COMMISSION 27 OF THE I. A. U.
         INFORMATION BULLETIN ON VARIABLE STARS
                     Number 2077

                                 Konkoly Observatory
                                 Budapest
                                 1982 January 27

                                 HU ISSN 0374-0676


    PRELIMINARY PHOTOMETRIC ORBITAL ELEMENTS OF 1 PERSEI


The light variation of the bright eclipsing binary 1 Persei
(HD 11241, m_v=5.52) has been studied photoelectrically by Kurtz
in 1977 and by North and Rufener in 1980 in V-light.
We solved the combined light curve of this binary system by means
of a least square procedure applied to unrectified observations.
In the table we list our photometric orbital elements.

         Min I  = Transit 
         Min II = Occultation 
         u_g=u_s= 0.40(assumed)
         k    =   .87   +- .07 
         r_g  =   .0381 +- .0003
         r_s  =   .0331 +- .0002
         i    = 88.3d   +- 0.9d
         e    =   .309  +- .008
         omega=115.9d   +- 0.7d
         L_g  =   .73   +- .03
         L_s  =   .27   +- .03

1 Persei is confirmed to be a detached system free of complications. 
A detailed analysis of this system will be published
elsewere.

Acknowledgements.   Thanks are due to Dr. P. North and Dr. F. Rufener
for making their observations available to me.

                   A. GASPANI
                   Osservatorio Astronomico di Brera
                   Succursale di S. Rocco
                   via E. Bianchi, 46
                   22055 Merate
                   (CO) ITALIA

References:

North P., Rufener F.: 1981, IBVS 2036
North P., Rufener F.: 1981, private communication