IAU COMMISSION 27 UNPUBLISHED DATA FILE 53 3 pages, including cover sheet JANUARY 1985 PHOTOELECTRIC V PHOTOMETRY OF HD 219989 This file contains differential photometry of the newly discovered eclipsing binary HD 219989 in the V-band of the UBV system, using BD +40 5046 as the comparison star. These observations were made at seven different observatories; the observer's last name is given. The first column is heliocentric Julian date. The second column is the number of individual differential measures contained in each mean. The third column is the mean differential magnitude, in the sense variable minus comparison. The last column is the standard error of the mean. More details are given in the paper published by Crawford et al. (1984) in I.B.V.S. No. 2624. 3 pages, including cover sheet Douglas S. Hall Dyer Observatory Vanderbilt University Nashville, TN 37235 U.S.A. ******************************************************************************** #Comment: RETYPED FROM POORLY READABLE PHOTOCOPY - MIGHT CONTAIN ERRORS! ******************************************************************************** Ingvarsson ---------- 2445636.3252 5 0.637 0.001 639.3780 5 .922 .003 .4850 3 .784 .004 .5007 5 .762 .006 649.4609 3 .639 .004 651.4546 3 .624 .002 655.2534 3 .629 .006 657.2627 5 .631 .003 659.2754 3 .639 .005 660.2249 4 .939 .003 .2425 3 .915 .004 .2847 3 .871 .005 .3105 5 .830 .004 .3313 4 .806 .003 .3665 3 .770 .004 .4030 3 .740 .005 .4395 3 .691 .002 .4907 3 .653 .010 .5195 3 .600 .009 .5347 3 .597 .004 .5503 4 .615 .003 .5659 2 .634 .008 667.2617 3 .637 .000 669.1938 3 .637 .002 679.2222 3 .638 .001 681.2652 2 .639 .001 695.3008 3 .637 .001 697.3286 3 .638 .002 704.4023 3 .636 .000 709.2271 3 .637 .004 749.2993 3 .635 .002 2445750.3413 3 0.641 0.002 Barksdale --------- 2445653.5762 3 0.614 0.006 655.5645 3 .615 .006 660.5952 3 .613 .006 661.5991 3 .610 .003 664.5708 3 .624 .000 676.5815 3 .575 .012 677.5527 3 .616 .009 679.5376 3 .623 .006 681.6304 3 .585 .003 682.5942 3 .604 .003 701.5600 3 .929 .005 2445707.5591 3 0.598 0.010 Persinger --------- 2445670.5469 6 0.644 0.003 675.5078 3 .632 .010 699.5156 3 .651 .013 702.5249 3 .660 .012 707.5122 3 .652 .019 2445710.5386 2 0.617 0.049 Bisard ------ 2445936.653 3 0.632 0.003 960.606 3 .629 .007 961.624 3 .605 .007 963.648 3 .655 .012 2445964.555 3 0.649 0.016 Stelzer ------- 2445633.5786 3 0.657 0.005 635.6655 3 .628 .005 636.6157 3 .638 .006 2445643.6538 3 0.642 0.003 Hoff ---- 2445614.6152 3 0.682 0.027 634.6992 3 .673 .035 636.6021 3 .654 .004 2445644.6533 2 0.627 0,010 Heiser ------ 2445697.5928 2 0.632 0.003 699.5839 2 .635 .005 2445703.6149 4 0.639 0.005