Central Bureau for Astronomical Telegrams

IAUC 4217: 1986e

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                                                  Circular No. 4217
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
TWX 710-320-6842 ASTROGRAM CAM    Telephone 617-495-7244/7440/7444


COMET MACHHOLZ (1986e)
     The following precise positions have been reported:

   1986 UT           R.A.  (1950.0)   Decl.     m1    Observer

   May  13.43889    0 34 05.29   +39 12 12.7          Bus
        13.45486    0 33 58.40   +39 12 48.3            "
        13.72101    0 32 06.39   +39 22 35.4   11.0   Watanabe
        13.74022    0 31 57.87   +39 23 18.1            "
        14.74931    0 24 40.02   +40 00 08.3   10.7   Seki
        14.77622    0 24 28.21   +40 01 08.6            "
        15.42819    0 19 35.24   +40 24 28.3          Balam
        15.46493    0 19 18.33   +40 25 49.7          Tatum

S. J. Bus (Lowell Observatory, Anderson Mesa Station).  0.33-m
   photographic telescope.  Measurer: E. L. G. Bowell.
K. Watanabe and H. Kaneda (JCPM Sapporo Station).  0.16-m Schmidt
   telescope.  Measured by K. Watanabe.  Communicated by S. Nakano.
T. Seki (Geisei).  Comet diffuse with some condensation.
D. D. Balam and J. B. Tatum (University of Victoria).  Measurer:
   Balam.  Comet diffuse and uncondensed (especially on 15.46493).

     Parabolic elements from 7 observations May 13-15:

          T = 1986 Apr. 24.462 ET  Peri. =  20.859
                                   Node  =  89.334   1950.0
          q =   0.14441 AU         Incl. =  76.348

     1986 ET     R.A. (1950.0) Decl.      p        r       m1

     May  12     0 43.91    +38 18.4
          14     0 30.10    +39 32.9    0.680    0.683    10.0
          16     0 15.18    +40 44.9
          18    23 58.87    +41 53.9    0.620    0.785    10.4
          20    23 40.87    +42 58.6
          22    23 20.89    +43 56.9    0.565    0.882    10.7
          24    22 58.67    +44 45.4
          26    22 34.06    +45 19.7    0.519    0.974    11.0
          28    22 07.09    +45 34.4
          30    21 38.05    +45 23.6    0.483    1.064    11.2
     June  1    21 07.58    +44 41.8
           3    20 36.57    +43 25.3    0.461    1.150    11.4
           5    20 06.06    +41 33.5
           7    19 37.05    +39 09.5    0.457    1.233    11.7


1986 May 15                    (4217)              Brian G. Marsden

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