COMMISSION 27 OF THE I. A. U.
             INFORMATION BULLETIN ON VARIABLE STARS
                         NUMBER 762

                                      Konkoly Observatory
                                      Budapest
                                      1973 January 31

       ON THE PHOTOMETRIC HISTORY OF V 1329 CYGNI = HBV 475

    The photographic and photovisual light curves of V 1329 Cyg
were derived from its magnitude estimates on about 600 plates of
Odessa Observatory, taken in 1957-72. The photographic observations 
were made on ORWO ZU-1 plates with Zeiss objective, the photovisual 
ones on ORWO ZP-1 plates with C-18 filter. The B magnitudes 
of the comparison stars were adopted according to Kohoutek
and Bossen (1), the V magnitudes were determined from the 
photoelectric observations obtained with the 60 cm reflector of the
Sternberg Institute Crimean Station.
    The results are given in the Figure. The observed slow 
increase of the star's brightness from 15.4m to 14.2m during the 
period 1957 to 1963 was followed by a sharp rise to 11.9m in 1964.

                      [FIGURE 1]

During the maximum of brightness long-period variations with a
range of 1 mag. were present, confirmed by photoelectric observations 
in  1969-72 (1-3). Our photoelectric observations  of V 1329
Cyg in photometric system close to UBV are given in the following 
Table.

-------------------------------------------------------------------------
J.D.   n     V      B-V     U-B    J.D.    n     V         B-V      U-B
2441...                            2441...
236.4  1   13.04m  +0.49m  -0.62m  252.4   2   12.96m     +0.56m   -0.60m
237.4  2   12.97   +0.56   -0.56   596.4   2   12.74      +0.22    -1.20
238.4  2   12.98   +0.55   -0.63   597.4   2   12.53      +0.48    -1.17
239.4  3   13.02   +0.54   -0.63   598.4   2   12.51      +0.48    -1.12
240.4  3   12.97   +0.55   -0.59   604.4   2   12.41      +0.50    -1.14
246.4  2   12.96   +0.59   -0.68   605.4   2   12.42      +0.50    -1.10
                                   618.4   2   12.80      +0.36    -0.99
-------------------------------------------------------------------------


V.P. ARHIPOVA                          O.E. MANDEL

Sternberg State Astronomical           Odessa Astronomical
Institute, Moscow                      Observatory


1 Kohoutek, L. and Bossen, H. 1970, ApLetters 6, 157. [BIBCODE 1970ApL.....6..157K ]
2 Chartrand, M.R. and Steinon, F.M., BAAS 2, 186, 1970. [BIBCODE 1970BAAS....2Q.187C ]
3 Bossen, H, 1972, IBVS No. 722. [BIBCODE 1972IBVS..722....1B ]