COMMISSION 27 OF THE I.A.U. INFORMATION BULLETIN ON VARIABLE STARS Number 1495 Konkoly Observatory Budapest 1978 October 24 PHOTOELECTRIC MINIMA OF DI PEGASI Following are the results of observations made at the Ankara University Observatory with a 30 cm Maksutov telescope, an EMI 6256 S photomultiplier tube and standard B, V filters: Hel.Min.J.D. m.e. Min. Colour E O-C 2443725.5179 +-.0009 II V 5072.5 +.0002 29.4335 2 I B 5078 8 29.4333 2 I V 6 56.4831 4 I B 5116 14 56.4832 5 I V 15 80.3277 8 II V 5149.5 2 The method of Kwee and van Woerden (1956) was used in the calculations of the times of minima and the associated mean errors. The last column was calculated using the following formula (Binnendijk AJ 78, 97, 1973) Min. I. = J.D. 2440114.8356 + 0.7118151*E. ZEKI TUFEKCIOGLU Ankara University Observatory A.U. Fen Fakultesi Ankara-Turkey