COMMISSION 27 OF THE I. A. U. INFORMATION BULLETIN ON VARIABLE STARS Number 2318 Konkoly Observatory Budapest 21 April 1983 HU ISSN 0374-0676 SIX VARIABLE STARS DISCOVERED IN BINARY SYSTEMS A photoelectric program was begun in 1968 at the Flagstaff Station to obtain UBV observations of selected visual binaries. This program has led to the discovery that the A component of ADS 1693 = GZ And was a W Ursae Majoris system (Walker, 1973). Reported here are individual magnitudes and colors that indicate variability for six of those systems. The average dispersion in V for the 302 program stars is 0.009 magnitudes, whereas the scatter for each of the six stars listed below is much greater, on the order of 0.1 magnitude in V. All these systems were suspected of having light variation prior to these observations. Listed below are the stars with their ADS and BD numbers, or the discoverer code number, coordinates for 1900.0, the heliocentric Julian Day of the observation, the V magnitude, and the B-V and U-B colors, respectively. ADS 11632 B=BD+59d1915 18h41.8m+59d27' 2440104.6968 9.69 1.58 1.05 2440113.6992 9.67 1.57 1.09 2440147.6106 9.80 1.55 1.10 ADS 14233 ABp=BD+11d4368 20h40.2m+11d57' 2440104.7309 6.69 0.16 0.09 2440113.7305 6.79 0.19 0.09 2440116.7130 6.69 0.19 0.08 2440146.7617 6.72 0.18 0.05 2440147.6803 6.70 0.18 - 2440170.6680 6.66 0.19 0.07 2440193.5986 6.69 0.19 0.09 2440195.6027 6.71 0.17 0.08 2443057.6965 6.65 0.22 0.07 2443071.6600 6.69 0.22 - 2443407.7024 6.70 0.20 0.09 2443407.7274 6.70 0.20 0.08 2443794.6495 6.73 0.19 0.09 2444044.9291 6.71 0.18 0.08 2444161.6278 6.73 0.18 0.07 2444174.6100 6.67 0.17 0.07 ADS 14894 AB=BD+2d4346 21h16.3m+02d28' 2440104.7552 7.40 1.07 0.97 2440113.7375 7.50 1.07 0,97 2440116.7297 7.38 1.08 0.96 2440146.7679 7.42 1.07 0.96 2440147.7088 7.39 1.07 0.96 2440170.6810 7.36 1.05 0.98 2440193.6052 7.44 1.07 0.98 2440195.6099 7.46 1.07 0.99 2442715.6237 7.42 1.09 0.92 2442718.5790 7.41 1.09 0.99 2442719.6025 7.42 1.05 - 2443057.7021 7.38 1.07 0.93 2443071.6760 7.39 1.11 - 2443419.6662 7.40 1.07 0.94 2443760.7474 7.40 1.04 0.88 2443778.7048 7.42 1.08 0.97 2443794.6669 7.38 1.11 0.99 2443795.6446 7.41 1.08 0.94 2444161.6431 7.39 1.11 0.96 2444174.6253 7.42 1.09 0.95 Kui 110AB=BD+61d2233 21h57.6m+62d01' 2442696.6865 5.66 0.03 -0.81 2442715.6349 6.71 0.07 -0.76 2442718.6030 6.65 0.08 -0.80 2442719.6141 6.65 0.06 -0.79 2443057.7086 6.61 0.09 -0.81 2443104.6129 6.68 0.04 -0.82 2443419.7024 6.71 0.03 -0.80 2443777.7114 6.66 0.04 -0.77 2444161.6990 6.67 0.04 -0.84 2444174.6704 6.67 0.05 -0.82 2444174.6968 6.66 0.04 -0.82 ADS 15679A=BD+44d4059 22h05.2m+44d21' 2442696.6923 6.75 -0.03 -0.27 2442715.6403 6.77 -0.01 -0.29 2442718.6082 6.74 -0.02 -0.28 2442719.6227 6.71 -0.04 -0.28 2443057.7132 6.70 +0.03 -0.27 2443104.6176 6.81 -0.05 -0.27 2443419.7070 6.77 -0.03 -0.29 2443777.7182 6.78 -0.03 -0.24 2444161.6998 6.79 -0.06 -0.30 2444174.6751 6.75 -0.03 -0.26 2444174.7022 6.74 -0.02 -0.26 2444189.6529 6.76 -0.02 -0.26 ADS 15794AB=BD+43d4165 22h11.6m+43d24' 2442715.6473 7.57 0.02 -0.41 2442718.6152 7.55 0.03 -0.44 2442719.6298 7.53 0.02 -0.43 2443057.7196 7.48 0.06 -0.42 2443104.6239 7.56 0.00 -0.43 2443419.7147 7.52 0.00 -0.45 2443777.7266 7.56 0.01 -0.40 2444161.7478 7.54 -0.02 -0.47 2444174.6828 7.55 0.02 -0.43 2444174.7092 7.54 0.02 -0.42 R.L. WALKER U.S. Naval Observatory Flagstaff Station Flagstaff, AZ 86002 U.S.A. Reference: Walker, R.L. 1973, I.B.V.S., No. 855.