IAU COMMISSION 27 UNPUBLISHED DATA FILE 233E June, 1991 Photoelectric measurements of the Delta Scuti variable HR 8880 = Tau Pegasi. The table lists photoelectric measurements of the Delta Scuti variable HR 8880 = Tau Pegasi. From 1975 to 1979 twelve nights of photoelectric V measurements were obtained with the 0.76 and 0.91 m telescopes at McDonald Observatory as part of a dissertation (Loumos, G. L. 1980, Ph. D. dissertation, Univ. of Texas). Two comparison stars per night were used: HR 8905 and HR 8915. The measurements listed here represent the V magnitudes of HR 8880 relative to these two comparison stars in the sense variable - comparison. The zero-point chosen is arbitrary. More detailed descriptions and analyses of these measurements can be found in a paper entitled 'Amplitude variability of Tau Pegasi and the nature of singly- periodic Delta Scuti stars' accepted for publication in Astronomy and Astrophysics. M. Breger Institut fuer Astronomie Tuerkenschanzstrasse 17 A-1180 Wien Austria ******************************************************************************* Measurements of Tau Pegasi Hel. J.D. dV 2440000 + (mag) 2647.8160 0.002 2647.8271 0.007 2647.8382 0.005 2647.8438 0.003 2647.8542 -0.003 2647.8611 -0.005 2647.8681 -0.002 2647.8757 0.001 2647.8958 0.004 2647.9014 0.001 2647.9076 -0.003 2647.9139 -0.008 2647.9208 -0.005 2647.9306 -0.005 2647.9361 0.005 2647.9410 0.002 2647.9465 0.000 2647.9521 0.002 2647.9590 -0.005 2647.9639 0.000 2647.9694 -0.007 2648.7739 0.001 2648.7789 -0.001 2648.7837 -0.004 2648.7881 -0.006 2648.7926 -0.006 2648.7971 -0.006 2648.8016 -0.001 2648.8061 0.001 2648.8106 0.002 2648.8165 0.004 2648.8213 0.003 2648.8259 -0.001 2648.8305 -0.003 2648.8363 -0.003 2648.8407 -0.008 2648.8457 -0.009 2648.8521 -0.008 2648.8613 -0.001 2648.8663 0.008 2648.8725 0.007 2648.8770 0.003 2648.8815 0.001 2648.8873 -0.007 2648.8927 -0.009 2648.8975 -0.012 2648.9021 -0.007 2648.9066 -0.003 2648.9110 0.002 2648.9242 0.004 2648.9288 0.004 2648.9341 -0.001 2648.9388 -0.002 2648.9435 -0.005 2648.9478 -0.006 2648.9524 -0.004 2648.9571 -0.003 2648.9620 0.002 2680.8418 -0.003 2680.8466 -0.003 2680.8538 -0.003 2680.8585 0.000 2680.8628 0.003 2680.8676 0.006 2680.8718 0.006 2680.8766 0.004 2680.8811 -0.001 2680.8895 -0.005 2680.8949 -0.009 2680.8994 -0.005 2680.9037 -0.003 2680.9080 0.004 2680.9137 0.008 2680.9188 0.012 2681.7781 0.002 2681.7837 0.004 2681.7893 0.002 2681.7937 0.004 2681.7981 0.003 2681.8023 0.004 2681.8067 0.002 2681.8110 -0.002 2681.8151 -0.003 2681.8193 -0.006 2681.8240 -0.008 2681.8283 -0.001 2681.8326 0.001 2681.8366 0.003 2681.8407 0.006 2681.8450 0.004 2681.8518 0.005 2681.8562 0.004 2681.8610 0.000 2681.8659 -0.002 2681.8701 -0.005 2681.8750 -0.001 2681.8801 -0.001 2681.8848 -0.002 2681.8901 0.006 2682.7511 -0.006 2682.7555 -0.005 2682.7596 -0.002 2682.7635 0.003 2682.7703 0.004 2682.7766 0.007 