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  • MPEC 1996-W01 : 1984 BC

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    M.P.E.C. 1996-W01                                Issued 1996 Nov. 16, 17:36 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.
    
                 BMARSDEN@CFA.HARVARD.EDU or GWILLIAMS@CFA.HARVARD.EDU
    
                                        1984 BC
    
    Observations:
         J84B00C  C1996 11 13.09213 09 03 03.28 +06 25 31.3          20.0 V      599
         J84B00C  C1996 11 13.10255 09 03 04.15 +06 25 30.8                      599
         J84B00C  C1996 11 14.08183 09 04 34.83 +06 23 37.5          19.8 V      599
         J84B00C  C1996 11 14.08877 09 04 35.54 +06 23 36.7                      599
         J84B00C  C1996 11 14.09660 09 04 36.30 +06 23 35.8                      599
    
    Observer details:
    599 Astronomical Observatory, Campo Imperatore.  Observers A. Boattini,
        A. Di Paola, F. Pedichini, A. Di Clemente.  Measurers A. Boattini, G. Forti.
        0.60-m  f/3 Schimdt + CCD
    
    First and last observations above in comparison with prediction:
    Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
    961113 599 0.27- 0.03-    961114 599 0.28- 0.03-    MPC  9430   +0.59 day
    
    Orbital elements:
    1984 BC
    Id. A. Boattini (1996 observations)
    Epoch 1996 Nov. 13.0 TT = JDT 2450400.5                 Williams
    M 339.53511              (2000.0)            P               Q
    n   0.15103760     Peri.   43.79478     -0.95636717     -0.07854981
    a   3.4920410      Node   129.49163     +0.03467844     -0.98689136
    e   0.5347293      Incl.   21.38633     +0.29010213     -0.14098004
    P   6.53           H   16.0           G   0.15           U   2
    Residuals in seconds of arc
    840130 675  0.9+  1.0-    840226 675  0.5+  1.6+    961113 599  0.7+  0.8+
    840208 675  1.0+  0.1+    840226 675  0.2-  0.1-    961113 599  0.6-  1.5+
    840208 675  0.1-  0.4+    840303 801  0.9-  0.0     961114 599  1.0-  0.7-
    840210 675  0.2-  0.2-    840402 801  0.4+  0.2+    961114 599  0.1+  0.7-
    840211 675  0.8-  0.2-    840421 675  0.6-  0.4-    961114 599  0.8+  0.8-
    840221 675  0.2-  0.5-    840525 801  0.2+  0.3-
    
    Ephemeris:
    1984 BC                  a,e,i = 3.49, 0.53, 21                  q = 1.6247
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    1996 11 13    09 02.91   +06 25.7    1.737    2.067    94.6    28.5    20.0
    1996 11 23    09 18.08   +06 12.5    1.579    2.014   100.9    28.8    19.8
    1996 12 03    09 32.57   +06 15.7    1.426    1.963   107.6    28.6    19.5
    1996 12 13    09 46.19   +06 42.8    1.281    1.914   114.7    27.9    19.2
    1996 12 23    09 58.72   +07 42.3    1.146    1.867   122.3    26.4    18.8
    1997 01 02    10 09.91   +09 24.1    1.024    1.823   130.6    24.2    18.5
    1997 01 12    10 19.45   +11 58.0    0.917    1.783   139.5    21.0    18.1
    1997 01 22    10 27.05   +15 30.0    0.828    1.746   148.8    17.0    17.7
    1997 02 01    10 32.55   +19 57.4    0.760    1.713   157.6    12.7    17.3
    1997 02 11    10 35.97   +25 03.3    0.717    1.685   162.6    10.1    17.1
    1997 02 21    10 37.83   +30 14.9    0.698    1.662   159.8    11.9    17.0
    1997 03 03    10 39.12   +34 53.9    0.703    1.644   151.7    16.6    17.2
    1997 03 13    10 41.11   +38 29.9    0.727    1.632   142.6    21.7    17.4
    1997 03 23    10 45.15   +40 48.6    0.766    1.626   134.1    26.1    17.7
    1997 04 02    10 51.99   +41 51.3    0.817    1.625   126.6    29.6    17.9
    1997 04 12    11 01.78   +41 46.0    0.877    1.631   120.2    32.1    18.1
    1997 04 22    11 14.26   +40 44.0    0.944    1.643   114.8    33.7    18.4
    1997 05 02    11 28.78   +38 56.4    1.016    1.660   110.2    34.7    18.6
    1997 05 12    11 44.74   +36 32.4    1.094    1.682   106.1    35.2    18.8
    1997 05 22    12 01.65   +33 41.0    1.177    1.710   102.4    35.3    19.0
    1997 06 01    12 19.10   +30 29.8    1.266    1.742    99.0    35.1    19.2
    1997 06 11    12 36.83   +27 05.4    1.362    1.779    95.8    34.6    19.4
    1997 06 21    12 54.70   +23 33.9    1.464    1.819    92.5    33.9    19.5
    1997 07 01    13 12.61   +20 00.3    1.574    1.863    89.3    33.1    19.7
    1997 07 11    13 30.53   +16 28.7    1.690    1.909    85.9    32.1    19.9
    1997 07 21    13 48.46   +13 02.7    1.813    1.958    82.4    31.0    20.1
    1997 07 31    14 06.37   +09 44.8    1.942    2.009    78.8    29.7    20.2
    1997 08 10    14 24.32   +06 37.0    2.078    2.062    75.0    28.3    20.4
    1997 08 20    14 42.30   +03 40.9    2.218    2.116    71.0    26.9    20.6
    1997 08 30    15 00.32   +00 57.4    2.361    2.171    66.8    25.3    20.7
    1997 09 09    15 18.39   -01 33.0    2.507    2.228    62.4    23.6    20.8
    1997 09 19    15 36.52   -03 49.9    2.654    2.285    57.9    21.9    21.0
    
                           (Last issue was M.P.E.C. 1996-V05)
    
    Gareth V. Williams           (C) Copyright 1996 MPC           M.P.E.C. 1996-W01
    

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