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IAUC 2904: 1975p; R CrB

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                                                  Circular No. 2904
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 BRADFIELD (1975p)
     The following precise positions have been reported:

     1975/76 UT          R. A. (1950) Decl.        m1    Observer
     Dec.  8.08889    15 47 00.60   -45 27 55.7          Hers
     Jan.  1.37882    19 05 03.8    - 0 40 33      7.4   Seki
           1.38247    19 05 05.4    - 0 40 08              "
           2.73959    19 13 19.78   + 1 42 29.2          Codina
           2.74411    19 13 22.02   + 1 43 07.5            "
           7.36632    19 41 59.83   + 9 22 58.8    7.5   Urata
           7.36713    19 42 00.14   + 9 23 00.5            "
           8.73692    19 50 42.4    +11 31 51      8     Milet
           8.73830    19 50 43.1    +11 31 56              "

J. Hers (Randburg, near Johannesburg).  20-cm reflector.
T. Seki (Kochi Observatory, Geisei Station).  40-cm reflector.
J. M. Codina (Fabra Observatory, Barcelona).  Computer: N. Torras.
T. Urata (JCPM Yakiimo Station).  Long. = -138o27'51", Lat. = +34o57'22"
   (correction to IAUC 2896).  From Nihondaira Obs. Circ. No. 722.
B. Milet (Nice Observatory).

     R. L. Waterfield, Woolston Observatory, writes that a photograph
taken in fairly bright twilight on Jan. 3.75 UT shows the
main tail about 6' long in p.a. 10o and an antitail (nearly as
bright as the main tail at its root) about 3' long in p.a. 165-170o.

     Selected total visual magnitude estimates: 1975 Dec. 31.72 UT,
6.7 (S. Furia, Varese, Italy, 7 x 50 binoculars); 1976 Jan. 2.72,
6.5 (Furia); 9.10, 8.0 (M. J. Mayo and J. Truxton, Agoura, California,
25-cm reflector); 10.97, 7.9 (J. Bortle, Brooks Observatory,
15 x 80 binoculars); 12.02, 8.4 (C. Sherrod, North Little Rock,
Arkansas, 15-cm refractor); 14.02, 8.7 (Sherrod); 14.94, 8.8 (S.
O'Meara, Harvard College Observatory, 6-cm finder).

     Corrigendum.  On IAUC 2869, the observer on Nov. 13 should
have been P. Jekabsons, not C. Jekabsons.


R CORONAE BOREALIS
     Visual magnitude estimates: 1975 Dec. 17.4 UT, 10.5 (J. Bortle,
Brooks Observatory); 29.17, 8.8 (M. Cavagna, Sesto San Giovanni,
Italy); 30.17, 8.9 (R. Lukas, Wilhelm Foerster Observatory).


1976 January 16                (2904)              Brian G. Marsden

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