COMMISSION 27 OF THE I. A. U. INFORMATION BULLETIN ON VARIABLE STARS NUMBER 285 Konkoly Observatory Budapest 1968 June 16 OBSERVATIONS OF RZ CAS AND SU CAS Yellow photoelectric observations were made in 1967-1968 of the eclipsing binary, RZ Cas, and of the classical cepheid, SU Cas. Heliocentric light epochs were determined: Primary minimum light, RZ Cas 2,439,877.514 Maximum light, SU Cas 2,439,844.740 The 174 observations of RZ Cas satisfactorily cover the cycle and will be subjected to an orbital analysis. Standardization of the 100 observations of SU Cas has been completed and will be published elsewhere. RZ CASSIOPEIAE J.D.hel. v-c Phase 24398.. 23.6030 -1.114 .1049 .6317 -1.090 .1290 .6571 -0.966 .1502 .6786 -0.671 .1683 37.5649 -1.108 .7857 .5882 -1.124 .8052 .6039 -1.145 .8182 .6174 -1.134 .8295 .6306 -1.156 .8405 .6497 -1.123 .8525 .6632 -1.191 .8676 .6778 -1.139 .8801 42.5218 -1.080 .9327 44.5246 -1.139 .6082 .5364 -1.151 .6180 .5440 -1.139 .6245 .5530 -1.137 .6320 .5638 -1.155 .6410 .5718 -1.140 .6477 .5833 -1.168 .6573 .5922 -1.139 .6648 .5999 -1.114 .6712 .6183 -1.129 .6866 .6263 -1.078 .6933 .6326 -1.066 .6985 .6433 -1.081 .7076 .6502 -1.079 .7133 .6620 -1.078 .7232 .6718 -1.094 .7314 .6790 -1.097 .7374 .6872 -1.103 .7441 .6968 -1.116 .7531 44.7041 -1,120 .7583 .7120 -1.120 .7650 .7197 -1.132 .7715 .7367 -1.127 .7847 45.5179 -1.137 .4392 .5273 -1.147 .4470 .5339 -1,159 .4525 .5474 -1.132 .4632 51.5049 -1.152 .4480 .5177 -1.150 .4697 .5251 -1.134 .4648 .5376 -1.145 .4753 .5459 -1.154 .4823 51.5542 -1.162 .4893 .5643 -1.171 .4977 .5713 -1.166 .5035 .5782 -1.157 .5094 .5862 -1.166 .5160 .6052 -1.153 .5329 .6136 -1.188 .5390 .6205 -1.161 .5447 .6303 -1.162 .5529 .6373 -1.147 .5587 .6497 -1.192 .5692 .6566 -1.170 .5749 .6747 -1.144 .5901 .6820 -1.152 .5962 .6893 -1.176 .6023 .7052 -1.186 .6156 54.5287 -1.161 .9778 .5416 -1.141 .9886 .5509 -1.143 .9963 .5618 -1.171 .0054 .5715 -1.145 .0125 .5802 -1.130 .0208 .5899 -1.180 .0289 .6052 -1.142 .0417 .6128 -1.130 .0480 .6194 -1.157 .0536 .6242 -1.151 .0577 .6333 -1.151 .0652 .6413 -1.142 .0719 .6486 -1.142 .0780 .6670 -1.135 .0934 .6739 -1.117 .0992 .6805 -1.132 .1047 .6874 -1.126 .1105 .6975 -1.135 .1190 .7048 -1.118 .1251 .7107 -1.137 .1300 .7215 -1.039 .1400 .7278 -1.011 .1453 .7344 -0.940 .1508 61.5729 -1.153 .8710 77.4987 +0.158 .1947 .5004 +0.180 .1961 .5014 +0.217 .1969 .5084 +0.388 .2027 .5097 +0.396 .2039 .5115 +0.414 .2049 .5181 +0.402 .2109 .5202 +0.399 .2126 .5216 +0.383 .2138 .5275 +0.291 .2188 .5292 +0.260 .2202 .5307 +0.216 .2214 .5320 +0.179 .2225 .5379 +0.044 .2276 .5396 +0.018 .2292 .5410 -0.021 .2301 .5421 -0.051 .2310 .5483 -0.229 .2362 .5504 -0.290 .2379 .5518 -0.318 .2391 .5523 -0.356 .2403 .5542 -0.374 .2411 .5608 -0.501 .2476 .5622 -0.535 .2478 .5636 -0.555 .2490 .5650 -0.603 .2501 .5709 -0.707 .2551 .5723 -0.736 .2563 .5740 -0.781 .2577 .5754 -0.801 .2588 .5816 -0.873 .2640 .5830 -0.872 .2653 .5847 -0.879 .2664 .5858 -0.908 .2676 .5921 -0.984 .2728 .5934 -0.999 .2739 .5952 -1.012 .2754 .5966 -1.024 .2766 .6032 -1.042 .2821 .6039 -1.064 .2827 .6063 -1.083 .2847 .6077 -1.087 .2862 .6139 -1.124 .2910 .6150 -1.123 .2920 .6167 -1.126 .2934 .6323 -1.134 .3064 .6340 -1.127 .3076 .6355 -1.124 .3091 .6428 -1.190 .3152 24399.. 