PAGE i OBSERVED MINIMA TIMINGS OF ECLIPSING BINARIES NUMBER 9 Prepared by: Marvin E. Baldwin Chairman, AAVSO Eclipsing Binary Committee Gerard Samolyk AAVSO Eclipsing Binary Committee August 2004 ------------------------------------------------------------------------ PAGE ii Funds for publication were provided by The Harold S. Martin Fund. ISBN 1-878174-68-1 COPYRIGHT 2004 The American Association of Variable Star Observers 25 Birch Street Cambridge, MA 02138 USA All rights reserved. No part of this book may be reproduced by any mechanical, photographic, or electronic process, nor may it be stored on an information retrieval system, transmitted, or otherwise copied for public or private use, without the written permission of the American Association of Variable Star Observers. ------------------------------------------------------------------------ PAGE iii TABLE OF CONTENTS Introduction...............................................v References................................................vi Table 1. Publications Containing Previous AAVSO Minima for Each Star in this Monograph.................vii Table 2. Information on O-C Minima and Linear Elements..viii Table 3. Observers Contributing to this Monograph.........ix Compilation of Times of Minima and O-C Diagrams............1 ------------------------------------------------------------------------ PAGE iv is blank ------------------------------------------------------------------------ PAGE v INTRODUCTION This compilation contains 708 minima timings of 50 eclipsing binary stars. It represents a portion of the stars observed by participants in the AAVSO's eclipsing binary program since 1976, and continues the listing of minima published in Observed Minima Timings of Eclipsing Binaries Nos. 1 through 8. Except where otherwise specified, all minima are determined from visual observations reduced by the authors using a computerized tracing paper method. Ron Baldwin and Gerard Samolyk wrote the tracing paper software specifically for this purpose. Some CCD observations were reduced by the observers using the method of Kwee and Van Worden (1957). The standard error is included in each of these cases. In instances where fragments of eclipses are observed during different cycles, the data points are reduced to heliocentric phase and combined into a single light curve for the tracing paper process. In these cases, the listed time of minimum is the eclipse nearest to the midpoint of the observing interval that corresponds to the calculated phase of minimum light. A footnote is added to these listings indicating the observing interval in JD. The linear elements in the General Catalogue of Variable Stars (Kholopov et al. 1985) were used to compute the cycle and O-C for each time of minimum. All elements used in this publication are listed in Table 2. The number of observations used for determination of each time of minimum is given under N. This work is sponsored by the AAVSO, with Marvin Baldwin acting as program coordinator. The O-C diagrams accompanying the minima listings represent not only the minima tabulated here but also all previously published minima associated with the AAVSO program. Times of minimum obtained electronically that have four-place accuracy are circled on the O-C diagrams. The years spanned by these diagrams are listed by star in Table 2, with the second column giving the year of the earliest observation appearing in the diagram and the third and fourth columns listing the earliest and latest year of the minima tabulated in this publication. The material in this monograph may be accessed electronically via the AAVSO web site home page (http://www.aavso.org) or the AAVSO ftp site (ftp.aavso.org/monographs/eb/). Observers contributing data used in this publication are listed in Table 3. Their dedicated efforts are greatly appreciated. Marvin E. Baldwin Gerard Samolyk 8655 N Co. Rd. 775E 9504 W Barnard Ave. Butlerville, IN 47223 Greenfield, WI 53228 USA USA ------------------------------------------------------------------------ PAGE vi REFERENCES 1 Ashbrook, J. 1963, Sky & Telescope, 25, 5,277. 2 Ashbrook, J. 1963, Sky & Telescope, 26, 3,153. 3 Ashbrook, J. 1964, Sky & Telescope, 27,1, 58. 4 Ashbrook, J. 1964, Sky & Telescope, 27, 5, 317. 5 Ashbrook, J. 1964, Sky & Telescope, 28, 10, 244. 6 Ashbrook, J. 1965, Sky & Telescope, 29, 4, 254. 7 Robinson, L. J. 1965, Inf. Bull. Var. Stars, No. 111. 8 Robinson, L. J. 1965, Inf. Bull. Var. Stars, No. 114. 9 Robinson, L. J. 1965, Inf. Bull. Var. Stars, No. 119. 10 Robinson, L. J. 1966, Inf. Bull. Var. Stars, No. 129. 11 Robinson, L. J. 1966, Inf. Bull. Var. Stars, No. 154. 12 Robinson, L. J. 1967, Inf. Bull. Var. Stars, No. 180. 13 Robinson, L. J. 1967, Inf. Bull. Var. Stars, No. 221. 14 Robinson, L. J., and Ashbrook, J. 1968, Inf. Bull. Var. Stars, No. 247. 15 Baldwin, M. E. 1973, Inf. Bull. Var. Stars, No. 795. 16 Baldwin, M. E. 1974, J. Amer. Assoc. Var. Star Obs., 3, 60. 17 Baldwin, M. E. 1975, J. Amer. Assoc. Var. Star Obs., 4, 86. 18 Baldwin, M. E. 1976, J. Amer. Assoc. Var. Star Obs., 5, 29. 19 Baldwin, M. E. 1976, J. Amer. Assoc. Var. Star Obs., 5, 84. 20 Baldwin, M. E. 1977, J. Amer. Assoc. Var. Star Obs., 6, 24. 21 Baldwin, M. E. 1978, J. Amer. Assoc. Var. Star Obs., 7, 28. 22 Baldwin, M. E., and Samolyk, G. 1993, Observed Minima Timings of Eclipsing Binaries No. 1, AAVSO, Cambridge, MA. 23 Baldwin, M. E., and Samolyk, G. 1995, Observed Minima Timings of Eclipsing Binaries No. 2, AAVSO, Cambridge, MA. 24 Baldwin, M. E., and Samolyk, G. 1996, Observed Minima Timings of Eclipsing Binaries No. 3, AAVSO, Cambridge, MA. 25 Baldwin, M. E., and Samolyk, G. 1997, Observed Minima Timings of Eclipsing Binaries No. 4, AAVSO, Cambridge, MA. 26 Baldwin, M. E., and Samolyk, G. 1999, Observed Minima Timings of Eclipsing Binaries No. 5, AAVSO, Cambridge, MA. 27 Baldwin, M. E., and Samolyk, G. 2000, Observed Minima Timings of Eclipsing Binaries No. 6, AAVSO, Cambridge, MA. 28 Baldwin, M. E., and Samolyk, G. 2002, Observed Minima Timings of Eclipsing Binaries No. 7, AAVSO, Cambridge, MA. 29 Baldwin, M. E., and Samolyk, G. 2003, Observed Minima Timings of Eclipsing Binaries No. 8, AAVSO, Cambridge, MA. 30 Kholopov, P. N., et al. 1985, General Catalogue of Variable Stars, Fourth Edition, Moscow. 