COMMISSION 27 OF THE I. A. U.
         INFORMATION BULLETIN ON VARIABLE STARS
                     Number 2443

                                         Konkoly Observatory
                                         Budapest
                                         9 December 1983

                                         HU ISSN 0374-0676



            REMARKS ON THREE VARIABLE STARS



V 781 Tau

First elements derived by the author (I.B.V.S. No. 1942) were found to be
inaccurate. New investigations on Sonneberg Sky-Patrol plates and a revision
of the former observations yielded the improved elements for the interval
J.D. 2433100 - 2444000:

      Min. (hel.) = J.D. 2443874.954 + 0.3449100d * E     (EW)
                (8.9m-9.3m/9.3m ph.)

Observed minima:

J.D.(hel.)           Epoch       O-C         Observer
--------------------------------------------------------------
2432881.460          -31873.5   -0.005d      Berthold, T.
  33950.515          -28774     + .001
  34775.368          -26382.5   + .002
  35540.371          -24164.5   - .005
  36610.285          -21062.5   - .002
    957.442          -20056     + .003
  38088.397          -16777     - .002
    440.378          -15756.5   - .002
  39536.327          -12579     - .004
  40981.332           -8389.5     .000
  41329.345           -7380.5   - .001
    330.381           -7377.5   + .001
    337.279           -7357.5     .000
  42839.363           -3002.5   + .001
  43853.911(pe)         -61     - .003        Harris, A.W.
    874.954(pe)           0       .000        (I.B.V.S. No.1556)
--------------------------------------------------------------

Three photoelectric times of minima obtained by Diethelm, R. (BBSAG Bull. No.
53) might indicate a decrease of the period after J.D.2444000. Further 
photoelectric observations are badly needed because of the lack of Sky-Patrol 
plates after J.D.2444000.


NSV 00171

NSV 00171 = Wr 63 was announced as a possible Cepheid by Weber, R. (1958,
J.O. 41.4).
Estimates on 158 Hartha Sky-Patrol plates (1959-1976) confirmed the 
variability.

First elements could be derived:

       Max. = J.D. 2439033.579 + 3.909691d*E             (C)
              (11.71-12.14 ph., M-m=0.25P)


BD +63d0003

This star has been reported to be variable by Guinan, E.F. et al. (I.B.V.S.
No. 2227).
The variations of BD +63d0003 were examined on 615 Hartha and Sonneberg
Sky-Patrol plates from 1959-1982.
During this time slow waves with a mean period of 310d and variable amplitudes
of 0.3m - 0.9m ph. were found. The total amplitude was 10.1m - 11.1m ph.
Because of temporary irregularities, BD +63d0003 seems to be a SRb star.





                       THOMAS BERTHOLD
                     Bruno-H.-Burgel-Sternwarte
                     DDR-7302 Hartha