02.5334 -1.071 .1407 .5348 -1.047 .1419 .5362 -1.011 .1431 .5445 -0.951 .1500 .5459 -0.924 .1512 .5529 -0.864 .1570 .5542 -0.868 .1581 .5608 -0.753 .1636 .5636 -0.710 .1659 .5654 -0.679 .1674 .5695 -0.580 .1709 .5709 -0.537 .1721 .5772 -0.463 .1774 .5813 -0.351 .1808 .5827 -0.328 .1820 .5841 -0.289 .1831 .5897 -0.110 .1878 .5911 -0.073 .1890 .5945 +0.097 .1918 .6004 +0.091 .1967 .6018 +0.153 .1979 .6029 +0.178 .1989 .6042 +0.333 .1999 .6056 +0.390 .2011 .6067 +0.397 .2020 .6080 +0.423 .2031 .6094 +0.435 .2043 .6108 +0.456 .2055 .6121 +0.453 .2065 .6136 +0.468 .2078 .6150 +0.475 .2090 .6181 +0.509 .2116 .6202 +0.519 .2133 .6264 +0.236 .2185 .6279 +0.235 .2197 .6299 -0.003 .2214 03.5764 -1.130 .0134 .5882 -1.226 .0232 .6000 -1.159 .0331 SU CASSIOPEIAE 24398.. 23.5973 -1.495 .2285 .6268 -1.464 .2436 .6449 -1.484 .2529 .6748 -1.447 .2682 37.5591 -1.312 .3910 .5855 -1.330 .4045 .6008 -1.319 .4143 .6143 -1.334 .4193 .6272 -1.324 .4259 .6466 -1.302 .4358 .6601 -1.304 .4428 .6751 -1.283 .4505 44.5221 -1.509 .9630 .5333 -1.520 .9687 .5415 -1.544 .9730 .5502 -1.540 .9774 .5606 -1.550 .9827 .5686 -1.568 .9869 .5801 -1.606 .9928 .5898 -1.570 .9977 .5971 -1.553 .0015 .6162 -1.579 .0114 .6235 -1.582 .0150 .6304 -1.579 .0185 .6405 -1.591 .0237 .6481 -1.593 .0276 .6594 -1.584 .0335 .6693 -1.574 .0385 .6770 -1.596 .0425 .6846 -1.585 .0465 .6947 -1.601 .0516 .7013 -1.602 .0549 .7096 -1.596 .0592 .7173 -1.600 .0635 .7346 -1.596 .0719 45.5249 -1.265 .4775 .5315 -1.268 .4808 .5454 -1.183 .4870 51.5136 -1.179 .5497 .5230 -1.138 .5545 .5407 -1.126 .5693 .5518 -1.201 .5744 .5618 -1.213 .5778 .5684 -1.192 .5815 .5757 -1.204 .5856 .6028 -1.202 .5924 .6112 -1.210 .5998 .6181 -1.196 .6033 .6287 -1.189 .6083 .6351 -1.199 .6120 .6473 -1.174 .6183 .6539 -1.186 .6217 .6727 -1.202 .6330 .6796 -1.194 .6345 51.6586 -1.199 .6385 .7074 -1.175 .6498 54.5381 -1.588 .1013 .5489 -1.581 .1068 .5593 -1.577 .1121 .5693 -1.627 .1173 .5766 -1.600 .1210 .5864 -1.585 .1260 .6023 -1.568 .1342 .6107 -1.573 .1385 .6173 -1.584 .1419 .6311 -1.580 .1490 .6388 -1.575 .1529 .6461 -1.569 .1567 .6648 -1.556 .1663 .6718 -1.547 .1699 .6853 -1.548 .1768 .6954 -1.537 .1820 .7027 -1.531 .1857 .7188 -1.528 .1939 .7302 -1.536 .2004 61.5903 -1.209 .7190 77.5063 -1.374 .8839 .5160 -1.414 .8889 77.5254 -1.444 .8937 .5358 -1.427 .8991 .5462 -1.467 .9044 .5587 -1.452 .9108 .5691 -1.473 .9161 .5796 -1.496 .9215 .5900 -1.497 .9269 .6011 -1.498 .9325 .6119 -1.518 .9381 .6209 -1.526 .9433 .6303 -1.548 .9475 .6405 -1.527 .9528 24399.. 02.5417 -1.195 .6855 .5508 -1.193 .6902 .5584 -1.220 .6951 .5754 -1.214 .7038 .5987 -1.228 .7157 03.5813 -1.417 .2198 .5855 -1.473 .2220 .5924 -1.467 .2255 .5952 -1.470 .2269 .5980 -1.405 .2284 Flower and Cook Observatories GEORGE F. REED