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IAUC 2916: 1975n; 1976a; 1975p

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IAUC number 

                                                  Circular No. 2916
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Cable Address: SATELLITES, NEWYORK
Western Union: RAPID SATELLITE CAMBMASS


COMET WEST (1975n)
     The following observations have been reported: Feb. 22.05 UT,
m1 = -1 (R. Keen and G. Emerson, Boulder, Colorado, naked eye and
7 x 50 binoculars); 22.09, no magnitude given (C. Townsend, Oxnard,
California); 23.05, m1 = -1, tail 7' long (Keen and Emerson).


COMET BRADFIELD (1976a)
     The following precise positions have been reported:

     1976 UT             R. A. (1950) Decl.        m1    Observer
     Feb. 21.44514     2 03 20.86   -32 07 29,5   10     Herald
          21.77500     2 04 46.98   -31 54 21.8   10     Hers

D. Herald (Kambah, near Canberra).  Diffuse without condensation.
J. Hers (Randburg, near Johannesburg).  Diffuse without condensation;
   image faint, uncertainty 5".  Communicated by J. Churms.


COMET BRADFIELD (1975p)
     The following precise positions have been reported:

     1975/76 UT          R. A. (1950) Decl.        m1    Observer
     Dec.  6.33716    15 24 50.15   -46 54 05.0          Torres
           7.33613    15 37 36.71   -46 07 35.8            "
     Jan. 12.74426    20 16 47.53   +17 27 51.5          Codina
          12.75919    20 16 53.35   +17 29 08.1            "
          14.74719    20 30 08.05   +20 12 56.1            "
          14.75726    20 30 12.33   +20 13 46.1            "
          25.78609    21 45 30.23   +32 24 21.1    9.0   South

C. Torres (University of Chile, Cerro El Roble Station).  Maksutov
   astrograph.  Narrow tail (50' long on Dec. 6, 80' Dec. 7).
J. M. Codina (Fabra Observatory, Barcelona).  Computer: N. Torras.
R. H. S. South (Woolston Observatory).  Measurer: R. L. Waterfield.
   Inner coma 60" in diameter, outer coma 2'.5.  Main tail extremely
   faint, broad and diffuse, p.a. ~ 15o; no antitail (IAUC 2904).

     Further total visual magnitude estimates: Jan. 30.13 UT, 10.9
(D. Machholz, Concord, California, 25-cm reflector); Feb. 3.01,
10.5 (J. Bortle, Brooks Observatory, 32-cm reflector); 3.15, 11.0:
(Machholz); 5.01, 10.9 (Bortle; coma diameter 1'.3 in moonlight).


1976 February 24               (2916)              Brian G. Marsden

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