COMMISSION 27 OF THE I. A. U.
          INFORMATION BULLETIN ON VARIABLE STARS
                      Number 3180

                                     Konkoly Observatory
                                     Budapest
                                     3 May 1988

                                     HU ISSN 0374- 0676



           PHOTOMETRIC OBSERVATIONS OF ZETA AURIGAE
                 DURING THE 1987-1988 ECLIPSE


  Photoelectric UBV observations of the long period eclipsing binary Zeta
Aurigae were carried out from November 1987 to January 1988 with a 40 cm
reflector at the Department of Astronomy, Kyoto University. The comparison
star is Lambda Aurigae (G0V) whose magnitude and color indices are, V=4.71,
B-V=0.67, and U-B=0.10, respectively. Twenty-two standard stars were used for
reduction of the data and the reduction was done in usual manners.

  The resulting differential magnitudes in the Johnson system are listed
in Table I in the sense of Zeta Aurigae minus Lambda Aurigae.

    Table I. Magnitudes of Zeta Aurigae minus Lambda Aurigae


Date     JD*           DeltaV   DeltaB   DeltaU    n*

Nov.11   2447111.075   -0.895   -0.303   -0.142    3
Nov.19   2447119.279   -0.670    0.354    2.106    3
Nov.20   2447120.094   -0.700    0.365    1.953    3
Nov.25   2447125.099   -0.802    0.158    1.661    2
Dec. 1   2447131.075   -0.751    0.346    2.035    2
Dec. 7   2447136.999   -0.768    0.336    2.019    2
Dec.14   2447143.984   -0.743    0.275    2.085    2
Dec.23   2447153.002   -0.765    0.314    2.058    3
Dec.24   2447154.119   -0.750    0.342    2.069    5
Dec.25   2447155.123   -0.862    0.005    1.485    7
Dec.26   2447156.134   -0.913    0.229    0.178    7
Dec.27   2447157.069   -0.898   -0.287    0.073    6
Dec.28   2447158.132   -0.932   -0.251    0.043    8
Jan.20   2447180.977   -0.926   -0.246    0.001    3

* JD is Julian Day at mid-time of observations, and n is number of
observations.



               A. ASONUMA, S. NISHIDA, S. OKUMURA,
               M. SHIMADA, Y. UEDA, T. WATANABE, and
               M. SAITO

               Department of Astronomy
               University of Kyoto
               Kyoto 606
               Japan