2682.7832 0.003 2682.7896 -0.002 2682.7962 -0.005 2682.8025 -0.001 2682.8089 0.000 2682.8155 0.002 2682.8234 0.005 2682.8297 0.004 2682.8363 0.003 2682.8434 -0.002 2682.8613 -0.004 2682.8678 0.002 2682.8748 0.006 2682.8818 0.006 2682.8890 0.004 2682.8961 0.002 2682.9028 -0.004 2682.9098 -0.003 2682.9168 -0.003 2682.9247 0.003 2682.9326 0.005 2682.9397 0.003 2682.9468 0.001 2684.7247 0.002 2684.7308 0.003 2684.7402 -0.001 2684.7476 -0.004 2684.7539 -0.004 2684.7602 -0.003 2684.7671 0.001 2684.7736 0.005 2684.7812 0.011 2684.7893 0.005 2684.7964 -0.002 2684.8042 -0.008 2684.8125 -0.003 2684.8191 0.000 2684.8259 0.003 2684.8325 0.005 2684.8395 0.002 2684.8466 0.000 2684.8533 0.000 2684.8600 -0.003 2684.8683 -0.006 2684.8754 -0.002 2684.8914 0.006 2684.8979 0.003 2684.9047 0.001 2684.9121 -0.001 2684.9190 -0.005 2705.6163 -0.006 2705.6223 -0.007 2705.6278 -0.001 2705.6323 0.000 2705.6368 0.002 2705.6422 0.006 2705.6467 0.005 2705.6509 0.005 2705.6551 0.003 2705.6594 0.002 2705.6642 -0.002 2705.6686 -0.007 2705.6728 -0.006 2705.6767 -0.005 2705.6832 -0.002 2705.6880 -0.002 2705.6921 0.003 2705.6971 0.005 2705.7025 0.010 2705.7287 -0.006 2705.7328 -0.005 2705.7370 -0.001 2705.7416 0.001 2705.7459 0.001 2705.7502 0.007 2705.7553 0.004 2705.7602 0.001 2705.7646 0.000 2705.7690 -0.001 2705.7733 -0.003 2705.7777 -0.006 2705.7827 -0.003 2705.7875 -0.005 2705.7939 -0.002 2705.8034 0.002 2705.8101 0.002 2705.8168 0.002 2705.8244 0.000 2705.8341 -0.006 2705.8408 -0.006 2705.8482 -0.001 2711.5768 0.001 2711.5839 -0.003 2711.5918 -0.004 2711.5986 -0.006 2711.6055 -0.004 2711.6121 0.001 2711.6189 0.004 2711.6263 0.003 2711.6334 0.001 2711.6404 -0.004 2711.6473 -0.007 2711.6544 -0.010 2711.6620 -0.005 2711.6745 0.004 2711.6822 0.004 2711.6894 0.001 2711.7072 -0.007 2711.7146 0.000 2711.7223 0.004 2711.7295 0.005 2711.7369 0.007 2711.7441 0.005 2711.7511 -0.002 2711.7589 -0.002 2711.7662 0.000 3120.6313 0.009 3120.6362 0.002 3120.6407 0.011 3120.6451 0.004 3120.6495 0.007 3120.6537 -0.001 3120.6580 -0.003 3120.6624 -0.004 3121.6005 -0.001 3121.6065 0.001 3121.6122 0.008 3121.6174 0.006 3121.6220 0.005 3121.6270 0.004 3121.6313 -0.004 3121.6369 -0.011 3121.6415 -0.011 3121.6458 -0.010 3121.6511 -0.003 3121.6553 -0.007 3121.6604 0.010 3121.6651 0.010 3121.6725 0.006 3368.8268 0.006 3368.8327 0.010 3368.8378 0.009 3368.8429 -0.003 3368.8483 -0.007 3368.8612 -0.006 4152.7471 -0.004 4152.7532 -0.011 4152.7580 -0.014 4152.7624 -0.012 4152.7671 -0.009 4152.7717 -0.002 4152.7761 0.002 4152.7805 0.006 4152.7854 0.010 4152.7896 0.009 4152.7938 0.008 4152.8023 -0.004 4152.8061 -0.008 4152.8103 -0.013 4152.8144 -0.014 4152.8188 -0.012 4152.8226 -0.008 4152.8270 0.001 4152.8321 0.007 4152.8364 0.012 4152.8407 0.014 4152.8469 0.009 4152.8516 0.005 4152.8586 -0.006 4152.8629 -0.006 4152.8671 -0.008 4152.8714 -0.006 4152.8756 -0.004 4152.8806 0.004 4152.8871 0.008