31 Kwee K. K., and Van Worden, H. 1957, Bull. Astron. Inst. Netherlands, 12, 327. ------------------------------------------------------------------------ PAGE vii TABLE 1 [note that ascii version of table is wider than 80 characters] 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 RT AND X X X X X X X X X X X X X X X X X X X X X XZ AND X X X X X X X X X X X X X X X X AD AND X BD AND X OO AQL X X X X X X X X X X X X X X X X X X X X X RY AUR WW AUR X X X X X X X X X X X X X X X X AR AUR X X X X X X X X X CL AUR EP AUR X X UW BOO X VW BOO X YY CMI TY CAP RZ CAS X X X X X X X X X X X X X X X X X X X X X X X X X TW CAS IS CAS V375 CAS V380 CAS SU CEP X WZ CEP X EG CEP X X X X X X X X X X X X ZZ CYG X X X X X X X X X X X X V401 CYG YY DEL X X X X X X X YY ERI X X X X X X X X X X X X RW GEM X X X SZ HER X X X X X X X X X X X X X X X X X X X X X X TT HER AV HYA X X DI HYA DG LAC T LMI X X X X X BB MON ER ORI X X X X X X X X X X TY PEG X X X X UX PEG X X BX PEG X AE PHE U SGE X X X X X X X X X X RS SER CC SER TY TAU X TRI X X X X X X X X X X X X X X X X X RV TRI X X X X W UMA X X X X X X X X X X X X TX UMA X X X X X X X AK VIR AW VIR BO VUL X X This table identifies publications in which previous AAVSO minima for each star have been published. The numbers across the top of the table correspond to those given at the beginning of each entry in the References. ------------------------------------------------------------------------ PAGE viii TABLE 2 Earliest Earliest Latest Epoch Period Minimum Listing Listing 2400000 + (Days) RT AND 1963 2002 2004 41141.88902 0.628929513 XZ AND 1950 2000 2003 23977.1915 1.357278 AD AND 1976 1997 2004 39002.4516 0.9861958 BD AND 1976 1996 2004 34962.400 0.4629023 OO AQL 1960 2001 2004 38613.2222 0.50678848 RY AUR 1977 1977 2004 38289.563 2.725391 WW AUR 1962 2000 2003 32945.53930 2.52501922 AR AUR 1965 1998 2004 38402.1832 4.134695 CL AUR 1977 1977 2004 32967.262 1.2443645 EP AUR 1975 1995 2004 26309.382 0.5910080 UW BOO 1977 1996 2003 42404.713 1.0047108 VW BOO 1977 1998 2004 31173.406 0.3423253 YY CMI 1977 1977 2004 28023.147 1.0940197 TY CAP 1976 1976 2003 44793.452 1.4234498 RZ CAS 1961 2002 2004 43200.3063 1.195247 TW CAS 1976 1976 2003 42008.3873 1.4283240 IS CAS 1977 1977 2003 28776.263 1.8415124 V375 CAS 1976 1976 2003 34642.255 1.47338431 V380 CAS 1977 1977 2003 25645.505 1.357273 SU CEP 1977 1996 2004 26325.465 0.9014011 WZ CEP 1977 1996 2004 28040.556 0.4174471 EG CEP 1966 2002 2004 42594.3825 0.54462183 ZZ CYG 1965 2000 2003 45000.3570 0.62861644 V401 CYG 1977 1977 2004 43835.259 0.5827220 YY DEL 1966 2000 2003 42959.512 0.7930922 YY ERI 1968 2002 2004 41581.624 0.32149415 RW GEM 1970 1996 2003 18302.655 2.8654972 SZ HER 1959 2002 2004 41864.30517 0.81809828 TT HER 1977 1977 2004 39995.908 0.91207546 AV HYA 1975 1992 2004 36673.376 0.6834062 DI HYA 1978 1978 2004 31194.131 0.6147132 DG LAC 1976 1976 2004 44509.387 2.206534 T LMI 1966 1996 2004 45397.368 3.019885 BB MON 1978 1978 2004 26681.5628 0.7326988 ER ORI 1968 2002 2004 41626.415 0.4233987 TY PEG 1968 1995 2003 40451.784 3.092220 UX PEG 1967 1976 2002 40425.479 1.544617 BX PEG 1976 1996 2003 44195.3771 0.2804208 AE PHE 1994 1994 2003 43732.8819 0.362377 U SGE 1965 1993 2003 17130.4114 3.38061933 RS SER 1981 1981 1999 34921.838 0.598140369 CC SER 1977 1977 2004 37481.570 0.5160062 TY TAU 2000 2000 2004 21192.395 1.0773555 X TRI 1960 2002 2004 42502.721 0.9715352 RV TRI 1975 2000 2002 46033.308 0.75366648 W UMA 1966 1999 2004 45765.7385 0.33363749 TX UMA 1966 1996 2004 44998.1475 3.0632382 AK VIR 1977 1977 2004 42576.408 1.1935981 AW VIR 1978 1978 2004 45022.645 0.35399695 BO VUL 1976 1999 2003 35989.431 1.945869 The O-C diagrams for each star contain the minima spanning the years in columns two and four. The listing of new minima spans the years in columns three and four. The fifth and sixth columns contain the linear elements used to calculate the O-C values in this publication. All of these elements are from the General Catalogue of Variable Stars (Kholopov et al. 1985) except where noted. ------------------------------------------------------------------------ PAGE ix TABLE 3 W. Anthony 1 C. Limbach (CCD) 1 P. Atwood 1 G. Lubcke (CCD) 12 1) Bal-Mai (CCD) 9 A. MacRobert 1 M. Baldwin 50 B. Manske 7 R. Berg 2 B. Manske (CCD) 1 J. Bialozynski (CCD) 7 D. Matsnev 1 J. Blackwell (CCD) 1 J. McKenna 4 N. Butterworth (CCD) 1 M. Nall 1 G. Chaple 10 M. Nicholas (CCD) 2 S. Cook 6 R. Papini (CCD) 1 S. Cook (CCD) 23 R. Poklar (CCD) 7 M. Csukas 1 D. Ruokonen 2 S. Diesso (CCD) 1 A. Sajtz 1 S. Dvorak (CCD) 51 G. Samolyk 181 A. Filho 1 G. Samolyk (CCD) 117 S. Foglia 20 G. Sarty 3 H. Gerner (CCD) 2 R. Schmude 4 P. Goodwin 2 N. Simmons 1 G. Hanson 5 N. Simmons (CCD) 2 R. Hays 19 M. Simonsen 6 C. Hesseltine 2 C. Stephan 48 C. Hesseltine (CCD) 14 J. Virtanen 3 R. Hill 24 G. Wedemayer 4 J. A. Howell (CCD) 5 D. Weier 3 S. Jamieson (CCD) 1 D. Weier (CCD) 1 S. Kracenicki 3 D. Williams 31 P. Kuebler (CCD) 1 47 Observers Total 708 1) CCD observations by the team of L. Baldinelli and A. Maitan This table lists the observers and the number of minima contributed by each. CCD stands for Charge-Coupled Device. ------------------------------------------ RT AND JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 52504.7541 18067 -0.0044 21 G. Samolyk (CCD) 0.0002 52511.675 18078 -0.002 12 M. Simonsen 52544.375 18130 -0.006 14 J. Virtanen 52552.553 18143 -0.004 11 C. Stephan 52569.535 18170 -0.003 16 G. Chaple 52577.7089 18183 -0.0055 132 M. Nicholas (CCD) 0.0001 52586.5141 18197 -0.0053 66 S. Dvorak (CCD) 0.0001 52586.525 18197 0.006 12 C. Stephan 52589.6629 18202 -0.0011 82 M. Nicholas (CCD) 0.0005 52609.7851 18234 -0.0047 28 G. Samolyk (CCD) 0.0001 52931.7962 18746 -0.0055 33 G. Samolyk (CCD) 0.0001 52994.688 18846 -0.007 17 G. Samolyk 53057.5818 18946 -0.0058 27 G. Samolyk (CCD) 0.0001 ---------------------------------------------------------------- XZ AND JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 51874.790 20554 0.106 16 R. Hill 51881.5782 20559 0.1083 51 S. Dvorak (CCD) 0.0004 52219.550 20808 0.118 16 G. Samolyk 52223.620 20811 0.116 21 M. Baldwin 52250.771 20831 0.121 9 M. Simonsen 52497.800 21013 0.126 11 D. Williams 52531.728 21038 0.122 13 R. Hill 52531.732 21038 0.126 6 G. Sarty 52542.5899 21046 0.1256 41 G. Samolyk (CCD) 0.0001 52546.664 21049 0.128 14 M. Baldwin 52580.595 21074 0.127 28 G. Chaple 52637.605 21116 0.131 20 C. Stephan 52934.842 21335 0.124 20 R. Hill 52975.5716 21365 0.1356 60 J. Bialozynski (CCD) 0.0001 52975.5716 21365 0.1356 69 S. Dvorak (CCD) 0.0001 52994.580 21379 0.142 18 G. Samolyk ------------------------------------------ AD AND JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 50700.647 2) 11862 -0.059 20 S. Cook (CCD) 51095.6217 12262.5 -0.0559 77 G. Samolyk (CCD) 0.0002 51099.5669 12266.5 -0.0555 46 G. Samolyk (CCD) 0.0008 51488.6216 12661 -0.0550 49 G. Samolyk (CCD) 0.0011 51813.5869 12990.5 -0.0412 86 G. Samolyk (CCD) 0.0002 52169.6114 13351.5 -0.0334 72 S. Dvorak (CCD) 0.0002 52209.5536 13392 -0.0322 68 S. Dvorak (CCD) 0.0001 52239.6333 13422.5 -0.0314 55 S. Dvorak (CCD) 0.0002 52245.5511 13428.5 -0.0308 65 G. Samolyk (CCD) 0.0004 52282.5341 13466 -0.0301 60 S. Dvorak (CCD) 0.0002 52517.7443 13704.5 -0.0276 45 G. Samolyk (CCD) 0.0005 52637.5654 13826 -0.0293 19 G. Samolyk (CCD) 0.0009 52923.5681 14116 -0.0234 57 G. Samolyk (CCD) 0.0004 53201.6737 14398 -0.0250 50 G. Samolyk (CCD) 0.0004 2) Observations combined from 50700 to 50701 ------------------------------------------ BD AND JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 50370.591 33286 0.025 14 G. Samolyk 51100.5766 34863 0.0137 66 G. Samolyk (CCD) 0.0003 51156.5923 34984 0.0182 36 G. Samolyk (CCD) 0.0003 51805.5745 36386 0.0114 41 G. Samolyk (CCD) 0.0002 52179.5983 37194 0.0102 40 G. Samolyk (CCD) 0.0003 52185.6164 37207 0.0105 40 S. Dvorak (CCD) 0.0003 52210.6135 37261 0.0109 74 G. Samolyk (CCD) 0.0004 52230.5180 37304 0.0106 43 S. Dvorak (CCD) 0.0001 52489.7406 37864 0.0079 52 G. Samolyk (CCD) 0.0003 52552.6952 38000 0.0078 17 S. Dvorak (CCD) 0.0002 52883.6728 38715 0.0103 37 G. Samolyk (CCD) 0.0002 52958.6636 38877 0.0109 16 S. Dvorak (CCD) 0.0001 53189.6545 39376 0.0135 48 G. Samolyk (CCD) 0.0004 ------------------------------------------ OO AQL JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 52210.623 26830.5 0.012 13 G. Samolyk 52223.551 26856 0.017 12 C. Stephan 52225.587 26860 0.026 18 G. Samolyk 52426.770 27257 0.014 14 N. Simmons 52426.783 27257 0.027 10 B. Manske 52426.784 27257 0.028 18 G. Samolyk 52458.706 27320 0.023 15 R. Hays 52472.3866 27347 0.0198 19 Bal-Mai (CCD) 0.0008 52489.6180 27381 0.0204 29 G. Samolyk (CCD) 0.0002 52496.706 27395 0.013 17 C. Stephan 52497.732 27397 0.026 12 D. Williams 52561.583 27523 0.021 13 R. Hays 52562.5961 27525 0.0210 42 G. Samolyk (CCD) 0.0001 52830.691 28054 0.025 16 C. Stephan 52833.732 28060 0.025 15 D. Williams 52850.9624 28094 0.0246 271 N. Butterworth (CCD) 0.0001 52869.7139 28131 0.0250 55 R. Poklar (CCD) 0.0001 52897.589 28186 0.027 18 C. Stephan 52915.5791 28221.5 0.0258 36 R. Poklar (CCD) 0.0001 52918.629 : 28227.5 0.035 10 C. Stephan 52939.649 28269 0.023 14 C. Stephan 52968.532 28326 0.019 12 R. Hays 53184.4336 28752 0.0290 100 R. Papini (CCD) 0.0002 53197.8621 28778.5 0.0276 27 B. Manske (CCD) 0.0003 ------------------------------------------ RY AUR JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 43170.745 1791 0.007 17 G. Wedemayer 44598.856 2315 0.013 18 G. Samolyk 46814.604 3128 0.018 20 G. Samolyk 47539.564 3394 0.024 14 G. Samolyk 49283.813 4034 0.023 19 G. Samolyk 49373.749 4067 0.021 17 R. Hill 49801.635 4224 0.020 18 G. Samolyk 51488.657 4843 0.025 15 G. Samolyk 51586.7686 4879 0.0229 49 G. Samolyk (CCD) 0.0003 52619.6913 5258 0.0224 49 S. Jamieson (CCD) 0.0001 53017.6032 5404 0.0272 27 G. Samolyk (CCD) 0.0003 ------------------------------------------ WW AUR JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 51879.394 7498.5 -0.002 11 S. Foglia 51904.647 7508.5 0.001 23 G. Samolyk 51957.667 7529.5 -0.005 21 G. Samolyk 51986.710 7541 0.001 17 G. Samolyk 52000.604 7546.5 0.007 10 R. Schmude 52023.316 7555.5 -0.006 13 S. Foglia 52616.715 7790.5 0.013 24 G. Samolyk 52640.693 7800 0.004 19 G. Samolyk 52678.581 7815 0.016 21 G. Samolyk 52986.628 7937 0.011 21 G. Samolyk 52996.719 7941 0.002 29 G. Samolyk ------------------------------------------ AR AUR JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 51157.643 3085 -0.074 11 J. McKenna 51496.668 3167 -0.094 22 M. Baldwin 51496.679 3167 -0.083 14 G. Samolyk 51519.405 3172.5 -0.098 31 S. Foglia 51550.385 : 3180 -0.128 17 S. Foglia 51895.664 3263.5 -0.096 20 G. Samolyk 51957.686 3278.5 -0.095 21 G. Samolyk 51986.644 3285.5 -0.080 11 D. Weier 51986.647 3285.5 -0.077 9 B. Manske 51986.651 3285.5 -0.073 16 G. Samolyk 52253.311 : 3350 -0.100 9 S. Foglia 52263.663 3352.5 -0.085 24 G. Samolyk 52662.646 3449 -0.100 25 G. Samolyk 52691.5846 3456 -0.1045 145 G. Lubcke (CCD) 0.0002 52999.607 3530.5 -0.117 16 B. Manske 52999.626 3530.5 -0.098 23 G. Samolyk 53061.641 3545.5 -0.103 17 G. Samolyk ------------------------------------------ CL AUR JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 