PAGE i OBSERVED MINIMA TIMINGS OF ECLIPSING BINARIES NUMBER 8 Prepared by: Marvin E. Baldwin Chairman, AAVSO Eclipsing Binary Committee Gerard Samolyk AAVSO Eclipsing Binary Committee August 2003 ------------------------------------------------------------------------ PAGE ii Funds for publication were provided by The Harold S. Martin Fund. ISBN 1-878174-67-3 COPYRIGHT 2003 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 800 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 7. 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. In most cases, 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. For the following stars the light elements from the sources indicated are used: CW Cas JAAVSO (Samolyk 1992) Z Dra SAC 68 (Kurpinska-Winiarksa M., et al.1997) DF Hya JAAVSO (Samolyk 1992) DK Hya JAAVSO (Samolyk 1990) GU Ori JAAVSO (Samolyk 1985) 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 in /pub/monographs). 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, 26, 3,153. 2 Ashbrook, J. 1964, Sky & Telescope, 27,1, 58. 3 Ashbrook, J. 1964, Sky & Telescope, 27, 5, 317. 4 Ashbrook, J. 1965, Sky & Telescope, 29, 4, 254. 5 Robinson, L. J. 1965, Inf. Bull. Var. Stars, No. 111. 6 Robinson, L. J. 1965, Inf. Bull. Var. Stars, No. 114. 7 Robinson, L. J. 1965, Inf. Bull. Var. Stars, No. 119. 8 Robinson, L. J. 1966, Inf. Bull. Var. Stars, No. 129. 9 Robinson, L. J. 1966, Inf. Bull. Var. Stars, No. 154. 10 Robinson, L. J. 1967, Inf. Bull. Var. Stars, No. 180. 11 Robinson, L. J. 1967, Inf. Bull. Var. Stars, No. 221. 12 Robinson, L. J., and Ashbrook, J. 1968, Inf. Bull. Var. Stars, No. 247. 13 Baldwin, M. E. 1973, Inf. Bull. Var. Stars, No. 795. 14 Baldwin, M. E. 1974, J. Amer. Assoc. Var. Star Obs., 3, 60. 15 Baldwin, M. E. 1975, J. Amer. Assoc. Var. Star Obs., 4, 86. 16 Baldwin, M. E. 1976, J. Amer. Assoc. Var. Star Obs., 5, 29. 17 Baldwin, M. E. 1976, J. Amer. Assoc. Var. Star Obs., 5, 84. 18 Baldwin, M. E. 1977, J. Amer. Assoc. Var. Star Obs., 6, 24. 19 Baldwin, M. E. 1978, J. Amer. Assoc. Var. Star Obs., 7, 28. 20 Samolyk, G. 1985, J. Amer. Assoc. Var. Star Obs., 14, 12. 21 Samolyk, G. 1990, J. Amer. Assoc. Var. Star Obs., 19, 5. 22 Samolyk, G. 1992, J. Amer. Assoc. Var. Star Obs., 21, 34. 23 Samolyk, G. 1992, J. Amer. Assoc. Var. Star Obs., 21, 111. 24 Baldwin, M. E., and Samolyk, G. 1993, Observed Minima Timings of Eclipsing Binaries No. 1, AAVSO, Cambridge, MA. 25 Baldwin, M. E., and Samolyk, G. 1995, Observed Minima Timings of Eclipsing Binaries No. 2, AAVSO, Cambridge, MA. 26 Baldwin, M. E., and Samolyk, G. 1996, Observed Minima Timings of Eclipsing Binaries No. 3, AAVSO, Cambridge, MA. 27 Baldwin, M. E., and Samolyk, G. 1997, Observed Minima Timings of Eclipsing Binaries No. 4, AAVSO, Cambridge, MA. 28 Baldwin, M. E., and Samolyk, G. 1999, Observed Minima Timings of Eclipsing Binaries No. 5, AAVSO, Cambridge, MA. 29 Baldwin, M. E., and Samolyk, G. 2000, Observed Minima Timings of Eclipsing Binaries No. 6, AAVSO, Cambridge, MA. 30 Baldwin, M. E., and Samolyk, G. 2002, Observed Minima Timings of Eclipsing Binaries No. 7, AAVSO, Cambridge, MA. 31 Kholopov, P. N., et al. 1985, General Catalogue of Variable Stars, Fourth Edition, Moscow. 32 Kwee K. K., and Van Worden, H. 1957, Bull. Astron. Inst. Netherlands, 12, 327. 