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IAUC 2213: 1970c; 1969i

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IAUC number 

                                                  Circular No. 2213
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


PERIODIC COMET KOPFF (1970c)
     Dr. Elizabeth Roemer, Lunar and Planetary Laboratory, reports
that this comet has been reobserved, as follows:

     1970 UT         R.A. (1950) Decl.     Mag.
     Feb.  7.475     13 37.5   - 4 23      19.6
          13.406     13 40.4   - 4 22      19.5

The comet is essentially stellar in appearance and close to the
prediction by G. Sitarski on IAUC 2183.  The Feb. 7 observation was
made using the 154-cm reflector at the Catalina station; Robert
Elliot assisted.  The Feb. 13 observation was made using the
Steward Observatory's 229-cm reflector at Kitt Peak.


COMET BENNETT (1969i)
     The following precise positions have been reported:

     1970 UT             R.A. (1950) Decl.       Observer
     Jan.  6.81389    0 28 25.89   -64 22 54.3   Bateman
          14.79514    0 04 00.4    -62 38 46       "
          21.03773   23 48 21.86   -61 07 23.3   Pereyra
          21.03843   23 48 21.88   -61 07 23.4     "
          21.03912   23 48 21.72   -61 07 22.5     "
          30.03218   23 29 35.36   -58 44 32.8   Rodriguez
          30.03304   23 29 35.31   -58 44 34.4     "
          30.03420   23 29 35.07   -58 44 32.7     "
          30.03490   23 29 35.04   -58 44 32.8     "

F. de J. Bateman (Berario, Johannesburg).  Nikon F camera, 400 mm
   f/6.3 lens.  Measured by Bateman at the Republic Observatory.
Z. M. Pereyra and J. J. Rodriguez (Cordoba Observatory for the
   CNEGH).  33-cm astrograph.  Measurer: Miss B. Oviedo.  The
   isophote of magnitude 15.5 per square minute has a mean diameter of
   20', i.e. 1.3 x 10**6 km, on plates taken at Bosque Alegre between
   Jan. 30 and Feb. 1.  Yellow-red plates, minus blue filter,
   showed only a tenuous parabolic envelope around the nucleus,but
   no tail.  In early February the blue tail was about 2o long.


1970 February 17               (2213)              Brian G. Marsden

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