COMMISSION 27 OF THE I.A.U. INFORMATION BULLETIN ON VARIABLE STARS Number 148 Konkoly Observatory Budapest 5 August 1966 PHOTOELECTRIC MINIMA OF ECLIPSING VARIABLES There are given 13 observed minima for 5 eclipsing variable stars. The photoelectric observations were reduced by the tracking- paper method; except the star RZ Cassiopeiae, in which case the analytical method described by Kwee and van Woerden was applied. J. D. hel. E O - C n Observer RZ Cassiopeiae 1/ 2439025.3008 18,130 -0.039d 20 H. Minti, A. Ion 032.4730 18,136 -0.039 64 H. Minti, A. Ion 062.3562 18,161 -0.037 38 H. Minti, D. Dragusin 068.3316 18,166 -0.038 81 H. Minti, D. Dragusin TX Herculis 2/ 318.3201 2,259 -0.003 23 H. Minti, R. Dinescu 321.4111 2,260.5 -0.005 54 H. Minti, R. Dinescu V 566 Ophiuchi 3/ 294.4382 9,884 +0.002 36 H. Minti, R. Dinescu 319.4218 9,945 -0.002 107 H. Minti, R. Dinescu 44i Bootis 4/ 210.3994 6,888.5 +0.010 63 H. Minti, R. Dinescu 224.4624 6,941 +0.008 66 H. Minti, R. Dinescu 252.4480 7,045.5 +0.007 76 H. Minti, R. Dinescu 290.3855 7,187 +0.008 91 H. Minti, R. Dinescu V 839 Ophiuchi 5/ 313.4494 7,217 +0.004 53 H. Minti, R. Dinescu Note to Table 1/ O - C's were computed from the elements given. by P. P. Parenago in "Variable stars" 9, 125, 1951. 2/, 3/, 4/, 5/ O - C's were computed from the elements given in "Rocznic Astronomiczny", 37, 1966. Bucarest Observatory, C. POPOVICI Astrophysical Section