33 Kurpinska-Winiarksa M., et al.1997, SAC68 (Rocznik Astron. Obserwat. Krakowskiego (Suppl. Ann. Cracoviense No. 68) ------------------------------------------------------------------------ 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 30 UU AND X WZ AND X X X X X X X X AB AND X X X X X X X X X X X X X X X KO AQL X V346 AQL X X X X X X X X X X X X X X X RX ARI X AP AUR HP AUR TU BOO X TY BOO X X TZ BOO X R CMA X X X X X X X X X X X X SX CMA XZ CMI X 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 AB CAS X X X X X X X X X X X X X X X CW CAS X X XX CEP X X X X X X X X X X X DL CEP BR CYG X X X X X CG CYG X X DK CYG X KR CYG X X FZ DEL X X X X X X X X X Z DRA X X X X X X X X X X X X X X X RZ DRA X X X TU HER X X X DF HYA X DK HYA X SW LAC X X X X X X X X X X X X X X X X X X CM LAC X X X X X X X X CO LAC VZ LEO Z LEP X FL LYR X X X X X X X X X X X X U OPH X X X X X X X X X X V1010 OPH X GU ORI X X BB PEG X X DI PEG X GP PEG X Y PSC X X X X X X UZ PUP X AV PUP X V TRI X X X X W UMA X X X X X X X X X X X XZ UMA X X X X X X X X W UMI X X X RU UMI X X X X AZ VIR 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) UU AND 1976 1994 2002 41650.340 1.486296 WZ AND 1966 1999 2003 40872.290 0.6956576 AB AND 1966 2001 2002 36109.57928 0.33189215 KO AQL 1965 1976 2002 41887.4724 2.864055 V346 AQL 1965 2000 2003 41918.384 1.106363 RX Ari 1973 1976 2003 38398.5697 1.029626 AP AUR 1976 1976 2003 42443.609 0.5693125 HP AUR 1976 1976 2003 42756.3475 1.4228132 TU BOO 1976 1997 2003 33066.404 0.3242868 TY BOO 1977 1999 2003 34480.425 0.3171477 TZ BOO 1977 2000 2003 39632.8418 0.297162 R CMA 1963 2000 2003 44289.361 1.1359405 SX CMA 1977 1977 2003 28095.400 1.62425838 XZ CMI 1976 1995 2003 42444.4017 0.5788095 RZ CAS 1961 2002 2003 43200.3063 1.195247 AB CAS 1965 2000 2002 42714.4627 1.3668738 CW CAS 1977 1999 2003 41632.185 0.3188641 XX CEP 1964 1994 2002 44839.8022 2.3373266 DL CEP 1976 1976 2002 33946.608 1.630481 BR CYG 1968 1999 2001 41539.4654 1.33256415 CG CYG 1976 1999 2003 39425.1221 0.63114100 DK CYG 1976 1995 2002 37999.5838 0.47069055 KR CYG 1987 1999 2002 29106.413 0.8451517 FZ DEL 1968 2000 2002 31324.329 0.7832126 Z DRA 1965 2000 2002 49844.401 1.3574357 RZ DRA 1975 1999 2003 44177.5555 0.5508738 TU HER 1971 1995 2003 44061.462 2.2670005 DF HYA 1976 1993 2003 42787.777 0.33060521 DK HYA 1976 1991 2003 42843.718 0.5219207 SW LAC 1965 2001 2002 45275.3477 0.3207209 CM LAC 1966 2000 2002 27026.316 1.6046916 CO LAC 1976 1976 2003 27534.0728 1.5422075 VZ LEO 1980 1980 2003 31164.316 1.089906 Z LEP 1977 1993 2003 27424.311 0.993715 FL LYR 1963 1995 2002 38221.55250 2.1781544 U OPH 1956 1995 2000 44416.3864 1.67734617 V1010 OPH 1987 2000 2002 38937.7690 0.66142613 GU ORI 1976 1999 2003 43069.903 0.470681 BB PEG 1977 1999 2002 43764.3334 0.3615021 DI PEG 1976 1995 2001 45196.488 0.7118168 GP PEG 1987 1994 2000 41238.328 0.9756179 Y PSC 1969 1996 2002 45635.241 3.765767 UZ PUP 1976 1997 2003 44613.69829 0.79485120 AV PUP 1976 1996 2001 31178.131 0.5563389 V TRI 1975 2000 2002 24474.305 0.5852057 W UMA 1966 1999 2003 45765.7385 0.33363749 XZ UMA 1967 2001 2003 46168.426 1.22232 W UMI 1957 1996 2002 33682.323 1.7011576 RU UMI 1972 2001 2002 41596.3365 0.52492618 AZ VIR 1975 2000 2003 43976.540 0.34966511 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 P. Atwood 1 P. Kuebler (CCD) 1 1) Bal-Mai (CCD) 6 R. Lee 1 M. Baldwin 73 G. Lubcke (CCD) 18 R. Berg 5 B. Manske 14 J. Blackwell (CCD) 1 D. Matsnev 2 G. Chaple 3 J. McKenna 3 L. Cook (CCD) 1 M. Nicholas (CCD) 6 S. Cook (CCD) 14 D. Ruokonen 4 M. Csukas 1 G. Samolyk 211 S. Dvorak (CCD) 105 G. Samolyk (CCD) 106 2) FBAC GRB team (CCD) 1 G. Sarty 5 S. Foglia 16 R. Schmude 6 E. Halbach 2 N. Simmons 2 G. Hanson 4 N. Simmons (CCD) 1 R. Hays 31 M. Simonsen 9 C. Hesseltine 2 C. Stephan 60 C. Hesseltine (CCD) 11 G. Stecher (CCD) 2 R. Hill 16 J. Virtanen 1 J. A. Howell 1 G. Wedemayer 3 J. A. Howell (CCD) 12 D. Weier 3 S. Jamieson (CCD) 3 D. Williams 33 38 Observers Total 800 1) CCD observations by the team of L. Baldinelli and A. Maitan 2) Team members Len Casady, Alex