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IAUC 2297: 1970q; 1970n; 1969i

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IAUC number 

                                                  Circular No. 2297
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 VAISALA 1 (1970q)
     Dr. Elizabeth Roemer, University of Arizona, reports that she
and R. A. McCallister have recovered this comet with the Steward
Observatory's 229-cm reflector on Kitt Peak.  The comet is of stellar
appearance and the magnitude somewhat uncertain due to clouds.
Position and motion are consistent with the prediction (IAUC 2291).

     1970 UT             R.A. (1950) Decl.        m2
     Dec. 25.30839    6 27.08      +12 27.8      21.0
          25.35272    6 27.04      +12 27.9


COMET CHURYUMOV (1970n)
     Kiev. Komet. Tsirk. No. 112 gives additional information about
the cometary object reported by K. I. Churyumov during a visit to
the Abastumani Observatory (cf. IAUC 2290).  The object, of magnitude
8 to 8.5, was first noted on Nov. 21.7 UT in the general vicinity
of mu and nu Oph and zeta and eta Ser, but the position could not be
measured due to clouds.  On Nov. 22.7 the object was observed for
about an hour and an approximate position determined: the field was
also compared with the Lick photographic atlas.  Clouds prevented
any observations the next night.  There was considerable interference
from clouds on Nob. 24.7 also, but it was clear that no diffuse
object appeared at the position occupied by the object two nights
before.  The position reported for Nov. 24.7 is to be rejected,
a group of faint stars having been mistaken for the comet.
Several unfavorable nights followed, but a wide search of the area
on Nov. 30 did not reveal any comet.


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

     1970 UT             R.A. (1950) Decl.        Observer
     July 31.93333    4 44 08.91   +75 53 27.7    Antal
     Oct. 27.81421   23 03 39.64   +74 52 15.3    Mrkos

M. Antal (Skalnate Pleso Obs.).  A. Mrkos (Klet Observatory).


1970 December 31               (2297)              Brian G. Marsden

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