12H31K mC2012 04 28.38653 14 15 09.55 -16 40 48.8                oEH087291
         K12H31K mC2012 04 28.38804 14 15 09.32 -16 40 45.3                oEH087291
         K12H31K KC2012 04 29.30933 14 13 26.50 -16 08 13.7          19.8 RoEH087291
         K12H31K KC2012 04 29.31039 14 13 26.35 -16 08 11.5          20.2 RoEH087291
         K12H31K KC2012 04 29.31144 14 13 26.16 -16 08 09.0          19.8 RoEH087291
         K12H31K  C2012 04 29.32104 14 13 24.52 -16 07 48.2          21.0 VrEH087G96
         K12H31K  C2012 04 29.32311 14 13 24.16 -16 07 43.8          21.0 VrEH087G96
         K12H31K  C2012 04 29.32521 14 13 23.84 -16 07 38.9          20.3 VrEH087G96
         K12H31K  C2012 04 29.32727 14 13 23.52 -16 07 34.5          20.5 VrEH087G96
    
    Observer details:
    291 LPL/Spacewatch II.  Observers R. S. McMillan, T. H. Bressi.  1.8-m f/2.7
        reflector + CCD.
    G96 Mt. Lemmon Survey.  Observers A. Boattini, R. E. Hill.  Measurers
        E. C. Beshore, A. Boattini, A. R. Gibbs, A. D. Grauer, R. E. Hill,
        R. A. Kowalski, S. M. Larson, R. H. McNaught.  1.5-m reflector + CCD.
    
    Orbital elements:
    2012 HK31                                                Earth MOID = 0.0145 AU
    Epoch 2012 Mar. 14.0 TT = JDT 2456000.5                 MPC
    M 231.53170              (2000.0)            P               Q
    n   0.88713705     Peri.   96.77831     +0.76899486     +0.63868176
    a   1.0726933      Node   223.53277     -0.60093254     +0.70780784
    e   0.1217631      Incl.    2.25199     -0.21800684     +0.30181727
    P   1.11           H   25.7           G   0.15           U   9
    Residuals in seconds of arc
    120428 G96  0.2-  0.3-    120428 G96  0.4-  0.4+    120429 291  0.4+  0.2-
    120428 G96  0.0   0.1-    120428 G96  0.0   0.0     120429 291  0.1+  0.0
    120428 G96  0.2-  0.1-    120428 291  0.0   0.1-    120429 G96  0.1-  0.2+
    120428 G96  0.2+  0.0     120428 291  0.1+  0.2-    120429 G96  0.5-  0.0
    120428 G96  0.1-  0.4+    120428 291  0.1+  0.1+    120429 G96  0.3-  0.3+
    120428 G96  0.3+  0.0     120429 291  0.1+  0.1-    120429 G96  0.2-  0.1+
    
    Ephemeris:
    2012 HK31                a,e,i = 1.07, 0.12, 2                   q = 0.9421
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2012 03 30    14 35 01.6 -23 11 47   0.1657  1.1386   145.1    30.1    23.4
    ...
    2012 04 14    14 33 17.0 -21 54 02   0.1153  1.1122   160.3    17.7    22.2
    ...
    2012 04 22    14 25 26.0 -19 39 30   0.09294 1.0970   170.3     8.9    21.3
    ...
    2012 04 28    14 15 56.1 -16 52 38   0.07844 1.0852   176.9     2.9    20.6
    2012 04 29    14 14 03.1 -16 17 58   0.07621 1.0832   176.6     3.2    20.6
    2012 04 30    14 12 04.9 -15 41 08   0.07404 1.0812   175.6     4.1    20.6
    ...
    2012 05 06    13 58 25.1 -11 07 51   0.06205 1.0690   165.7    13.5    20.6
    ...
    2012 05 14    13 34 30.5 -02 07 06   0.04895 1.0527   148.5    30.1    20.6
    ...
    2012 05 29    12 21 55.0 +26 45 41   0.03457 1.0225   104.0    74.1    21.0
    
    A. U. Tomatic                (C) Copyright 2012 MPC           M.P.E.C. 2012-H87
    

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