COMMISSION 27 OF THE I. A. U. INFORMATION BULLETIN ON VARIABLE STARS NUMBER 513 Konkoly Observatory Budapest, 1971 January 30 TIMES OF MAXIMUM FOR MIRA VARIABLES During an investigation by one of us (T.G.B.) of the near infrared photometric properties of Mira variables, photoelectric light curves were obtained near maximum for a large number of Miras during the period July 1968 - June 1970. Times of maximum visual light were determined from all suitable light curves. These times of maximum may be useful to others for predicting future maxima as well as for computing phases of observations taken in the recent past. Table I gives the Julian Date of the maximum in the V light curve and the period (1) for each variable. The accuracy of the determinations is typically +-0.03 in phase. A colon denotes those dates reliable between +-0.05 and +-0.10 in phase and a double colon these reliable only to +-0.10 in phase. Table I ------------------------------------ STAR PERIOD JD-2440000 ------------------------------------ T Cas 445.0d 600 R And 409.2 229 Y Cep 332.62 466 U Cas 277.59 476 RW And 429.27 469 W Cas 405.0 555: X Psc 352.6 216 UZ And 314.36 447: RZ Per 353.52 545 R Psc 344.14 432: SX And 334.6 234 Y And 220.42 229: U Per 320.63 262 o Cet 331.62 120 331.62 465 R Cet 166.23 441: RR Per 390.14 264 R Tri 266.40 670 U Ari 371.44 220 371.44 607 Y Per 252.30 239:: R Tau 324.34 125: T Cam 373.98 150 RX Tau 335.06 647: X Cam 143.40 218 S Boo 270.69 87 270.69 336 R Cam 269.70 478 R Boo 223.34 283 RR Boo 194.62 110 194.62 324 Y Lib 274.74 703 S CrB 360.68 259 S UMi 326.16 327 X CrB 240.87 95 240.87 346: R Her 318.45 315 U Ser 238.2 431: 238.2 671 RU Her 484.46 96 U Her 406.02 94 S Oph 233.53 379: T Oph 366.98 391 SS Her 107.30 440 W Her 279.76 340 R Dra 245.55 84 245.55 330:: S Her 307.40 466 SS Oph 180.14 387 SY Her 116.9 437 116.9 674 RT Her 298.49 353: Z Oph 348.49 479 RS Her 219.46 114 219.46 331 RU Oph 202.39 445 T Dra 421.67 116 RY Her 221.37 340 V Dra 277.63 285: T Her 165.00 372 165.00 707 W Dra 262.1 489: RY Oph 150.49 92 150.49 393 TV Her 303.49 357 W Lyr 196.40 334 BC Oph 306.97 435 SV Her 239.38 404 T Ser 340.3 424 X Oph 334.22 124 334.22 458 RY Lyr 325.71 461 ST Sgr 395.21 460 R Aql 300.3 333 V Lyr 373.61 352: U Dra 317.31 520 V Tau 169.80 217 W Aur 274.46 694 S Ori 416.33 215 416.33 636 RU Aur 467.70 656 Z Tau 494.13 640 X Aur 163.93 635 V Aur 353.59 262 V Mon 334.69 231 U Lyn 436.03 319 S Lyn 297.71 221 X Gem 263.47 621 Y Mon 230.90 637 R Lyn 378.61 242 R CMi 337.93 638 RR Mon 393.45 285 S CMi 332.20 220 S Gem 293.63 659 T Gem 287.61 701 R Cnc 362.06 231 V Cnc 272.14 228 U Cnc 304.99 316 304.99 639 X UMa 248.95 707 S Hya 256.71 665 Y Dra 325.81 230 RS Leo 208.0 637 R LMi 372.34 225 S LMi 234.10 368: V Leo 273.42 246 S Sex 262.9 619 RU UMa 252.44 383 252.44 633 R Com 362.20 238: SU Vir 210.16 326 T Vir 339.24 277 R Crv 316.74 244: SS Vir 354.66 263 354.66 653 Y Vir 218.68 339: T UMa 256.88 481 R Vir 145.61 309 RS UMa 259.59 314 U Vir 206.78 394 V Vir 249.67 664 RR UMa 230.68 382 R CVn 328.17 290 Z Boo 281.23 245 Z Vir 306.64 348 306.64 661 U UMi 326.48 460 R Sgr 268.56 406 S Sgr 230.71 468 U Lyr 457.34 688 RT Aql 327.13 715 R Cyg 426.32 326 RV Aql 218.72 437: RT Cyg 190.44 407: X Aql 347.55 453 Z Cyg 263.77 411 WX Cyg 410.60 480 CN Cyg 198.58 410: U Cyg 464.69 354: ST Cyg 336.01 417 S Del 277.22 104 V Cyg 421.27 680 X Del 281.29 423 RS Aqr 214.89 431 T Cep 389.27 255 389.27 622 WY Cyg 303.90 579 RT Peg 215.49 443 RV Peg 389.0 473 S Lac 239.98 429 SS Peg 416.4 136 416.4 536 SZ And 343.78 476 RW Peg 208.62 455: R Peg 377.53 204: UZ Cep 297.1 654 RY Cep 148.96 648 R Aqr 386.92 467 WY Cas 477.4 472 R Cas 431.2 186 Z Peg 325.43 447 ------------------------------ 1. Kukarkin, B.V. Parenago, P.P., Efremov, Yu.I., and Kholopov, P.N. 1958, General Catalogue of Variable Stars (2d ed.; Moscow: Academy of Sciences of the U.S.S.R.). Thomas G. Barnes * and Bobbe M. Barnes * David Dunlap Observatory Richmond Hill, Ontario, Canada * Now at the University of Texas, Austin, Texas.