43219.624 8239 0.043 14 G. Samolyk 44957.981 9636 0.023 29 G. Samolyk 46804.652 11120 0.057 19 G. Samolyk 46814.611 11128 0.061 17 G. Samolyk 47950.714 12041 0.059 19 G. Samolyk 50521.608 14107 0.096 28 G. Chaple 50873.776 14390 0.109 20 R. Hill 51570.6077 14950 0.0964 38 G. Samolyk (CCD) 0.0003 51871.748 15192 0.101 20 R. Hill 52013.5998 15306 0.0948 54 G. Samolyk (CCD) 0.0002 52609.6521 15785 0.0965 44 G. Samolyk (CCD) 0.0001 52690.5364 15850 0.0971 11 G. Lubcke (CCD) 0.0002 52731.5986 15883 0.0952 40 G. Samolyk (CCD) 0.0007 52986.6982 16088 0.1001 66 G. Samolyk (CCD) 0.0002 53062.6057 16149 0.1014 42 J. Bialozynski (CCD) 0.0002 ------------------------------------------ EP AUR JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 49754.668 39670 -0.001 13 G. Samolyk 50488.688 40912 -0.013 17 G. Samolyk 51160.667 42049 -0.010 13 G. Samolyk 51579.706 42758 0.004 15 G. Samolyk 51582.640 42763 -0.017 19 G. Samolyk 51881.7128 43269 0.0056 60 G. Samolyk (CCD) 0.0002 51991.6361 43455 0.0015 56 S. Dvorak (CCD) 0.0003 52222.7248 43846 0.0060 56 S. Dvorak (CCD) 0.0001 52252.857 43897 -0.003 23 G. Samolyk 52296.6013 43971 0.0065 70 G. Samolyk (CCD) 0.0002 52316.685 44005 -0.004 18 G. Samolyk 52319.647 44010 0.003 19 G. Samolyk 52689.6232 44636 0.0081 66 G. Lubcke (CCD) 0.0001 53046.5916 45240 0.0077 45 G. Samolyk (CCD) 0.0005 ------------------------------------------ UW BOO JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 50277.633 : 7836 0.006 11 S. Cook (CCD) 50278.636 7837 0.004 9 D. Williams 50280.643 : 7839 0.002 14 S. Cook (CCD) 50281.648 7840 0.002 8 S. Cook (CCD) 50284.677 7843 0.017 17 G. Samolyk 50502.702 8060 0.020 6 S. Cook (CCD) 50703.623 : 8260 -0.001 10 S. Cook (CCD) 51775.651 9327 0.000 14 D. Williams 52416.6522 9965 -0.0039 30 S. Dvorak (CCD) 0.0002 52844.6581 10391 -0.0048 32 R. Poklar (CCD) 0.0005 52849.6807 10396 -0.0058 68 R. Poklar (CCD) 0.0002 ------------------------------------------ VW BOO JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 50921.739 57689 -0.071 19 G. Samolyk 51309.771 58822.5 -0.065 11 M. Baldwin 51318.682 58848.5 -0.054 20 M. Baldwin 52042.692 : 60963.5 -0.062 4 D. Weier 52049.516 3) 60983.5 -0.085 31 S. Cook 52069.718 61042.5 -0.080 18 B. Manske 52077.757 61066 -0.086 16 B. Manske 52384.8175 61963 -0.0911 17 S. Dvorak (CCD) 0.0003 52406.7249 62027 -0.0925 26 S. Dvorak (CCD) 0.0003 52435.649 62111.5 -0.095 16 C. Stephan 52785.6684 63134 -0.1031 63 G. Samolyk (CCD) 0.0003 53176.7660 64276.5 -0.1121 36 G. Samolyk (CCD) 0.0002 53185.6656 64302.5 -0.1130 50 J. Bialozynski (CCD) 0.0006 53197.6464 64337.5 -0.1136 31 H. Gerner (CCD) 0.0002 3) Observations combined from 52045 to 52054 ------------------------------------------ YY CMI JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 43190.640 13864 0.004 13 G. Samolyk 43190.659 13864 0.023 10 D. Ruokonen 44238.711 14822 0.004 13 G. Samolyk 44622.704 15173 -0.004 19 G. Hanson 44622.716 15173 0.008 11 G. Samolyk 45298.839 15791 0.027 21 G. Samolyk 46122.605 16544 -0.004 12 S. Cook 49037.642 19208.5 0.018 14 S. Cook 49416.7162 19555 0.0140 66 G. Lubcke (CCD) 0.0008 50096.642 20176.5 0.007 10 S. Cook (CCD) 50468.614 20516.5 0.012 10 S. Cook (CCD) 52662.6713 22522 0.0126 48 G. Samolyk (CCD) 0.0002 52708.6215 22564 0.0140 63 G. Samolyk (CCD) 0.0001 53035.7316 22863 0.0122 92 G. Samolyk (CCD) 0.0002 ------------------------------------------ TY CAP JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 43069.660 -1211 0.006 11 G. Samolyk 44101.657 -486 0.002 12 G. Samolyk 45264.628 331 0.014 10 G. Samolyk 45876.719 761 0.022 10 G. Samolyk 47465.282 1877 0.015 10 G. Samolyk 47688.778 2034 0.029 12 G. Samolyk 50723.586 4166 0.042 8 M. Baldwin 51486.557 4702 0.044 16 G. Samolyk 52182.6213 5191 0.0414 75 G. Samolyk (CCD) 0.0002 52448.8090 5378 0.0440 49 G. Samolyk (CCD) 0.0006 52468.7365 5392 0.0432 80 C. Hesseltine (CCD)0.0002 52525.6747 5432 0.0434 111 C. Hesseltine (CCD)0.0002 52861.6140 5668 0.0485 45 D. Weier (CCD) 0.0004 ------------------------------------------ RZ CAS JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 52346.378 7652 0.042 23 S. Kracenicki 52352.358 7657 0.045 13 S. Kracenicki 52652.365 7908 0.045 24 S. Foglia 52664.314 7918 0.042 10 S. Foglia 52695.390 7944 0.042 14 S. Foglia 52799.384 8031 0.049 9 A. Sajtz 52921.305 8133 0.055 24 S. Foglia 52959.549 8165 0.051 25 G. Chaple 52966.724 8171 0.054 23 C. Stephan 52982.261 8184 0.053 9 S. Foglia 52988.238 8189 0.054 7 S. Foglia 52996.607 8196 0.056 18 G. Samolyk 53001.388 8200 0.056 13 M. Csukas 53044.407 8236 0.046 16 S. Foglia ------------------------------------------ TW CAS JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 43069.635 743 0.003 12 G. Samolyk 44133.748 1488 0.015 13 G. Samolyk 44473.684 1726 0.009 11 G. Samolyk 44473.689 1726 0.014 14 G. Hanson 44593.671 1810 0.017 13 G. Samolyk 44623.651 1831 0.002 19 G. Hanson 46714.720 3295 0.005 15 G. Samolyk 47161.781 3608 0.001 13 G. Samolyk 48835.776 4780 0.000 14 G. Samolyk 48885.768 4815 0.001 15 G. Samolyk 49785.603 5445 -0.008 15 S. Cook (CCD) 50442.628 5905 -0.013 17 S. Cook (CCD) 50689.725 6078 -0.016 11 S. Cook (CCD) 52860.7766 7598 -0.0165 53 H. Gerner (CCD) 0.0002 52919.326 7639 -0.028 13 S. Foglia 52949.339 7660 -0.010 8 S. Foglia ------------------------------------------ IS CAS JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 43432.872 7959 0.012 16 G. Wedemayer 43701.739 8105 0.018 11 G. Samolyk 43701.745 8105 0.024 12 G. Wedemayer 44191.589 8371 0.026 13 G. Samolyk 44445.708 8509 0.016 15 G. Samolyk 44957.658 8787 0.026 8 G. Samolyk 46038.618 9374 0.018 19 G. Samolyk 52522.6166 12895 0.0512 55 G. Samolyk (CCD) 0.0002 52616.5345 12946 0.0520 58 G. Samolyk (CCD) 0.0002 52616.5347 12946 0.0522 28 G. Lubcke (CCD) 0.0001 52708.6109 12996 0.0527 42 G. Samolyk (CCD) 0.0009 52951.6923 13128 0.0545 53 G. Samolyk (CCD) 0.0002 52975.6322 13141 0.0548 50 G. Samolyk (CCD) 0.0003 ------------------------------------------ V375 CAS JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 43028.746 5692 -0.012 19 G. Samolyk 43420.669 5958 -0.010 10 G. Samolyk 44562.557 6733 0.005 12 G. Samolyk 45026.637 7048 -0.031 17 G. Samolyk 45521.711 7384 -0.014 14 G. Samolyk 47481.300 8714 -0.026 12 G. Samolyk 48154.642 9171 -0.021 16 G. Samolyk 49679.604 10206 -0.011 18 G. Samolyk 50370.624 10675 -0.009 17 G. Samolyk 52225.678 11934 0.055 25 G. Samolyk 52524.7985 12137 0.0781 95 G. Samolyk (CCD) 0.0007 52885.7977 12382 0.0982 28 G. Samolyk (CCD) 0.0006 52888.748 12384 0.102 16 B. Manske ------------------------------------------ V380 CAS JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 43330.755 13030 -0.017 11 D. Ruokonen 43330.775 13030 0.003 14 G. Samolyk 43778.657 13360 -0.015 14 G. Samolyk 44238.778 13699 -0.010 14 G. Samolyk 48219.634 16632 -0.036 17 G. Samolyk 51486.5710 19039 -0.0546 56 G. Samolyk (CCD) 0.0011 51490.638 19042 -0.059 17 S. Cook (CCD) 51919.5400 19358 -0.0557 66 G. Samolyk (CCD) 0.0004 52204.5686 19568 -0.0545 54 G. Samolyk (CCD) 0.0005 52550.670 19823 -0.058 14 S. Dvorak (CCD) 0.001 52979.5672 20139 -0.0587 70 G. Samolyk (CCD) 0.0004 ------------------------------------------ SU CEP JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 50192.765 4) 26478 0.002 32 S. Cook (CCD) 50284.712 26580 0.006 14 G. Samolyk 50320.769 26620 0.007 22 G. Samolyk 50376.657 26682 0.008 18 G. Samolyk 50687.634 27027 0.001 15 S. Cook (CCD) 50770.564 27119 0.003 19 G. Samolyk 51053.603 27433 0.002 13 S. Cook (CCD) 51097.785 27482 0.015 20 G. Samolyk 51839.636 28305 0.013 15 G. Samolyk 52076.6952 28568 0.0036 68 C. Hesseltine (CCD)0.0006 52149.702 28649 -0.003 16 G. Samolyk 52463.3957 28997 0.0030 11 Bal-Mai (CCD) 0.0009 53201.6463 29816 0.0061 51 G. Samolyk (CCD) 0.0002 4) Observations combined from 50055 to 50330 ------------------------------------------ WZ CEP JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 50370.616 53492 -0.020 15 G. Samolyk 50376.889 53507 -0.009 17 G. Samolyk 50642.7978 54144 -0.0140 70 P. Kuebler (CCD) 0.0002 51088.6282 55212 -0.0171 55 G. Samolyk (CCD) 0.0002 51452.6349 56084 -0.0243 33 G. Lubcke (CCD) 0.0003 51576.6148 56381 -0.0261 57 G. Samolyk (CCD) 0.0003 52146.8363 57747 -0.0374 38 S. Dvorak (CCD) 0.0003 52223.6456 57931 -0.0384 60 G. Samolyk (CCD) 0.0002 52239.5049 57969 -0.0420 33 S. Dvorak (CCD) 0.0002 52415.6677 58391 -0.0419 50 N. Simmons (CCD) 0.0003 52542.5700 58695 -0.0435 46 G. Samolyk (CCD) 0.0003 52603.5163 58841 -0.0445 37 S. Dvorak (CCD) 0.0001 52860.6585 59457 -0.0497 45 G. Samolyk (CCD) 0.0002 52899.6884 59550.5 -0.0511 38 G. Samolyk (CCD) 0.0003 52923.6920 59608 -0.0507 52 G. Samolyk (CCD) 0.0003 53097.7639 60025 -0.0543 45 G. Samolyk (CCD) 0.0003 ------------------------------------------ EG CEP JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 52312.616 17844 0.002 17 G. Samolyk 52398.663 18002 -0.002 14 D. Weier 52398.667 18002 0.002 14 B. Manske 52435.709 18070 0.010 20 C. Stephan 52495.6196 18180 0.0122 52 S. Dvorak (CCD) 0.0001 52496.714 18182 0.017 26 C. Stephan 52545.723 18272 0.010 15 G. Sarty 52549.539 : 18279 0.014 12 G. Chaple 52581.669 18338 0.011 20 C. Stephan 52586.571 18347 0.012 21 C. Stephan 52587.658 18349 0.010 19 C. Stephan 52696.583 18549 0.010 22 G. Chaple 52875.759 18878 0.006 11 D. Williams 52966.704 19045 -0.001 22 C. Stephan 53168.781 19416 0.021 7 C. Stephan 53179.6651 19436 0.0127 44 G. Samolyk (CCD) 0.0001 ------------------------------------------ ZZ CYG JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 51734.694 10713 -0.031 9 D. Williams 51746.635 10732 -0.034 8 M. Baldwin 52086.717 11273 -0.033 10 M. Baldwin 52115.636 11319 -0.030 12 C. Stephan 52210.555 11470 -0.033 12 G. Samolyk 52466.3964 11877 -0.0381 23 Bal-Mai (CCD) 0.0005 52505.3692 11939 -0.0395 22 Bal-Mai (CCD) 0.0005 52511.655 11949 -0.040 11 M. Simonsen 52562.5720 12030 -0.0408 44 G. Samolyk (CCD) 0.0001 52812.7592 12428 -0.0429 42 N. Simmons (CCD) 0.0002 52861.7905 12506 -0.0437 38 S. Diesso (CCD) 0.0002 52875.624 12528 -0.040 10 D. Williams 52897.620 12563 -0.045 15 C. Stephan 52914.5949 12590 -0.0431 65 J. Bialozynski (CCD) 0.0001 ------------------------------------------ V401 CYG JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 43219.900 -1056 -0.005 13 G. Samolyk 43380.705 -780 -0.031 15 G. Samolyk 43690.730 -248 -0.014 20 A. MacRobert 43820.663 -25 -0.028 16 G. Samolyk 44046.768 363 -0.019 16 G. Samolyk 44817.713 1686 -0.015 12 G. Samolyk 44915.611 1854 -0.015 14 G. Samolyk 45131.792 2225 -0.023 16 G. Samolyk 45553.700 2949 -0.006 17 G. Samolyk 45923.708 3584 -0.027 15 G. Samolyk 46387.546 4380 -0.035 11 G. Samolyk 49858.849 : 10337 -0.007 20 G. Samolyk 50284.8495 11068 0.0234 36 G. Lubcke (CCD) 0.0010 52146.6667 14263 0.0438 133 S. Dvorak (CCD) 0.0002 52500.3729 14870 0.0378 30 Bal-Mai (CCD) 0.0004 52533.5878 14927 0.0375 41 G. Samolyk (CCD) 0.0005 52886.7214 15533 0.0416 30 G. Samolyk (CCD) 0.0007 52889.6376 15538 0.0442 60 C. Hesseltine (CCD)0.0003 53189.7493 16053 0.0540 57 G. Samolyk (CCD) 0.0004 ------------------------------------------ YY DEL JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 51813.588 11164 -0.005 16 C. Stephan 51836.593 11193 0.000 15 M. Baldwin 51836.5978 11193 0.0048 64 G. Samolyk (CCD) 0.0001 51863.5642 11227 0.0061 36 S. Dvorak (CCD) 0.0005 51871.4961 11237 0.0070 J. A. Howell (CCD) 0.0010 52073.7326 11492 0.0050 60 S. Dvorak (CCD) 0.0001 52169.6983 11613 0.0066 31 S. Dvorak (CCD) 0.0003 52506.758 12038 0.002 29 M. Simonsen 52518.6584 12053 0.0061 53 G. Samolyk (CCD) 0.0007 52553.556 12097 0.008 19 G. Chaple 52603.523 12160 0.010 19 G. Chaple 52913.6202 12551 0.0080 49 G. Samolyk (CCD) 0.0003 ------------------------------------------ YY ERI JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 52586.778 34231 0.088 17 C. Stephan 52609.614 34302 0.098 16 C. Stephan 52631.6400 34370.5 0.1013 20 S. Dvorak (CCD) 0.0001 52636.622 34386 0.100 15 G. Samolyk 52639.679 34395.5 0.103 23 G. Samolyk 52643.675 34408 0.080 23 C. Stephan 52644.648 34411 0.089 17 C. Stephan 52951.6910 35366 0.1049 46 G. Samolyk (CCD) 0.0001 52999.602 35515 0.113 17 G. Samolyk 53010.5251 35549 0.1056 54 S. Dvorak (CCD) 0.0001 53038.659 35636.5 0.109 15 C. Stephan 53057.6251 35695.5 0.1067 28 G. Samolyk (CCD) 0.0001 ------------------------------------------ RW GEM JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 50109.685 11100 0.011 14 C. Stephan 50129.727 : 11107 -0.005 17 R. Hill 50513.704 11241 -0.005 16 R. Hill 51536.6918 11598 0.0003 J. A. Howell (CCD) 0.0027 51579.672 11613 -0.002 23 G. Samolyk 51602.602 11621 0.004 22 G. Samolyk 51874.816 11716 -0.004 17 R. Hill 51940.727 11739 0.000 23 R. Hill 51983.707 11754 -0.002 16 R. Hill 52235.8738 11842 0.0010 69 S. Dvorak (CCD) 0.0001 52731.6050 12015 0.0011 37 G. Samolyk (CCD) 0.0015 ------------------------------------------ SZ HER JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 52455.3817 12946 -0.0238 20 Bal-Mai (CCD) 0.0003 52464.3807 12957 -0.0239 21 Bal-Mai (CCD) 0.0002 52485.648 12983 -0.027 14 R. Hays 52521.647 13027 -0.024 14 R. Hays 52553.554 13066 -0.023 11 R. Hays 52553.557 13066 -0.020 14 D. Williams 52731.897 13284 -0.026 13 R. Hays 52763.808 13323 -0.021 14 D. Williams 52786.713 13351 -0.022 16 R. Hays 52786.719 13351 -0.016 15 R. Hill 52822.706 13395 -0.026 14 R. Hays 52885.707 13472 -0.018 13 R. Hays 52908.610 13500 -0.022 11 M. Baldwin 53164.6749 13813 -0.0218 66 J. Bialozynski (CCD) 0.0001 53168.769 13818 -0.018 12 C. Stephan ------------------------------------------ TT HER JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 43275.736 3596 0.005 16 G. Samolyk 43701.674 4063 0.003 11 G. Samolyk 43980.774 4369 0.008 15 G. Samolyk 46210.802 6814 0.012 15 P. Atwood 46263.705 6872 0.014 11 D. Williams 46273.757 6883 0.034 14 D. Williams 46274.647 6884 0.012 11 D. Williams 48835.754 9692 0.011 18 G. Samolyk 49199.689 10091 0.028 18 D. Williams 50600.641 11627 0.032 12 S. Cook (CCD) 52083.6764 13253 0.0323 67 C. Hesseltine (CCD)0.0007 52735.8036 13968 0.0256 65 G. Samolyk (CCD) 0.0004 52830.675 14072 0.041 26 C. Stephan 53077.8328 14343 0.0265 51 G. Samolyk (CCD) 0.0003 ------------------------------------------ AV HYA JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 48654.852 17532 -0.001 11 G. Samolyk 49095.627 18177 -0.023 6 M. Baldwin 49423.659 18657 -0.026 10 M. Baldwin 49788.590 19191 -0.034 13 M. Baldwin 50131.654 19693 -0.040 7 S. Cook (CCD) 50511.610 20249 -0.058 10 S. Cook (CCD) 51586.612 21822 -0.054 22 C. Stephan 51629.6647 21885 -0.0560 50 G. Lubcke (CCD) 0.0001 51996.6492 22422 -0.0606 J. A. Howell (CCD) 0.0002 52265.9077 22816 -0.0642 68 S. Dvorak (CCD) 0.0002 52350.6489 22940 -0.0653 122 G. Lubcke (CCD) 0.0001 52660.9115 23394 -0.0691 31 S. Dvorak (CCD) 0.0003 53097.6031 24033 -0.0741 46 G. Samolyk (CCD) 0.0003 ------------------------------------------ DI HYA JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 43538.790 20082 -0.011 10 G. Samolyk 44307.801 21333 -0.007 10 G. Samolyk 44320.707 21354 -0.010 15 P. Goodwin 44660.637 21907 -0.016 15 G. Samolyk 44679.697 21938 -0.012 18 P. Goodwin 45352.813 23033 -0.007 9 G. Samolyk 46908.653 25564 -0.006 7 R. Hill 50520.690 31440 -0.024 13 R. Hill 51996.6190 33841 -0.0214 44 G. Samolyk (CCD) 0.0002 52616.8590 34850 -0.0270 36 G. Samolyk (CCD) 0.0002 52648.8249 34902 -0.0262 39 S. Dvorak (CCD) 0.0003 52741.6487 35053 -0.0241 104 C. Hesseltine (CCD)0.0002 52741.6489 35053 -0.0239 67 G. Samolyk (CCD) 0.0004 53057.6109 35567 -0.0245 36 G. Samolyk (CCD) 0.0004 ------------------------------------------ DG LAC JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 43050.878 -661 0.010 25 G. Samolyk 43860.615 -294 -0.051 16 G. Samolyk 44138.667 -168 -0.022 19 G. Samolyk 44544.677 16 -0.015 26 G. Hanson 45945.767 651 -0.074 13 D. Williams 45976.645 665 -0.087 10 D. Williams 47730.848 5) 1460 -0.079 36 G. Samolyk 47794.803 1489 -0.113 16 G. Samolyk 48893.680 1987 -0.090 21 G. Samolyk 50367.539 : 2655 -0.196 11 G. Samolyk 50614.709 2767 -0.158 17 G. Samolyk 52975.6568 3837 -0.2012 95 C. Hesseltine (CCD)0.0001 53189.6889 3934 -0.2029 87 G. Samolyk (CCD) 0.0004 5) Observations combined from 47688 to 47772 ------------------------------------------ T LMI JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 50153.653 1575 -0.034 12 M. Baldwin 50165.716 1579 -0.050 13 M. Baldwin 50174.793 6) 1582 -0.033 22 R. Hill 50923.698 1830 -0.060 20 M. Baldwin 51231.726 1932 -0.060 15 M. Baldwin 51678.670 2080 -0.059 13 M. Baldwin 51681.688 2081 -0.061 19 R. Hill 51986.691 2182 -0.066 22 R. Hill 51986.705 2182 -0.052 23 G. Samolyk 51989.711 7) 2183 -0.066 31 R. Hill 52300.760 2286 -0.065 16 M. Simonsen 52741.6621 2432 -0.0662 71 G. Samolyk (CCD) 0.0002 53049.6861 2534 -0.0705 90 G. Samolyk (CCD) 0.0003 6) Observations combined from 50159 to 50189 7) Observations combined from 51983 to 51995 ------------------------------------------ BB MON JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 46104.686 26509 0.011 9 S. Cook 48300.573 29506 -0.001 12 M. Baldwin 48308.624 29517 -0.009 15 M. Baldwin 48690.368 8) 30038 -0.001 15 S. Cook 49018.631 30486 0.013 14 M. Baldwin 49021.544 30490 -0.005 10 M. Baldwin 49780.625 31526 0.000 17 M. Baldwin 49791.627 31541 0.011 14 M. Baldwin 49802.618 31556 0.012 11 M. Baldwin 50095.679 31956 -0.007 11 S. Cook (CCD) 50534.567 32555 -0.005 10 M. Baldwin 51611.638 34025 -0.001 22 M. Baldwin 53050.6549 35989 -0.0050 73 G. Samolyk (CCD) 0.0001 53053.5858 35993 -0.0049 76 J. Bialozynski (CCD) 0.0003 8) Observations compined from 48689 to 48692 ------------------------------------------ ER ORI JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 52311.5463 25236.5 0.0300 35 G. Lubcke (CCD) 0.0003 52559.8713 25823 0.0317 44 G. Samolyk (CCD) 0.0003 52581.8875 25875 0.0311 20 S. Dvorak (CCD) 0.0003 52609.830 25941 0.029 18 G. Sarty 52643.698 26021 0.025 18 C. Stephan 52644.554 26023 0.035 17 C. Stephan 52662.5464 26065.5 0.0326 38 G. Samolyk (CCD) 0.0001 52671.639 26087 0.022 18 C. Stephan 53003.5965 26871 0.0350 46 G. Samolyk (CCD) 0.0003 53010.5824 26887.5 0.0349 20 S. Dvorak (CCD) 0.0004 53038.732 26954 0.028 17 C. Stephan 53039.5858 26956 0.0354 55 J. Bialozynski (CCD) 0.0003 ------------------------------------------ TY PEG JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 50006.613 3090 -0.131 16 G. Samolyk 50006.616 3090 -0.128 10 M. Baldwin 50742.533 : 3328 -0.159 5 M. Baldwin 50779.637 3340 -0.162 10 M. Baldwin 51085.751 : 3439 -0.178 14 R. Hill 51453.713 3558 -0.190 16 R. Hill 51549.582 3589 -0.180 15 M. Baldwin 51818.591 3676 -0.194 12 D. Williams 52189.648 3796 -0.203 17 G. Samolyk 52223.665 3807 -0.201 15 G. Samolyk 52254.578 3817 -0.210 16 G. Samolyk 52554.509 : 3914 -0.224 22 G. Chaple 52993.595 4056 -0.233 15 G. Samolyk ------------------------------------------ UX PEG JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 42981.819 1655 -0.001 10 G. Samolyk 43741.783 2147 0.011 15 G. Samolyk 43741.784 2147 0.012 11 C. Hesseltine 45193.727 3087 0.015 13 G. Samolyk 46713.631 4071 0.016 12 G. Samolyk 47062.705 4297 0.007 17 G. Samolyk 47524.549 4596 0.010 10 G. Samolyk 48219.614 5046 -0.002 16 G. Samolyk 52133.6706 7580 -0.0053 120 C. Hesseltine (CCD)0.0003 52252.6074 7657 -0.0040 69 G. Samolyk (CCD) 0.0002 52547.6294 7848 -0.0038 54 S. Dvorak (CCD) 0.0002 ------------------------------------------ BX PEG JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 50376.671 22043 -0.022 10 G. Samolyk 50726.648 23291 -0.010 13 G. Samolyk 51084.588 24568 -0.027 13 G. Samolyk 51156.505 24824 -0.038 8 G. Samolyk 51837.636 27253 -0.049 21 G. Samolyk 52133.766 28309 -0.044 23 G. Samolyk 52201.6134 28551 -0.0580 51 S. Dvorak (CCD) 0.0001 52219.558 28615 -0.060 15 G. Samolyk 52240.5917 28690 -0.0582 65 S. Dvorak (CCD) 0.0002 52478.3855 29538 -0.0612 24 Bal-Mai (CCD) 0.0004 52496.6128 29603 -0.0612 30 G. Samolyk (CCD) 0.0003 52501.3783 29620 -0.0629 18 Bal-Mai (CCD) 0.0005 52565.5965 29849 -0.0611 44 S. Dvorak (CCD) 0.0001 52602.6112 29981 -0.0619 45 G. Samolyk (CCD) 0.0002 52806.7546 30709 -0.0648 58 C. Limbach (CCD) 0.0001 52870.6902 30937 -0.0652 46 R. Poklar (CCD) 0.0001 52920.6030 31115 -0.0673 52 R. Poklar (CCD) 0.0001 52986.5020 31350 -0.0672 31 G. Samolyk (CCD) 0.0003 ------------------------------------------ AE PHE JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 49660.587 9) 16358 -0.058 22 G. Samolyk 49660.770 9) 16358.5 -0.056 21 G. Samolyk 49663.110 10) 16365 -0.072 16 C. Hesseltine 50808.602 19526 -0.053 12 G. Samolyk 50812.592 19537 -0.049 12 G. Samolyk 50814.588 19542.5 -0.046 14 G. Samolyk 51172.613 20530.5 -0.050 9 G. Samolyk 51174.596 20536 -0.060 19 G. Samolyk 51176.589 20541.5 -0.060 16 G. Samolyk 51496.739 21425 -0.070 16 G. Samolyk 51896.423 11) 22528 -0.088 36 G. Samolyk 51896.606 11) 22528.5 -0.086 35 G. Samolyk 52080.511 12) 23036 -0.087 55 G. Samolyk 52080.701 12) 23036.5 -0.079 55 G. Samolyk 52268.595 13) 23555 -0.077 16 G. Samolyk 52268.773 13) 23555.5 -0.080 32 G. Samolyk 52636.5789 24570.5 -0.0871 31 G. Samolyk (CCD) 0.0002 52994.6051 25558.5 -0.0894 48 G. Samolyk (CCD) 0.0003 53000.5842 25575 -0.0895 50 G. Samolyk (CCD) 0.0002 9) Observations combined from 49660 to 49661 10) Observations combined from 49660 to 49666 11) Observations combined from 51895 to 51898 12) Observations combined from 52079 to 52082 13) Observations combined from 52267 to 52270 ------------------------------------------ U SGE JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 49249.659 9501 -0.017 17 M. Nall 49942.697 9706 -0.006 19 D. Williams 49986.645 9719 -0.006 31 R. Hays 50030.579 9732 -0.020 10 R. Schmude 50341.600 9824 -0.016 15 R. Schmude 50635.721 9911 -0.009 24 R. Hays 50939.976 10001 -0.009 18 D. Matsnev 50973.780 10011 -0.012 29 A. Filho 51061.678 10037 -0.010 22 D. Williams 51105.627 10050 -0.009 16 D. Williams 51372.696 10129 -0.009 16 D. Williams 51798.6524 10255 -0.0102 J. A. Howell (CCD) 0.0002 52934.5358 10591 -0.0149 47 S. Dvorak (CCD) 0.0007 ------------------------------------------ RS SER JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 49901.745 25044 0.080 14 M. Baldwin 49924.770 25082.5 0.076 14 M. Baldwin 49925.673 25084 0.082 10 M. Baldwin 49927.752 25087.5 0.067 12 M. Baldwin 49928.665 25089 0.083 14 M. Baldwin 49978.603 25172.5 0.077 10 M. Baldwin 50280.669 25677.5 0.082 14 M. Baldwin 50283.347 14) 25682 0.068 14 S. Cook (CCD) 51371.671 27501.5 0.076 8 M. Baldwin 51427.610 27595 0.089 10 M. Baldwin 51431.175 15) 27601 0.065 52 M. Baldwin 14) Observations combined from 50282 to 50284 15) Observations combined from 51424 to 51438 ------------------------------------------ CC SER JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 43275.799 11228.5 0.253 15 G. Samolyk 43337.725 11348.5 0.259 11 G. Samolyk 43337.746 11348.5 0.280 10 G. Wedemayer 43693.772 12038.5 0.261 15 G. Samolyk 44046.707 12722.5 0.248 12 G. Samolyk 44307.825 13228.5 0.267 12 G. Samolyk 47706.744 19815 0.511 13 G. Samolyk 48831.686 21995 0.560 14 G. Samolyk 49480.813 23253 0.551 19 G. Samolyk 50284.650 24810.5 0.708 12 G. Samolyk 52028.7929 28190.5 0.7501 41 G. Samolyk (CCD) 0.0008 52397.7575 28905.5 0.7703 32 S. Dvorak (CCD) 0.0004 52521.6084 29145.5 0.7797 61 G. Samolyk (CCD) 0.0003 52728.7962 29547 0.7910 43 G. Samolyk (CCD) 0.0004 52763.6294 29614.5 0.7938 35 C. Hesseltine (CCD)0.0002 52796.6536 29678.5 0.7936 31 G. Samolyk (CCD) 0.0007 52860.6446 29802.5 