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IAUC 2228: 1969i; (887)

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IAUC number 

                                                  Circular No. 2228
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 BENNETT (1969i)
     Mrs. Betty Mintz, U.S. Naval Observatory, Washington, has measured
the following precise positions from plates obtained by A.
Gomez, Cerro Tololo Interamerican Observatory.  The March 6 plates
are of inferior quality.

     1970 UT             R. A. (1950) Decl.
     Feb. 28.03476    22 35 21.56   -47 04 05.6
     Mar.  1.01392    22 33 18.58   -46 21 10.6
           1.02434    22 33 17.20   -46 20 42.2
           3.01045    22 29 06.72   -44 44 43.2
           3.01392    22 29 06.21   -44 44 32.4
           4.00698    22 27 01.18   -43 51 23.7
           4.01045    22 27 00.66   -43 51 12.6
           6.00073    22 22 52.07   -41 52 58.0
           6.00351    22 22 51.61   -41 52 45.1

     Dr. B. Westerlund, European Southern Observatory, reports:
"Observations by F. Dossin show that both the head and tail contain
a fair amount of dust.  Emissions also appear, including OH+, CH+
and CO+.  The new (1-1) band of CN, discovered in comet 1969g [Sky
Telesc. (1970) 39, 152], is again clearly visible.  Other features
are the normal CN, C2, CH, C3, NH and Na emissions."

     Recent visual estimates (all with 7 x 50 binoculars) are:

     1970 UT       Mag.        Tail         Observer
     Mar. 10.77     2.3     4o, p.a. 210o   M. V. Jones (Queensland)
          13.78     1.7     4o              V. L. Matchett (Queensland)
          25.40   < 1.5   > 1o (twilight)   B. G. Marsden (Massachusetts)


(887) ALINDA
     Mr. P. Wild, Astronomical Institute, Berne, provides the following
precise positions (the means from several exposures):

     1970 UT             R. A. (1950) Decl.
     Jan.  3.8771      3 24 03.62   + 4 57 02.1
           6.8757      3 31 54.16   + 7 45 39.1


1970 March 26                  (2228)              Brian G. Marsden

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