COMMISSION 27 OF THE I.A.U. INFORMATION BULLETIN ON VARIABLE STARS Number 1437 Konkoly Observatory Budapest 1978 June 12 VISUAL OBSERVATIONS OF MIRA TYPE VARIABLE STARS A total of 3853 visual magnitude estimations by the Argelander step method were made during 1973 and 1977. For 57 stars, 114 times of maximum light and 40 times of minimum light were determined by the Pogson method. The comparison star magnitudes were taken from AAVSO sequences. Refractors of 4", 6" and 12" were used. Star phi Date(J.D.) Mag. N R And M 2442711d 6.1m 35 M 3141: 8.0 10 W And M 3115: 8.3 10 Y And M 2642: 9.1 23 M 3082 9.9 11 RR And M 3061: 9.8: 7 TU And M 2867: 8.0: 22 R Aql m 2493 10.5 M 2600 6.1 m 2759 11.2 114 M 2886 5.8 m 3049 11.7 R Ari M 2628: 9.1 20 M 2817: 8.4 18 M 3005 8.4 m 3104 12.5 40 M 3198: 8.4 R Aur M 3075: 7.5 11 U Aur M 2756 8.0 23 M 3178: 9.0 15 RR Aur M 2718: 9.3: 11 M 3032: 9.5: 16 R Boo M 2516 7.1 38 m 2866: 12.7 45 M 2957 6.8 S Boo M 2499 7.7 37 M 2766 8.4: 25 M 3297: 8.8 20 U Boo M 3253: 10.1: 6 R Cam M 2076: 8.5: 25 R Cnc M 2780: 7.3: 23 V Cnc M 3198 7.7 17 R Cas M 2754 6.9 m 2995 13.2 79 M 3169 6.9 T Cas m 2585: 12.3 M 2821 7.4 152 1* m 3030 12.8 M 3299 8.2 1* U Cas M 2688 9.4 16 M 2953 8.3 34 V Cas m 2404 12.2 M 2529 7.5 102 m 2637 12.2 M 2760 7.7 M 2977 7.7 m 3106: 12.0: 62 M 3210 7.8 X Cas M 3055 10.3 41 T Cep M 2593 6.0 1* m 2793 10.0 197 M 2984 6.4 m 3182 9.5 R Cyg M 2435 6.3 60 M 2907 8.9 52 M 3310 7.9: 16 S Cyg M 2821: 10.6: 8 U Cyg m 2467 11.7 M 2720 7.3 200 m 2962 10.7 M 3168 7.1 Z Cyg M 2481 9.2 m 2630 13.2 M 2766 9.1 106 m 2907: 13.4 M 3019 10.0 M 3285 9.3 18 RT Cyg M 2501 7.6 m 2598 11.5: M 2696 7.3 m 2790: 12.5: 143 M 2878 7.9 m 2976 12.7 M 3082 7.7 M 3264 7.5 20 TU Cyg M 2801 9.3 17 M 3004: 11.1 22 chi Cyg M 2550 4.7 60 M 2967 5.8 55 S Del m 2510: 11.7 M 2606 8.9 58 M 2895 8.8 21 2* S Del m 3042 11.7 21 R Dra m 2459: 13.0 62 M 2560 7.8 M 2803 7.4 m 2948 13.2 66 M 3049 7.7 M 3295 7.5 17 ST Gem M 2878: 9.4: 23 S Her M 2900 8.1 39 T Her M 2660: 8.6 21 m 2918 12.8 48 M 2991 8.4 M 3322 8.4 12 U Her M 2956 8.0 26 RS Her M 2556 7.7 27 m 2897 12.7 41 M 2999 7.5 M 3212: 7.6 12 RU Her M 2982 7.8 18 RV Her M 2878 9.7 17 SS Her M 2982 8.9: 17 DO Her M 2944: 10.6 10 R Leo m 2477 10.1 44 m 2775 10.1 33 M 3237: 5.1 20 W Lyr M 2511 8.1 28 M 2718 8.2 24 M 2902 8.0 38 m 3016: 12.4 18 M 3103 8.3 13 M 3295 7.9 19 RS Lyr M 2611 9.9 13 M 2922 10.3 19 RU Lyr M 2522 11.0 18 M 2893 10.8 25 RY Lyr M 3057 9.9 10 R Oph M 1862: 7.9 13 X Peg M 3033: 9.3: 12 Y Peg M 3038 10.5 9 R Per M 2630: 8.3 15 M 2826 8.6 20 M 3051 9.3 16 Y Per M 2797 8.3 47 M 3000 8.6 m 3128 10.7 47 R Tri m 2699 11.9 M 2822 5.3 45 M 3080 7.0 31 R UMa m 2475 12.9 27 M 2584: 7.3: 37 m 2786: 12.9: 12 M 2889 8.0 43 M 3199 7.7 21 S UMa m 2515 12.0 M 2609 8.1 1* m 2736 11.8 M 2831 7.9 162 m 2966 11.9 M 3057: 7.3 1* m 3204 12.3 T UMa M 2527 7.5 51 M 2772 7.3 34 M 3031 7.7 23 M 3300: 7.3 15 S UMi M 3288 7.8 20 U UMi M 2441 7.8 m 2627 11.8 M 2768: 7.9 171 m 2934 11.6 M 3094 7.8 m 3264 11.9 R Vir M 2526 7.2 22 M=Maximum, m=Minimum, N=Number of observations, 1) Wave on the ascending branch of the light curve, 2) double maximum. The accuracy of the given times is +-3 days or, if signed by a ":", it is +-6 days. The accuracy of the given magnitudes is +-0m.1 or - with a ":" - it is +-0m.2. U. HOPP Wilhelm - Foerster Sternwarte Berlin