0.7998 42 G. Samolyk (CCD) 0.0003 53097.7621 30262 0.8125 47 G. Samolyk (CCD) 0.0005 53141.6269 30347 0.8167 41 G. Samolyk (CCD) 0.0005 ------------------------------------------ TY TAU JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 51595.5953 28220 0.2281 87 C. Hesseltine (CCD)0.0001 51957.5866 28556 0.2279 33 S. Dvorak (CCD) 0.0007 51958.6659 28557 0.2299 26 G. Lubcke (CCD) 0.0003 51971.5975 28569 0.2332 39 S. Dvorak (CCD) 0.0006 52238.7815 28817 0.2331 27 S. Dvorak (CCD) 0.0006 52252.7867 28830 0.2326 73 G. Samolyk (CCD) 0.0001 52264.6372 28841 0.2322 31 S. Dvorak (CCD) 0.0003 52279.7205 28855 0.2325 27 S. Dvorak (CCD) 0.0003 52291.5714 28866 0.2325 23 S. Dvorak (CCD) 0.0002 52319.5831 28892 0.2330 53 G. Lubcke (CCD) 0.0001 52640.6372 29190 0.2352 61 C. Hesseltine (CCD)0.0002 53003.7088 29527 0.2380 46 G. Samolyk (CCD) 0.0001 53029.5645 29551 0.2371 50 G. Samolyk (CCD) 0.0002 ------------------------------------------ X TRI JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 52497.824 10288 -0.051 12 D. Williams 52575.548 10368 -0.050 12 C. Stephan 52605.666 10399 -0.050 15 R. Hays 52609.550 10403 -0.052 17 C. Stephan 52610.523 10404 -0.050 11 C. Stephan 52643.556 10438 -0.049 10 C. Stephan 52644.528 10439 -0.049 12 C. Stephan 52676.5842 10472 -0.0534 100 S. Dvorak (CCD) 0.0001 52871.861 10673 -0.055 12 R. Hays 52875.747 10677 -0.055 11 D. Williams 52907.810 10710 -0.053 15 R. Hays 52909.754 10712 -0.052 16 R. Hill 52915.580 10718 -0.055 7 M. Baldwin 52950.562 10754 -0.049 14 R. Hays 53017.592 10823 -0.054 17 R. Hays 53018.5613 10824 -0.0567 51 G. Samolyk (CCD) 0.0001 53051.593 10858 -0.057 16 R. Hays ------------------------------------------ RV TRI JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 51554.657 7326 -0.012 10 M. Baldwin 51582.540 7363 -0.014 8 M. Baldwin 51814.665 7671 -0.019 9 R. Berg 51888.5257 7769 -0.0172 36 S. Dvorak (CCD) 0.0002 51897.581 7781 -0.006 15 C. Stephan 52246.5141 8244 -0.0204 18 J. Blackwell (CCD) 52261.600 8264 -0.008 22 C. Stephan 52264.611 : 8268 -0.011 7 M. Simonsen 52270.6322 8276 -0.0196 76 J. A. Howell (CCD) 0.0001 52564.561 8666 -0.021 15 C. Stephan 52585.6641 8694 -0.0203 39 S. Dvorak (CCD) 0.0001 52637.662 8763 -0.025 15 C. Stephan ------------------------------------------ W UMA JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 52404.434 19898 -0.023 8 S. Kracenicki 52652.310 20641 -0.040 11 S. Foglia 52664.310 20677 -0.051 9 S. Foglia 52695.350 20770 -0.039 13 S. Foglia 52723.709 20855 -0.039 16 C. Stephan 52727.705 20867 -0.047 18 C. Stephan 52734.713 20888 -0.045 18 C. Stephan 52753.400 20944 -0.042 14 J. Virtanen 52755.408 20950 -0.036 11 J. Virtanen 52988.279 21648 -0.044 6 S. Foglia 52996.798 21673.5 -0.033 12 G. Samolyk 53038.667 21799 -0.035 14 C. Stephan 53044.328 21816 -0.046 9 S. Foglia 53092.710 21961 -0.041 14 S. Cook 53168.771 22189 -0.050 7 C. Stephan ------------------------------------------ TX UMA JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 50104.674 1667 0.108 9 R. Schmude 50110.808 1669 0.116 16 R. Hays 50150.635 1682 0.121 13 S. Cook (CCD) 50159.799 : 1685 0.095 13 R. Hill 50202.712 : 1699 0.123 6 R. Hill 51262.625 2045 0.155 12 R. Berg 51262.631 2045 0.161 12 D. Williams 51265.692 2046 0.159 11 D. Williams 51587.334 2151 0.161 20 S. Foglia 51602.657 2156 0.168 17 G. Samolyk 51608.770 2158 0.154 14 D. Williams 51657.783 2174 0.156 14 D. Williams 52426.670 2425 0.170 20 G. Samolyk 52763.628 2535 0.172 15 D. Williams 52812.6386 2551 0.1705 34 G. Samolyk (CCD) 0.0007 53057.7000 2631 0.1728 68 G. Samolyk (CCD) 0.0002 ------------------------------------------ AK VIR JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 43262.724 575 -0.003 17 G. Samolyk 44766.665 1835 0.004 10 G. Samolyk 45463.710 2419 -0.012 14 G. Samolyk 45876.704 2765 -0.003 12 G. Samolyk 46924.670 3643 -0.016 11 G. Samolyk 50580.640 6706 -0.037 13 S. Cook (CCD) 52405.6341 8235 -0.0543 35 S. Dvorak (CCD) 0.0001 52763.710 8535 -0.058 10 D. Williams 52769.6807 8540 -0.0551 100 C. Hesseltine (CCD)0.0004 52781.6170 8550 -0.0548 28 G. Samolyk (CCD) 0.0004 52812.6502 8576 -0.0551 50 C. Hesseltine (CCD)0.0001 53176.7008 8881 -0.0519 44 G. Samolyk (CCD) 0.0003 ------------------------------------------ AW VIR JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 43612.682 -3983 0.007 14 G. Samolyk 44271.828 -2121 0.011 18 G. Hanson 45442.842 1187 0.003 15 G. Samolyk 50567.659 15664 0.006 9 S. Cook (CCD) 52038.7004 19819.5 0.0128 49 G. Samolyk (CCD) 0.0002 52323.8451 20625 0.0130 35 S. Dvorak (CCD) 0.0001 52387.5642 20805 0.0127 26 S. Dvorak (CCD) 0.0002 52616.9548 21453 0.0132 34 G. Samolyk (CCD) 0.0004 52739.7928 21800 0.0143 48 G. Samolyk (CCD) 0.0002 52750.7658 21831 0.0134 34 S. Dvorak (CCD) 0.0003 52783.6868 21924 0.0127 86 C. Hesseltine (CCD)0.0002 52811.6532 22003 0.0133 32 R. Poklar (CCD) 0.0002 53050.7796 22678.5 0.0148 49 G. Samolyk (CCD) 0.0003 53119.6324 22873 0.0152 49 G. Samolyk (CCD) 0.0002 53154.6783 22972 0.0154 31 G. Samolyk (CCD) 0.0003 ------------------------------------------ BO VUL JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 51367.649 7903 0.015 15 J. McKenna 51435.754 7938 0.015 9 M. Baldwin 51437.699 7939 0.014 15 M. Baldwin 51439.646 7940 0.015 10 M. Baldwin 51439.646 7940 0.015 16 D. Williams 51476.6134 7959 0.0110 33 G. Samolyk (CCD) 0.0002 51727.631 8088 0.012 13 J. McKenna 51836.5941 8144 0.0060 27 G. Samolyk (CCD) 0.0001 51838.540 8145 0.006 10 M. Baldwin 52085.661 8272 0.002 17 M. Baldwin 52196.566 8329 -0.008 14 J. McKenna 52198.521 8330 0.001 14 W. Anthony 52513.743 8492 -0.008 14 R. Hill 52517.638 8494 -0.004 12 M. Baldwin 52875.675 8678 -0.007 8 D. Williams 52951.5633 8717 -0.0078 52 G. Samolyk (CCD) 0.0001 ------------------------------------------ END OF OBSERVED TIMES OF MINIMA NUMBER 9 ------------------------------------------