COMMISSION 27 OF THE I. A. U.
            INFORMATION BULLETIN ON VARIABLE STARS
                       Number 2741

                                      Konkoly Observatory
                                      Budapest
                                      7 June 1985

                                      HU ISSN 0374 - 0676

        PERIOD CHANGE IN THE ECLIPSING BINARY GK CEPHEI

  The Cracow yearbook for 1985 (Rudnicki, 1984) remarks that observations
of GK Cephei are needed to determine the current elements. The following
photoelectric timings have been made by members of the BAA Variable Star
Section. The column O-C1 gives residuals against the previous elements
(Dworak, 1975)

       Min I = 2438694.7063 + 0.936157d E

and the column O-C2 is against the revised elements

       Min I = 2441946.9191 + 0.936170d E.

Hel. J.D.      Min.      O-C1      O-C2      Observer

2441946.9191      I     +0.0034    0.0000   T. T. Gough
   4937.516      II     +0.047    +0.002    M. Peel
   5671.4680     II     +0.0517   -0.0034   M. Peel
   6162.4943      I     +0.0636   +0.0017   J. Ells





                          J.E. ISLES
                          British Astronomical Assn
                          Burlington House
                          Piccadilly
                          London W1V ONL


References:
Dworak, T.Z. 1975, Acta Astr., 25, 103. [BIBCODE 1975AcA....25..103D ]
Rudnicki, K. (ed.), 1984, Rocznik Astronomiczny Obserwatorium Krakowskiego,
        International Supplement No. 56.