# IBVS 2891-t2.txt #IAU COMMISSION 27 UNPUBLISHED DATA FILE 187 #Comment: OCR-ed FROM PAPER SOURCE - MIGHT CONTAIN ERRORS! #Object: V2008 Cyg #Author: Percy, J.R. et al. #IBVSdataKey: photometry IAU Commission 27 Archives of Unpublished Photoelectric Observations File: 187 3 pages, including cover sheet Reference: Percy, J.R. et al The Photometric Variability of 27 Cyg (HR 7689, HD 191026) IAU Inf. Bull. Var. Stars #2891 John R. Percy Department of Astronomy University of Toronto Toronto, Ontario Canada M5S 1A1 June, 1986 PHOTOMETRIC OBSERVATIONS OF 27 CYGNI HJD V sigma(V) B sigma(B) U sigma(U) B-V U-B 2446000+ 222.7588 5.360 0.004 6.220 0.004 ----- ----- 0.860 ----- PR 230.7603 5.380 0.004 6.247 0.004 ----- ----- 0.867 ----- PR 240.7212 5.400 0.005 6.277 0.005 ----- ----- 0.877 ----- PR 241.7847 5.408 0.005 6.290 0.005 ----- ----- 0.882 ----- PR 243.7554 5.398 0.005 6.272 0.005 ----- ----- 0.874 ----- PR 249.7539 5.382 0.004 6.254 0.004 ----- ----- 8.872 ----- PR 256.6484 5.357 0.006 6.236 0.006 ----- ----- 0.879 ----- PR 257.6450 5.360 0.006 6.217 0.006 ----- ----- 0.857 ----- PR 261.7456 5.367 0.004 6.239 0.004 ----- ----- 0.872 ----- PR 262.5420 5.356 0.003 6.180 0.007 6.766 0.001 0.824 0.586 H 262.6948 5.368 0.004 6.240 0.004 ----- ----- 0.872 ----- PR 268.6978 5.379 0.004 6.255 0.004 ----- ----- 0.876 ----- PR 269.7588 5.385 0.004 6.259 0.004 ----- ----- 0.874 ----- PR 272.4883 5.380 0.001 6.261 0.008 6.783 0.007 0.881 0.521 H 272.6885 5.376 0.004 6.250 0.004 ----- ----- 0.874 ----- PR 273.7095 5.377 0.004 6.249 0.004 ----- ----- 0.872 ----- PR 275.6929 5.375 0.005 ----- ----- ----- ----- ----- ----- W 277.7876 5.377 0.005 6.245 0.005 ----- ----- 0.868 ----- PR 278.7119 5.378 0.004 6.252 0.004 ----- ----- 0.874 ----- PR 279.7192 5.368 0.002 ----- ----- ----- ----- ----- ----- W 280.3971 5.365 0.011 6.235 0.006 6.798 0.004 0.869 0.564 H 281.5339 5.387 0.004 6.260 0.003 6.796 0.002 0.873 0.536 H 282.7051 5.363 0.003 ----- ----- ----- ----- ----- ----- W 283.6680 5.408 0.010 ----- ----- ----- ----- ----- ----- KH 285.6421 5.373 0.010 ----- ----- ----- ----- ----- ----- KH 286.6230 5.388 0.020 ----- ----- ----- ----- ----- ----- KH 287.4131 5.387 0.002 6.253 0.006 6.790 0.004 0.866 0.536 H 288.3388 5.390 0.006 6.258 0.008 6.805 0.009 0.869 0.547 H 288.6348 5.397 0.010 ----- ----- ----- ----- ----- ----- KH 288.7217 5.386 0.004 6.258 0.004 ----- ----- 0.872 ----- PR 289.3988 5.376 0.001 6.255 0.004 6.801 0.005 0.879 0.546 H 290.3245 5.386 0.007 6.249 0.001 6.798 0.001 0.864 0.549 H 291.3204 5.383 0.006 6.258 0.001 6.817 0.006 0.875 0.559 H 292.3721 5.379 0.005 6.253 0.001 6.818 0.007 0.874 0.564 H 293.6211 5.389 0.020 ----- ----- ----- ----- ----- ----- KH 293.6753 5.395 0.006 6.266 0.006 ----- ----- 0.871 ----- PR 294.3499 5.382 0.001 6.265 0.028 6.809 0.019 0.883 0.544 H 294.6089 5.397 0.020 ----- ----- ----- ----- ----- ----- KH 295.5944 5.398 0.004 ----- ----- ---- ----- ----- ----- R1 295.6389 5.367 0.009 ----- ----- ----- ----- ----- ----- R1 297.3463 5.395 0.003 6.244 0.001 6.802 0.002 0.850 0.557 H 297.5918 5.394 0.010 ----- ----- ----- ----- ----- ----- KH 298.6279 5.407 0.005 ----- ----- ----- ----- ----- ----- KH 298.6929 5.391 0.006 6.265 0.006 ----- ----- 0.874 ----- PR 299.3964 5.389 0.002 6.266 0.005 6.808 0.002 0.877 0.543 H 300.3960 5.390 0.003 6.264 0.008 6.811 0.001 0.874 0.546 H 300.6001 5.407 0.020 ----- ----- ----- ----- ----- ----- KH 300.5958 5.344 0.005 ----- ----- ----- ----- ----- ----- R1 300.6514 5.370 0.001 ----- ----- ----- ----- ----- ----- R1 302.5928 5.382 0.020 ----- ----- ----- ----- ----- ----- KH 304.6099 5.334 0.010 ----- ----- ----- ----- ----- ----- KH 305.6194 5.363 