Cruz, Joe Dellinger, Bill Dillon, and Terry Hiserodt This table lists the observers and the number of minima contributed by each. CCD stands for Charge-Coupled Device. ------------------------------------------------------------------------ UU AND JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 49570.817 5329 0.006 16 M. Baldwin 50337.755 5845 0.015 18 M. Baldwin 50340.732 5847 0.019 17 M. Baldwin 50719.737 6102 0.019 15 M. Baldwin 51165.635 6402 0.028 15 M. Baldwin 51428.704 6579 0.023 16 M. Baldwin 51431.677 6581 0.023 19 M. Baldwin 51486.669 6618 0.022 17 M. Baldwin 51492.607 6622 0.015 17 R. Hill 51492.615 6622 0.023 25 M. Baldwin 51544.638 6657 0.026 14 M. Baldwin 52311.5709 7173 0.0297 53 G. Samolyk (CCD) 0.0002 52507.768 7305 0.036 20 M. Simonsen 52568.7049 7346 0.0344 279 L. Cook (CCD) 0.0001 ------------------------------------------ WZ AND JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 51431.685 15179 0.008 15 M. Baldwin 51431.690 15179 0.013 14 R. Berg 51438.656 15189 0.023 19 M. Baldwin 51493.612 15268 0.022 16 M. Baldwin 51836.564 15761 0.014 14 M. Baldwin 51849.786 15780 0.019 17 R. Hill 51868.573 15807 0.023 16 C. Stephan 51872.743 15813 0.019 16 R. Hill 51909.6143 15866 0.0208 53 S. Dvorak (CCD) 0.0003 51916.5713 15876 0.0212 32 S. Dvorak (CCD) 0.0004 51923.5253 15886 0.0187 33 S. Dvorak (CCD) 0.0006 52224.7501 16319 0.0237 27 S. Dvorak (CCD) 0.0001 52259.5316 16369 0.0223 76 J. A. Howell (CCD) 0.0001 52585.801 16838 0.028 19 R. Hill 52604.5813 16865 0.0259 63 J. A. Howell (CCD) 0.0001 52611.5383 16875 0.0263 42 S. Dvorak (CCD) 0.0001 52684.5830 16980 0.0270 43 S. Jamieson (CCD) 0.0002 ------------------------------------------ AB AND JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 52236.540 48591 -0.011 13 C. Stephan 52254.619 48645.5 -0.020 18 G. Samolyk 52263.583 48672.5 -0.017 16 G. Samolyk 52299.592 48781 -0.018 15 G. Samolyk 52441.814 49209.5 -0.012 16 G. Samolyk 52489.765 49354 -0.019 13 B. Manske 52497.734 49378 -0.016 13 D. Williams 52503.3757 49395 -0.0163 25 Bal-Mai (CCD) 0.0002 52506.699 49405 -0.012 19 M. Simonsen 52507.692 49408 -0.015 11 M. Simonsen 52511.680 49420 -0.009 11 M. Simonsen 52525.779 49462.5 -0.016 15 G. Samolyk 52557.8068 49559 -0.0155 58 S. Dvorak (CCD) 0.0001 52558.634 49561.5 -0.018 16 G. Samolyk 52568.765 49592 -0.010 9 G. Sarty 52574.7335 49610 -0.0153 237 M. Nicholas (CCD) 0.0001 52576.7247 49616 -0.0155 94 M. Nicholas (CCD) 0.0001 52580.713 49628 -0.010 13 G. Sarty 52585.695 49643 -0.006 16 R. Hill 52587.674 49649 -0.019 11 C. Stephan 52601.617 49691 -0.015 89 J. A. Howell (CCD) 52602.617 49694 -0.011 19 C. Stephan 52609.586 49715 -0.012 18 C. Stephan 52616.5544 49736 -0.0129 31 G. Samolyk (CCD) 0.0002 52637.625 49799.5 -0.017 17 G. Samolyk ------------------------------------------ KO AQL JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 42998.743 388 0.017 12 D. Ruokonen 43313.778 498 0.006 17 D. Ruokonen 43714.733 638 -0.006 13 G. Samolyk 43734.774 645 -0.014 14 C. Hesseltine 44410.698 881 -0.007 16 G. Hanson 44410.698 881 -0.007 13 G. Samolyk 44473.708 903 -0.006 20 G. Hanson 45166.809 1145 -0.006 11 E. Halbach 45905.756 1403 0.014 15 D. Williams 46999.829 1785 0.018 19 P. Atwood 48855.738 2433 0.020 21 G. Samolyk 49637.630 2706 0.025 17 G. Samolyk 51384.734 3316 0.055 17 G. Samolyk 51699.779 3426 0.054 17 D. Williams 52524.6203 3714 0.0476 67 G. Samolyk (CCD) 0.0005 ------------------------------------------ V346 AQL JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 51812.584 8943 -0.004 18 C. Stephan 51843.562 8971 -0.004 14 R. Hays 51864.5779 8990 -0.0095 37 S. Dvorak (CCD) 0.0005 52094.7011 9198 -0.0098 109 S. Dvorak (CCD) 