COMMISSION 27 OF THE I. A. U.
          INFORMATION BULLETIN ON VARIABLE STARS
                       NUMBER 817

   	                	              Konkoly Observatory
        	                	      Budapest
        		      	              1973 August 11


	           MINIMA OF ECLIPSING VARIABLES




The list below contains photoelectric minima of eclipsing variables
observed with the 60 cm reflector of the Bologna Observatory. The
heliocentric moments of minima  and limits of errors were obtained by
the method of Kwee and Van Woerden. Linear elements in the 1969 
General Catalogue of Variable Stars were used to compute the E and O-C
values. N denotes the number of single observations used in computing
the time of minimum; the color of the observations is reported in the
last column.
The moment of secondary minimum of TW Dra obtained by fitting the 
observations of J.D. 2441861 (descending branch) and those of J.D.244139
(ascending branch) and using the period in the 1969 General Catalogue
of Variable Stars.


Star        J.D. hel.             	  N        E      O-C
            (2400000)
AR Aur      40930.5414    +/-0.0001d     23     3431.5   +0.0196d     yellow
            40930.5415       0.0002      23     3431.5   +0.0197      blue
BF Aur      40567.4101       0.0002      88     3860.5   +0.0029      yellow
            40628.3645       0.0002      69     3899     +0.0034        "
            40916.5107       0.0002      88     4081     +0.0039        "
            40931.5513       0.0002      37     4090.5   +0.0039        "
            40939.4671       0.0002      47     4095.5   +0.0037        "
            41668.5406       0.0002      61     4556     +0.0052        "
            41691.4976       0.0003      48     4570.5   +0.0055        "
AH Cep      40873.622        0.002       14     3315.5   +0.143         "
            40873.617  	     0.001       14     3315.5   +0.138       blue
EK Cep      40882.523        0.002       31      424.5   +0.204       yellow
            40882.524        0.003       26      424.5   +0.205       blue
V 1143 Cyg  40837.4314       0.0001      33     2007     +0.0462      yellow
            40837.4312 	     0.0001      33     2007     +0.0460      blue
            41135.4208       0.0005       6     2046     +0.0468      blue
TW Dra      41068.4066       0.0001      83     2558     -0.0189      blue
            41395.467        0.002       19     2674.5   +0.041       blue
u Her       40053.4646       0.0002      31    16686     -0.0019      blue
            41176.402        0.001       42    17233.5   -0.002       blue
AR Lac      40932.3168       0.0003      65     7214.5   +0.0270      yellow


    P. BATTISTINI, A. BONIFAZI and A. GUARNIERI
Instituto di Astronomia Universita di Bologna - Italia.