0.011 ----- ----- ----- ----- ----- ----- R1 309.3703 5.374 0.004 6.216 0.002 6.768 0.006 0.842 0.552 H 309.6257 5.396 0.017 ----- ----- ----- ----- ----- ----- R1 309.7368 5.371 0.002 ----- ----- ----- ----- ----- ----- W 310.7012 5.369 0.002 ----- ----- ----- ----- ----- ----- W 311.5910 5.388 0.007 ----- ----- ----- ----- ----- ----- R1 313.3709 5.369 0.001 6.248 0.003 6.788 0.004 0.880 0.539 H 314.3155 5.378 0.001 6.257 0.003 6.785 0.005 0.879 0.528 H 318.5507 5.376 0.001 ----- ----- ----- ----- ----- ----- R1 319.3711 5.375 0.002 6.248 0.002 6.790 0.002 0.874 0.542 H 320.3466 5.374 0.002 6.256 0.004 6.793 0.005 0.883 0.536 H 321.3323 5.368 0.005 6.248 0.004 6.791 0.004 0.880 0.543 H 323.3506 5.378 0.004 6.243 0.001 6.784 0.001 0.866 0.540 H 323.5646 5.356 0.012 ----- ----- ----- ----- ----- ----- R1 323.6076 5.365 0.003 ----- ----- ----- ----- ----- ----- R1 323.6201 5.362 0.004 ----- ----- ----- ----- ----- ----- R1 324.3502 5.379 0.003 6.242 0.002 6.788 0.006 0.863 0.545 H 325.5486 5.355 0.006 ----- ----- ---- ----- ----- ----- R1 325.5604 5.364 0.007 ----- ----- ----- ----- ----- ----- R1 325.5993 5.369 0.014 ----- ----- ----- ----- ----- ----- R1 328.3458 5.368 0.003 6.236 0.002 6.779 0.003 0.867 0.543 H 329.5590 5.351 0.008 ----- ----- ----- ----- ----- ----- R1 329.5736 5.345 0.027 ----- ----- ----- ----- ----- ----- R1 329.6028 5.355 0.007 ----- ----- ----- ----- ----- ----- R1 333.3824 5.368 0.002 6.232 0.001 6.777 0.003 0.864 0.544 H 336.3177 5.367 0.004 6.229 0.007 6.773 0.009 0.862 0.544 H 336.5376 5.353 0.005 ----- ----- ----- ----- ----- ----- L 337.5483 5.366 0.005 ----- ----- ----- ----- ----- ----- L 338.5737 5.358 0.007 ----- ----- ----- ----- ----- ----- R2 340.3828 5.376 0.001 6.233 0.005 6.783 0.002 0.857 0.549 H 344.5073 5.365 0.005 ----- ----- ----- ----- ----- ----- L 345.5068 5.364 0.005 ----- ----- ----- ----- ----- ----- L 346.5562 5.360 0.004 ----- ----- ----- ----- ----- ----- R2 348.5244 5.372 0.005 ----- ----- ----- ----- ----- ----- L 349.5366 5.373 0.005 ----- ----- ----- ----- ----- ----- L 350.5332 5.380 0.010 ----- ----- ----- ----- ----- ----- L 350.5474 5.369 0.013 ----- ----- ----- ----- ----- ----- R2 351.5415 5.385 0.005 ----- ----- ----- ----- ----- ----- L 355.5479 5.384 0.005 ----- ----- ----- ----- ----- ----- R2 358.5005 5.393 0.005 ----- ----- ----- ----- ----- ----- L 359.5195 5.396 0.005 ----- ----- ----- ----- ----- ----- L 364.5220 5.381 0.005 ----- ----- ----- ----- ----- ----- L 364.5439 5.387 0.005 ----- ----- ----- ----- ----- ----- R2 365.5361 5.361 0.009 ----- ----- ----- ----- ----- ----- R2 374.5467 5.370 0.010 ----- ----- ----- ----- ----- ----- L 375.5315 5.378 0.005 ----- ----- ----- ----- ----- ----- L 376.5072 5.358 0.005 ----- ----- ----- ----- ----- ----- L 378.5295 5.348 0.005 ----- ----- ----- ----- ----- ----- L 386.4860 5.372 0.005 ----- ----- ----- ----- ----- ----- L 388.4988 5.384 0.005 ----- ----- ----- ----- ----- ----- L 392.4975 5.371 0.005 ----- ----- ----- ----- ----- ----- L 397.5688 5.368 0.005 ----- ----- ----- ----- ----- ----- L 403.5200 5.368 0.005 ----- ----- ----- ----- ----- ----- L 406.4863 5.366 0.005 ----- ----- ----- ----- ----- ----- L 408.5494 5.382 0.005 ----- ----- ----- ----- ----- ----- L 416.4897 5.388 0.005 ----- ----- ----- ----- ----- ----- L 421.4874 5.368 0.005 ----- ----- ----- ----- ----- ----- L Observer Code PR Percy and Richer H Harmanec et al W Wasson KH Kelsey and Hoff R1 Reisenweber (using 22 Cyg as comparison) R2 Reisenweber (using 21 Cyg as comparison) L Landis Some of the observations are nightly means of two or more individual observations. There is no evidence for hour-to-hour variations.