0.0001 52104.661 9207 -0.007 10 B. Manske 52135.644 9235 -0.002 13 R. Hays 52145.5937 9244 -0.0099 119 S. Dvorak (CCD) 0.0001 52176.5717 9272 -0.0100 85 S. Dvorak (CCD) 0.0001 52186.5294 9281 -0.0097 72 S. Dvorak (CCD) 0.0001 52228.569 9319 -0.012 11 M. Baldwin 52469.757 9537 -0.011 17 D. Williams 52489.672 9555 -0.010 8 B. Manske 52489.672 9555 -0.010 7 D. Weier 52531.717 9593 -0.007 6 G. Sarty 52541.675 9602 -0.007 12 R. Hays 52561.5862 9620 -0.0099 53 G. Samolyk (CCD) 0.0001 52561.587 9620 -0.009 14 R. Hays 52812.7309 9847 -0.0096 40 G. Samolyk (CCD) 0.0003 ------------------------------------------ RX ARI JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 43026.748 4495 0.009 9 D. Ruokonen 43026.756 4495 0.017 10 G. Wedemayer 43028.814 4497 0.016 15 G. Samolyk 43094.696 4561 0.002 15 G. Samolyk 44622.662 6045 0.003 18 G. Hanson 45315.602 6718 0.005 19 G. Samolyk 45352.673 6754 0.009 20 G. Samolyk 46114.618 7494 0.031 17 G. Samolyk 46774.582 8135 0.005 16 G. Samolyk 47539.611 8878 0.022 16 G. Samolyk 48137.822 9459 0.020 12 G. Samolyk 49666.8107 10944 0.0141 196 G. Lubcke (CCD) 0.0006 49696.6745 10973 0.0187 94 G. Lubcke (CCD) 0.0002 50041.611 11308 0.030 17 S. Cook (CCD) 52235.7547 13439 0.0412 108 S. Dvorak (CCD) 0.0001 52265.6128 13468 0.0401 57 S. Dvorak (CCD) 0.0002 52299.5906 13501 0.0403 53 G. Samolyk (CCD) 0.0005 52616.7182 13809 0.0431 49 G. Samolyk (CCD) 0.0003 52644.5186 13836 0.0436 51 S. Dvorak (CCD) 0.0002 ------------------------------------------ AP AUR JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 43050.833 1066.5 0.052 7 G. Samolyk 43100.908 1154.5 0.028 11 G. Samolyk 44629.660 3839.5 0.176 19 G. Samolyk 44670.646 3911.5 0.171 16 G. Samolyk 45026.574 4536.5 0.279 10 G. Samolyk 45405.707 5202.5 0.250 14 G. Samolyk 45762.678 5829.5 0.262 21 G. Samolyk 50503.798 14156.5 0.717 32 G. Stecher (CCD) 0.012 50529.6924 14202 0.7073 24 G. Stecher (CCD) 0.0014 51976.7739 16743.5 0.8811 103 S. Dvorak (CCD) 0.0007 51996.7001 16778.5 0.8814 35 G. Lubcke (CCD) 0.0003 52312.7036 17333.5 0.9164 15 G. Samolyk (CCD) 0.0008 52365.658 17426.5 0.9247 52 S. Dvorak (CCD) 0.001 52559.8158 17767.5 0.9470 48 G. Samolyk (CCD) 0.0004 52609.6354 17855 0.9517 58 G. Samolyk (CCD) 0.0006 52616.7529 17867.5 0.9528 30 S. Jamieson (CCD) 0.0004 52689.6346 17995.5 0.9625 51 S. Dvorak (CCD) 0.0004 52755.6823 18111.5 0.9700 105 C. Hesseltine (CCD)0.0003 ------------------------------------------ HP AUR JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 43035.931 196.5 0.001 9 G. Samolyk 43043.766 202 0.010 7 G. Samolyk 43045.891 203.5 0.001 21 G. Wedemayer 43045.893 203.5 0.003 22 G. Samolyk 43050.863 207 -0.007 13 G. Samolyk 43055.842 210.5 -0.008 9 G. Samolyk 43876.796 787.5 -0.017 12 G. Samolyk 43879.670 789.5 0.011 17 G. Samolyk 44132.934 : 967.5 0.015 26 G. Samolyk 44160.676 987 0.012 17 G. Samolyk 44222.573 1030.5 0.016 9 G. Samolyk 44236.787 1040.5 0.002 26 G. Samolyk 44522.779 1241.5 0.009 18 G. Samolyk 44958.871 1548 0.009 19 G. Samolyk 51937.7984 6453 0.0373 45 G. Samolyk (CCD) 0.0001 51987.5985 6488 0.0390 37 G. Lubcke (CCD) 0.0002 52300.6208 6708 0.0424 62 C. Hesseltine (CCD)0.0008 52320.5422 6722 0.0444 37 S. Dvorak (CCD) 0.0001 52337.6167 6734 0.0451 40 G. Samolyk (CCD) 0.0002 52374.6094 6760 0.0447 43 G. Samolyk (CCD) 0.0001 52618.6247 6931.5 0.0475 42 G. Samolyk (CCD) 0.0005 52714.6626 6999 0.0455 64 C. Hesseltine (CCD)0.0002 ------------------------------------------ TU BOO JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 50574.8962 53991 -0.0764 59 P. Kuebler (CCD) 0.0006 51012.678 55341 -0.082 14 G. Samolyk 51693.6711 57441 -0.0910 36 G. Samolyk (CCD) 0.0003 52028.6545 58474 -0.0958 94 G. Samolyk (CCD) 0.0002 52323.7518 59384 -0.0995 33 S. Dvorak (CCD) 0.0001 52373.6909 59538 -0.1006 16 S. Dvorak (CCD) 0.0002 52398.8230 59615.5 -0.1007 34 G. Samolyk (CCD) 0.0003 52405.635 59636.5 -0.099 13 C. Stephan 52407.5791 59642.5 -0.1004 17 S. Dvorak (CCD) 0.0001 52426.7118 59701.5 -0.1006 36 N. Simmons (CCD) 0.0002 52615.9292 60285 -0.1045 38 G. Samolyk (CCD) 0.0005 52728.7812 60633 -0.1043 38 G. Samolyk (CCD) 0.0002 52796.7179 60842.5 -0.1057 57 G. Samolyk (CCD) 0.0001 52769.6410 60759 -0.1047 30 G. Samolyk (CCD) 0.0003 ------------------------------------------ TY BOO JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 51370.674 53256.5 0.073 12 G. Samolyk 51685.7623 54250 0.0746 45 G. Samolyk (CCD) 0.0002 51690.6782 54265.5 0.0746 43 G. Lubcke (CCD) 0.0002 51974.6853 55161 0.0760 25 S. Dvorak (CCD) 0.0003 52021.6229 55309 0.0758 39 S. Dvorak (CCD) 0.0002 52025.5885 55321.5 0.0770 31 G. Samolyk (CCD) 0.0002 52037.6403 55359.5 0.0772 36 G. Samolyk (CCD) 0.0002 52349.8726 56344 0.0776 48 S. Dvorak (CCD) 0.0001 52416.6339 56554.5 0.0793 37 G. Samolyk (CCD) 0.0002 52448.6660 56655.5 0.0795 40 G. Samolyk (CCD) 0.0005 52615.9635 57183 0.0816 42 G. Samolyk (CCD) 0.0004 52651.9583 57296.5 0.0801 51 G. Samolyk (CCD) 0.0002 52728.8678 57539 0.0813 29 G. Samolyk (CCD) 0.0002 52740.6031 57576 0.0821 32 G. Samolyk (CCD) 0.0003 52762.6445 57645.5 0.0818 76 C. Hesseltine (CCD)0.0001 ------------------------------------------ TZ BOO JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 51678.6800 40536 0.0793 27 G. Lubcke (CCD) 0.0006 51685.6651 40559.5 0.0812 68 G. Lubcke (CCD) 0.0002 51693.6887 40586.5 0.0814 70 G. Samolyk (CCD) 0.0002 52015.6632 41670 0.0809 64 S. Dvorak (CCD) 0.0002 52021.6062 41690 0.0806 39 G. Samolyk (CCD) 0.0002 52028.740 41714 0.083 10 B. Manske 52047.7572 41778 0.0814 55 S. Dvorak (CCD) 0.0002 52353.6862 42807.5 0.0821 33 S. Dvorak (CCD) 0.0002 52384.8877 42912.5 0.0816 37 S. Dvorak (CCD) 0.0003 52404.6493 42979 0.0819 156 G. Lubcke (CCD) 0.0003 52448.6296 43127 0.0822 27 G. Samolyk (CCD) 0.0008 52659.9114 43838 0.0818 46 S. Dvorak (CCD) 0.0002 52728.8527 44070 0.0816 32 G. Samolyk (CCD) 0.0002 52742.6700 44116.5 0.0808 66 G. Samolyk (CCD) 0.0003 52752.6266 44150 0.0825 51 S. Dvorak (CCD) 0.0003 ------------------------------------------ R CMA JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 51544.689 6387 0.076 22 G. Samolyk 51586.688 6424 0.045 23 G. Samolyk 51602.617 6438 0.071 16 G. Samolyk 51610.561 6445 0.063 13 G. Samolyk 51644.632 6475 0.056 8 R. Schmude 51928.629 6725 0.068 11 C. Stephan 51937.711 6733 0.063 18 G. Samolyk 51961.579 6754 0.076 15 G. Samolyk 51978.606 6769 0.064 12 G. Samolyk 52230.812 6991 0.091 14 G. Samolyk 52312.590 7063 0.081 16 G. Samolyk 52354.612 7100 0.073 20 C. Stephan 52615.886 7330 0.081 22 G. Samolyk 52639.747 7351 0.087 18 G. Samolyk 52663.606 7372 0.092 16 G. Samolyk 52713.581 7416 0.085 13 G. Samolyk ------------------------------------------ SX CMA JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 43176.635 9285 -0.004 13 G. Samolyk 43556.701 9519 -0.015 17 G. Samolyk 43876.683 9716 -0.011 17 G. Samolyk 44654.710 10195 -0.004 16 G. Samolyk 45026.659 10424 -0.010 19 G. Samolyk 46413.795 11278 0.009 23 G. Samolyk 46496.631 11329 0.008 16 G. Samolyk 47170.696 11744 0.006 20 G. Samolyk 48661.768 12662 0.008 15 G. Samolyk 48705.619 12689 0.004 13 G. Samolyk 49012.611 12878 0.012 15 G. Samolyk 49374.814 13101 0.005 16 R. Hill 49777.638 13349 0.013 13 G. Samolyk 51947.6682 14685 0.0339 82 S. Dvorak (CCD) 0.0001 51986.6515 14709 0.0350 96 G. Samolyk (CCD) 0.0002 52319.6260 14914 0.0365 62 G. Samolyk (CCD) 0.0008 52358.6124 14938 0.0407 52 S. Dvorak (CCD) 0.0002 