COMMISSION 27 OF THE I. A. U.
         INFORMATION BULLETIN ON VARIABLE STARS
                     Number 1519

                                 Konkoly Observatory
                                 Budapest
                                 1978 December 20



         UBVRI OBSERVATIONS OF NOVA CYGNI 1978


     Photoelectric observations of Nova Cygni 1978 (alpha_1950 =
21h40.6m, delta_1950 = 43d48') were obtained during seven nights in
September and October, 1978, with the 61-cm reflecting telescope
at the David Dunlap Observatory, Richmond Hill. Observations
were made with a dry-ice cooled S20 photomultiplier and Schott
glass filters to reproduce the Johnson UBVRI system, as described 
by Fernie (1974) HR 8252 was used as a comparison star for
all observations. The results are presented in Table I. Errors
are believed to be about +-0.02 magnitudes.



                    Table I
----------------------------------------------
J.D.          V       U-V    B-V    V-R    V-I
----------------------------------------------
2443764.73   6.31   +0.51  +0.68  +0.64  +1.11
     64.79   6.33   +0.46   0.66   0.64   1.10
     68.73   7.02   -0.08   0.36   0.93   1.49
     74.53   8.02   -0.30   0.34   0.99   1.24
     77.55   8.33   -0.32   0.25   1.08   1.27
     80.69   8.68   -0.33   0.27   1.22   1.32
     86.52   9.00   -0.41   0.21   1.26   1.33
     92.70   9.71   -0.57   0.11   1.91   1.72
----------------------------------------------


                                  JAMES K. deROUX
                                  David Dunlap  Observatory
                                  Richmond Hill
                                  Canada


Reference:

Fernie, J.D. 1974 P.A.S.P., 86, 837 [BIBCODE 1974PASP...86..837F ]