COMMISSION 27 OF THE I. A. U. INFORMATION BULLETIN ON VARIABLE STARS NUMBER 740 Konkoly Observatory Budapest 1972 November 21 MINIMA OF ECLIPSING VARIABLES Eclipsing variables were observed visually by members of Polskie Towarzystwo Milosnikow Astronomii, Centralna Sekcja Obserwacji Gwiazd Zmiennych (Polish Amateur Astronomical Society, Central Section of Observations of Eclipsing Variables) mainly during special meeting in Niepolomice and Lanckorona near Cracow. The heliocentric moments of minima and limits of errors were determined by tracing-paper method. The (O-C) values were computed using the elements given in "Rocznik Astronomiczny Observatorium Krakowskiego 1972" Letter n after moments of minima denotes normal minima, letter s - secondary minima. N - denotes number of observations, : - denotes uncertain determination of the moment. Observers' names are given in the last column. Cracow, November 1972 PIOTR FLIN Cracow University Astronomical Observatory and Polish Amateur Astronomical Society Central Section of Observations of Eclipsing Variables. J.D.hel N O-C Observer ----------------------------------------------------------------------- OO AQL 2441539.408d s +-0.005d 16 -0.005d L. Frasinski 539.422 s 0.008 12 +0.009 K. Szlachcic 542.453 s 0.006 17 0.000 L. Frasinski V 346 AQL 2441544.425 0.006 16 -0.016 W. Zaluski 544.427 0.004 19 -0.014 A. Maruszak 544.430 0.006 19 -0.011 P. Turkowski 544.432 0.007 19 -0.009 M. Trzyniec 544.436 n 0.013 28 -0.005 T. Bryczkowska 544.437 n 0.006 26 -0.004 L. Frasinski 544.439 0.008 16 -0.002 K. Drozd AR AUR 544.525: 0.010 15 +0.006 W. Zaluski RZ CAS 542.498 0.004 13 -0.005 W. Caban 560.433 0.003 14 +0.001 W. Zaluski 578.358 0.004 8 -0.003 W. Sedzielowski XX CAS 542.443: 0.011 14 -0.011 L. Frasinski 542.450: 0.009 14 -0.004 K. Szlachcic AB CAS 477.449 n 0.009 28 +0.028 A. Kluzik V 401 CYG 543.408 n 0.008 21 +0.049 L. Frasinski 543.701s n : 0.015 17 +0.045 L. Frasinski UX HER 543.396 0.006 13 +0.003 L. Frasinski 543.398 0.007 15 +0.005 W. Zaluski V 338 HER 544.475 0.006 15 +0.021 K. Szlachcic 544.476 0.004 17 +0.022 L. Frasinski EE PEG 559.494 n 0.011 26 -0.005 W. Zaluski ST PER 578.517 0.004 8 +0.005 W. Sedzielowski Z VUL 560.441 0.004 13 +0.009 W. Zaluski -----------------------------------------------------------------------------