52616.8708 15097 0.0420 44 G. Samolyk (CCD) 0.0004 52678.5925 15135 0.0419 117 C. Hesseltine (CCD)0.0001 ------------------------------------------ XZ CMI JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 49779.639 12673 -0.015 13 G. Samolyk 49801.641 12711 -0.008 13 G. Samolyk 49812.639 12730 -0.008 15 G. Samolyk 50131.569 : 13281 -0.002 10 S. Cook (CCD) 50488.700 13898 0.004 12 G. Samolyk 50491.584 13903 -0.006 16 S. Cook (CCD) 50884.591 14582 -0.011 15 G. Samolyk 51244.6122 15204 -0.0092 65 G. Lubcke (CCD) 0.0005 51488.866 15626 -0.013 14 G. Samolyk 51579.747 15783 -0.005 13 G. Samolyk 51586.696 15795 -0.002 12 G. Samolyk 51957.7035 16436 -0.0111 43 C. Hesseltine (CCD)0.0002 51986.639 16486 -0.016 14 G. Samolyk 52244.7918 16932 -0.0124 34 S. Dvorak (CCD) 0.0001 52307.5945 17040.5 -0.0105 38 S. Dvorak (CCD) 0.0004 52362.5786 17135.5 -0.0133 43 S. Dvorak (CCD) 0.0005 52366.6329 17142.5 -0.0107 19 S. Dvorak (CCD) 0.0005 52602.7874 17550.5 -0.0104 31 S. Dvorak (CCD) 0.0003 52698.5773 17716 -0.0135 42 G. Samolyk (CCD) 0.0003 ------------------------------------------ RZ CAS JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 52415.709 7710 0.048 13 N. Simmons 52489.806 7772 0.040 19 B. Manske 52489.816 7772 0.050 15 G. Samolyk 52505.345 7785 0.041 13 S. Foglia 52525.667 7802 0.044 17 G. Samolyk 52548.368 7821 0.035 27 S. Foglia 52555.555 7827 0.050 21 G. Chaple 52560.331 7831 0.045 18 S. Foglia 52568.692 7838 0.040 11 G. Sarty 52586.623 7853 0.042 16 C. Stephan 52604.551 7868 0.041 21 J. A. Howell 52609.338 7872 0.047 22 S. Foglia 52610.532 7873 0.046 16 C. Stephan 52617.712 7879 0.055 11 G. Sarty 52641.609 7899 0.047 18 G. Samolyk 52652.365 7908 0.045 24 S. Foglia 52664.314 7918 0.042 10 S. Foglia 52678.661 7930 0.046 18 G. Samolyk ------------------------------------------ AB CAS JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 51805.602 6651 0.062 14 G. Samolyk 51887.619 6711 0.066 25 C. Stephan 51898.553 6719 0.065 15 R. Hays 52189.695 6932 0.063 18 G. Samolyk 52226.604 6959 0.066 15 M. Baldwin 52230.702 6962 0.064 39 M. Simonsen 52230.7022 6962 0.0641 98 S. Dvorak (CCD) 0.0001 52278.547 6997 0.068 14 R. Hays 52319.552 7027 0.067 11 M. Baldwin 52323.652 7030 0.066 14 M. Baldwin 52398.834 7085 0.070 18 B. Manske 52524.5838 7177 0.0678 36 G. Samolyk (CCD) 0.0002 52547.818 7194 0.065 13 R. Hays 52617.529 7245 0.066 11 R. Hays ------------------------------------------ CW CAS JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 51443.6186 30770 -0.0148 35 G. Lubcke (CCD) 0.0003 51576.5853 31187 -0.0144 28 G. Samolyk (CCD) 0.0003 51870.5749 32109 -0.0175 56 G. Samolyk (CCD) 0.0001 51919.5208 32262.5 -0.0172 38 G. Samolyk (CCD) 0.0001 51933.5496 32306.5 -0.0184 35 S. Dvorak (CCD) 0.0003 51948.5368 32353.5 -0.0179 39 S. Dvorak (CCD) 0.0004 52125.8253 32909.5 -0.0178 70 G. Samolyk (CCD) 0.0002 52185.7713 33097.5 -0.0182 65 S. Dvorak (CCD) 0.0001 52215.5816 33191 -0.0217 33 S. Dvorak (CCD) 0.0003 52230.5698 33238 -0.0202 72 G. Samolyk (CCD) 0.0002 52257.5154 33322.5 -0.0186 29 S. Dvorak (CCD) 0.0002 52489.8054 34051 -0.0211 10 G. Samolyk (CCD) 0.0007 52496.8194 34073 -0.0221 27 S. Dvorak (CCD) 0.0003 52518.6605 34141.5 -0.0232 61 G. Samolyk (CCD) 0.0003 52527.9082 34170.5 -0.0225 30 S. Dvorak (CCD) 0.0003 52639.5107 34520.5 -0.0225 15 G. Lubcke (CCD) 0.0002 52663.5834 34596 -0.0240 52 G. Samolyk (CCD) 0.0003 52678.5698 34643 -0.0242 49 G. Samolyk (CCD) 0.0003 ------------------------------------------ XX CEP JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 49605.620 2039 0.009 13 S. Cook (CCD) 50222.656 2303 -0.009 12 M. Baldwin 50264.729 2321 -0.008 10 S. Cook (CCD) 50367.568 2365 -0.012 13 G. Samolyk 