COMMISSION 27 OF THE I. A. U.
        INFORMATION BULLETIN ON VARIABLE STARS
                    Number 2178

                                Konkoly Observatory
                                Budapest
                                1982 July 20

                                HU ISSN 0374-0676




        THE PHOTOMETRIC CONSTANCY OF 59 PISCIUM




  59 Psc was first reported as a suspected Delta Scuti star by
Seeds and Yanchak (1972) and was confirmed by Gupta and Bhatnagar
(1972) with a period of 0.1040 day and amplitude of 0.04 mag in
V. The observations were made in two nights 48 days apart with
time of observation of 5 hours and 3 hours, respectively. HR 217
was used as comparison star. Gupta and Bhatnagar suggested the
presence of beating due to the variation in the amplitude of
their light curves. Later, this star was reobserved by Breger
and. Warman (1973) but no variability could be found from their
observations, however, they suggested that it would be interesting 
to check the behavior of this star in a later date.
  More differential photoelectric photometry of 59 Piscium
(HR 214) was made by us during four nights in September 1980
with the 32 inch telescope of Observatorio Astronomico Nacional
(San Pedro Martir, Baja California, Mexico). A refrigerated
1P21 photomultiplier and Johnson's V filter were used. The
sequence C_1, V_1, C_2 was followed uninterruptedly, each night.
The reductions were made with the method reported by Gonzalez
and Pena (1981) and the probable error in a single observation,
estimated from the comparison stars was +- 0.003 mag. The 
observational details are given in Table I.
  In the nights observed, no variability could be found for 59
Psc and the standard deviation calculated for this star and for
the difference in magnitudes of the comparison stars was the
same in each night (Table II).

                             Table I

                  Characteristics of the observed stars
Star     M_V  Spectrum   alpha(1980)  delta(1980)  Character
59 Psc   6.01    A5      0h46m10s      +19d28'     Suspected Var.
HR 217   6.45    dF6     0h46m51s      +20d49'     Comparison
HR 254   5.7     A1V     0h53m31s      +19d05'     Comparison

                 Table II
Characteristics of the nights observed
  Date                           Standard
Sept.1980   Time observed        Deviation
 (U.T.)        Hrs.                Mags.
   25          4.9                +-0.005
   26          2.0                +-0.004
   27          7.5                +-0.003
   28          7.4                +-0.003



These results indicate that 59 Psc was a constant star for these
dates and confirm the result of Breger and Warman (1973) about
the constancy of this star. However, the light curves detected
by Gupta and Bhatnagar in 1972 have evident variation, hence,
it is possible to think that 59 Psc stopped its pulsations for
some reason and, like Breger and Warman suggested, it would be
interesting to determine continuously the behavior of this star
in later dates.

            S.F. GONZALEZ-BEDOLLA

            Universidad Nacional Autonoma de Mexico
            Apdo. Postal 70-264
            Mexico 20, D.F., Mexico





References:    

Breger, M. and Warman, J., 1973 Inf. Bull. Var. Stars No. 837
Gonzalez-Bedolla, S.F. and Pena, J.H., 1981 
    Inf. Bull. Var. Stars No. 2008
Gupta, S.K. and Bhatnagar, A.K., 1972 
    Inf. Bull. Var. Stars No. 751
Seeds, A.M. and Yanchak, A.G. 1972 in The delta Scuti Stars,
    The Franklin Institute [BIBCODE 1972dssa.book.....S ]