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IAUC 3409: 1979i

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                                                  Circular No. 3409
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 617-864-5758


COMET MEIER (1979i)
     The following precise positions have been reported:

     1979 UT             R. A. (1950) Decl.        m1    Observer
     Sept. 20.21128   13 34 13.19   +68 34 40.9          Giclas
           21.09129   13 32 17.8    +68 13 50.6          Bulger
           22.17222   13 30 02.82   +67 48 37.7          Giclas
           22.85816   13 28 40.96   +67 32 40.3   13     Birtwhistle
           24.15238   13 26 14.1    +67 03 04.6          Shao
           25.8083    13 23 20      +66 26 06.8   12     Hoffmann

H. L. Giclas (Lowell Observatory).  Measurer: M. L. Kantz.
J. H. Bulger and C.-Y. Shao (Harvard College Observatory, Agassiz
   Station).  Measurer: Shao.  0.4-m astrograph (Sept. 21) and 1.5-m
   reflector (Sept. 24); short tail on latter exposure.
P. Birtwhistle (Woolston Observatory).  Diffuse with condensation,
   tail < 1o.  Communicated by S. W. Milbourn
M. Hoffmann (Hoher List Observatory).  0.3-cm f/5 astrograph.  Tail
   5' long in p.a. 40o.

     The following parabolic orbital elements, by B. G. Marsden,
satisfy four observations Sept. 20-24 within 1":

       T = 1979 Oct. 16.241 ET   Peri. = 111.568
                                 Node  = 297.448   1950.0
       q = 1.44537 AU            Incl. =  67.328

     1979 ET     R. A. (1950) Decl.     Delta     r      m1
     Sept.14    13 50.9     +71 07.6    1.505   1.517   12.1
          19    13 37.03    +69 03.8
          24    13 26.52    +67 06.6    1.510   1.480   12.1
          29    13 18.21    +65 17.2
     Oct.  4    13 11.33    +63 36.0    1.501   1.456   12.0
           9    13 05.38    +62 03.1
          14    12 59.97    +60 38.4    1.477   1.446   12.0
          19    12 54.81    +59 22.0
          24    12 49.63    +58 13.6    1.435   1.450   11.9

     Total visual magnitude estimates: Sept. 21.11 UT, ~ 12.0 (C.
S. Morris, Prospect Hill Observatory, 0.25-m f/7 reflector, 70 x);
24.03, 12.0, coma diameter ~ 1'.4 (J. E. Bortle, Brooks Observatory,
0.32-m reflector); 24.10, 12.1, coma diameter ~ 1' (Morris).


1979 September 27              (3409)              Brian G. Marsden

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