50755.562 2531 -0.014 18 C. Stephan 50769.595 2537 -0.005 11 R. Hays 51407.673 2810 -0.017 13 M. Baldwin 51421.705 2816 -0.009 11 R. Hays 51538.557 2866 -0.023 12 R. Hays 51919.539 3029 -0.025 12 R. Hays 51933.566 3035 -0.022 13 R. Hays 51947.592 3041 -0.020 12 R. Hays 52307.533 3195 -0.028 22 S. Dvorak (CCD) 0.002 52426.739 3246 -0.025 14 B. Manske 52529.5768 3290 -0.0299 39 G. Samolyk (CCD) 0.0005 ------------------------------------------ DL CEP JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 43096.864 5612 -0.003 14 D. Ruokonen 43096.868 5612 0.001 14 G. Wedemayer 43326.772 5753 0.007 17 G. Samolyk 43701.771 5983 -0.005 17 G. Samolyk 44081.694 6216 0.016 16 G. Samolyk 44593.657 6530 0.008 23 G. Samolyk 45193.678 6898 0.012 17 G. Samolyk 45643.687 7174 0.008 16 G. Samolyk 46804.607 7886 0.026 20 G. Samolyk 47681.792 8424 0.012 17 G. Samolyk 51842.812 : 10976 0.045 9 R. Hill 52245.5409 11223 0.0446 51 G. Samolyk (CCD) 0.0003 52602.6192 11442 0.0476 36 S. Dvorak (CCD) 0.0003 52620.5526 11453 0.0458 30 G. Lubcke (CCD) 0.0002 ------------------------------------------ BR CYG JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 51397.775 7398 0.000 15 M. Baldwin 51429.758 7422 0.001 14 R. Berg 51433.752 7425 -0.002 19 M. Baldwin 51437.752 7428 0.000 20 M. Baldwin 52042.740 7882 0.004 12 D. Williams 52070.720 7903 0.000 13 D. Williams 52086.715 7915 0.005 13 M. Baldwin 52118.688 7939 -0.004 13 C. Stephan 52182.656 7987 0.001 14 D. Williams 52210.646 8008 0.007 14 G. Samolyk 52226.627 8020 -0.003 17 R. Hays 52226.629 8020 -0.001 12 M. Baldwin 52230.629 8023 0.001 15 M. Baldwin ------------------------------------------ CG CYG JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 51370.775 18927 0.047 11 G. Samolyk 51432.621 19025 0.041 12 R. Berg 51784.802 19583 0.046 9 R. Berg 51812.576 19627 0.049 10 C. Stephan 51836.560 19665 0.050 11 G. Samolyk 51853.593 19692 0.042 7 R. Berg 52221.557 20275 0.051 12 C. Stephan 52240.4848 20305 0.0447 33 S. Dvorak (CCD) 0.0001 52502.4108 20720 0.0472 15 Bal-Mai (CCD) 0.0006 52522.6065 20752 0.0464 46 G. Samolyk (CCD) 0.0002 52563.6311 20817 0.0468 FBAC GRB team (CCD)0.0001 52563.6327 20817 0.0484 141 M. Nicholas (CCD) 0.0001 52566.7871 20822 0.0471 100 M. Nicholas (CCD) 0.0001 52589.5082 20858 0.0471 26 S. Dvorak (CCD) 0.0001 52785.7927 21169 0.0468 34 G. Samolyk (CCD) 0.0002 ------------------------------------------ DK CYG JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 49988.584 25471 0.041 15 G. Samolyk 50003.6456 25503 0.0407 88 G. Lubcke (CCD) 0.0002 50313.824 26162 0.034 15 G. Samolyk 50341.613 26221 0.052 11 J. McKenna 50397.606 26340 0.033 12 J. McKenna 50692.740 26967 0.044 20 G. Samolyk 51095.660 27823 0.053 18 G. Samolyk 51160.598 27961 0.036 21 G. Samolyk 51777.674 29272 0.036 19 G. Samolyk 52163.6590 30092 0.0552 88 G. Samolyk (CCD) 0.0002 52245.5592 30266 0.0552 44 S. Dvorak (CCD) 0.0001 52253.5613 30283 0.0556 75 G. Samolyk (CCD) 0.0002 52441.8384 30683 0.0565 33 G. Samolyk (CCD) 0.0003 52525.6231 30861 0.0582 45 G. Samolyk (CCD) 0.0003 52811.8062 31469 0.0615 57 G. Samolyk (CCD) 0.0002 52526.5644 30863 0.0582 26 S. Dvorak (CCD) 0.0003 ------------------------------------------ KR CYG JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 51400.659 26379 -0.011 12 M. Baldwin 51411.648 26392 -0.009 15 M. Baldwin 51426.880 26410 0.011 14 M. Baldwin 51427.713 26411 -0.002 12 M. Baldwin 51432.789 26417 0.004 13 M. Baldwin 51433.641 26418 0.010 11 M. Baldwin 51438.707 26424 0.005 17 M. Baldwin 51444.625 26431 0.007 12 S. Cook (CCD) 51488.571 26483 0.006 18 M. Baldwin 51493.635 26489 -0.001 17 M. Baldwin 51510.545 26509 0.006 17 M. Baldwin 51815.647 26870 