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IAUC 2260: 1970g; 1970d; 1968 AA

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IAUC number 

                                                  Circular No. 2260
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 ABE (1970g)
     Prof. M. Huruhata, Director of the Tokyo Observatory, cables
that a new comet has been discovered by Abe.  The following positions
have been obtained by the discoverer (who described the comet
as diffuse, without condensation) and by T. Seki, Kochi (who
observed a central condensation):

     1970 UT          R. A. (1950) Decl.    Mag.    Observer
     July  3.72917    2 17.0     +23 24      9      Abe
           4.71528    2 17.0     +23 48      9        "
           5.72292    2 18.0     +24 18      9        "
           5.79492    2 18.2     +24 18     10      Seki


PERIODIC COMET D'ARREST (1970d)
     The following positions have been reported:

     1970 UT             R. A. (1950) Decl.       Mag.   Observer
     May   7.46092    23 30 32.17   -  0 09 20.3  17.9   Roemer
     June  1.77056     1 09 06      +  4 04.7     13     Seki
           1.77854     1 09 08      +  4 04.7              "
           7.45072     1 29 54.59   +  4 49 28.0         Roemer

E. Roemer  (University of Arizona).  May 7 (with R. McCallister):
   229-cm Steward Observatory reflector, Kitt Peak; cometary image
   quite soft and diffuse.  June 7 (with R. C. Elliott): 154-cm
   Lunar and Planetary Laboratory reflector, Catalina.  Measurer:
   B. Schreur.
T. Seki (Kochi Observatory).  From Yamamoto Circ. No. 1721.


1968 AA
     Dr. Elizabeth Roemer, Lunar and Planetary Laboratory, reports
that the magnitude derived from the well-centered June 7 plates
(cf. IAUC 2255) is 17.2.  This suggests that the object should be
two magnitudes brighter than given in the new ephemeris; alternatively,
the magnitude is subject to substantial variations.


1970 July 6                    (2260)              Brian G. Marsden

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