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IAUC 2264: 1970i; 1970g; 1968g

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IAUC number 

                                                  Circular No. 2264
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 DU TOIT-NEUJMIN-DELPORTE (1970i)
     Mr. Charles T. Kowal, California Institute of Technology,
telegraphs that he has recovered this comet with the 122-cm Schmidt
telescope at Palomar, as follows:

     1970 UT          R. A. (1950) Decl.     Mag.
     July  6.22259   15 13.45    -13 18      19
           7.24288   15 13.7     -13 21      19

The object is diffuse, with little condensation and no tail.  The
indicated correction to the central ephemeris on IAUC 2222 is dR.A. =
+0m.2, dDecl. = -3'.  The recovery also indicates that the 1958 prediction
by A. S. Socilina (cf. UAIC 1628, 1650) required a correction
Delta-T = +4 days, with the comet magnitude 16-17 at its brightest.


COMET ABE (1970g)
     Dr. G. Van Biesbroeck, Lunar and Planetary Laboratory, communicates
the following precise positions, obtained with the 154-cm reflector.
There is a round, diffuse coma without sharp nucleus.

     1970 UT             R. A. (1950) Decl.        Mag.
     July  7.45512     2 18 46.58   +24 53 57.7    10
           7.46831     2 18 46.69   +24 54 14.0

     Mr. Karl Simmons, observing with a 21-cm reflector (40x) at
Switzerland, Florida, on July 12.4, estimated the magnitude as 10.5
+/- 0.3.  There was a coma 3'.5 in diameter with a bright central
condensation of 10" to 15".  No tail was visible.


PERIODIC COMET COMAS SOLA (1968g)
     Mr. T. Urata, Nihondaira Observatory, Shimizu, Shizuoka,
provides the following precise position, obtained with a 10.2-cm f/5.5
refractor.  The comet, of diameter 0'.4, had a tail 5' long.

     1970 UT             R. A. (1950) Decl.        Mag.
     Feb.  2.59426    11 45 51.58   +27 58 37.5    13


1970 July 15                   (2264)              Brian G. Marsden

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