0.008 10 M. Baldwin 51837.618 26896 0.005 14 M. Baldwin 52027.7760 27121 0.0037 63 S. Dvorak (CCD) 0.0001 52225.543 27355 0.005 11 M. Baldwin 52230.612 27361 0.004 19 M. Baldwin 52499.3716 27679 0.0047 30 Bal-Mai (CCD) 0.0003 52596.5643 27794 0.0050 73 S. Dvorak (CCD) 0.0001 ------------------------------------------ FZ DEL JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 51734.814 26060 -0.035 11 D. Williams 51792.774 26134 -0.033 16 R. Hays 51818.617 26167 -0.036 8 D. Williams 51836.630 26190 -0.037 15 R. Hays 52132.689 26568 -0.032 16 R. Hays 52168.713 26614 -0.036 8 D. Williams 52205.5200 26661 -0.0401 22 J. Blackwell (CCD) 52219.619 26679 -0.039 13 G. Samolyk 52219.623 26679 -0.035 14 R. Hays 52241.5473 26707 -0.0406 60 S. Dvorak (CCD) 0.0001 52493.752 27029 -0.030 15 R. Hays 52497.659 27034 -0.039 8 D. Williams 52502.3555 27040 -0.0422 13 Bal-Mai (CCD) 0.0006 52548.570 27099 -0.037 15 C. Stephan 52555.619 27108 -0.037 13 R. Hays 52566.584 27122 -0.037 22 C. Stephan ------------------------------------------ Z DRA JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 51660.633 1338 -0.017 9 M. Baldwin 51664.704 1341 -0.018 16 M. Baldwin 51698.6392 1366 -0.0190 J. A. Howell (CCD) 0.0003 51937.5460 1542 -0.0208 70 G. Samolyk (CCD) 0.0001 52017.635 1601 -0.021 17 G. Samolyk 52021.7069 1604 -0.0210 98 S. Dvorak (CCD) 0.0001 52021.707 1604 -0.021 18 G. Samolyk 52184.5992 1724 -0.0209 81 G. Samolyk (CCD) 0.0001 52287.767 1800 -0.018 17 G. Samolyk 52314.914 1820 -0.020 13 D. Williams 52329.846 1831 -0.020 13 D. Williams 52522.6006 1973 -0.0210 46 G. Samolyk (CCD) 0.0001 52556.537 1998 -0.021 18 G. Chaple ------------------------------------------ RZ DRA JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 51400.654 13112 0.041 15 M. Baldwin 51406.709 13123 0.037 16 M. Baldwin 51407.806 13125 0.032 12 M. Baldwin 51411.663 13132 0.033 18 M. Baldwin 51427.638 13161 0.032 17 M. Baldwin 51438.658 13181 0.035 14 M. Baldwin 51454.642 13210 0.044 13 G. Samolyk 51629.819 13528 0.043 15 G. Samolyk 51693.712 13644 0.034 14 G. Samolyk 51698.684 13653 0.049 17 G. Samolyk 52077.674 14341 0.037 12 D. Williams 52163.614 14497 0.041 14 G. Samolyk 52179.591 14526 0.043 15 G. Samolyk 52184.5422 14535 0.0360 73 S. Dvorak (CCD) 0.0001 52223.665 14606 0.047 11 B. Manske 52515.6188 15136 0.0375 42 G. Samolyk (CCD) 0.0002 52729.9094 15525 0.0382 47 S. Dvorak (CCD) 0.0001 ------------------------------------------ TU HER JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 49812.789 2537 -0.053 17 M. Baldwin 49960.144 3) 2602 -0.053 21 G. Samolyk 50211.774 2713 -0.060 16 R. Hill 50304.721 2754 -0.060 21 M. Baldwin 50669.711 2915 -0.057 22 G. Samolyk 50950.804 3039 -0.073 17 C. Hesseltine 50950.808 3039 -0.069 22 G. Samolyk 50984.806 3054 -0.076 22 R. Hill 51705.694 3372 -0.094 11 D. Williams 51705.695 3372 -0.093 21 G. Samolyk 51748.769 3391 -0.092 16 G. Samolyk 51773.7012 3402 -0.0965 J. A. Howell (CCD) 0.0001 52070.671 3533 -0.104 14 D. Williams 52104.675 3548 -0.105 17 G. Samolyk 52435.650 3694 -0.112 23 C. Stephan 52775.6804 3844 -0.1315 61 G. Samolyk (CCD) 0.0002 3) Observations combined from 49955 to 49964 ------------------------------------------ DF HYA JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 49060.686 18974 0.006 12 G. Samolyk 49064.640 18986 -0.008 17 G. Samolyk 49754.621 21073 0.000 14 G. Samolyk 50152.667 22277 -0.002 12 G. Samolyk 50523.608 23399 0.000 13 G. Samolyk 50921.654 24603 -0.003 11 G. Samolyk 50926.623 24618 0.007 14 G. Samolyk 51957.761 27737 -0.013 14 G. Samolyk 51958.765 27740 -0.001 13 G. Samolyk 52017.607 27918 -0.006 14 G. Samolyk 52021.5697 27930 -0.0108 47 S. Dvorak (CCD) 0.0001 52223.909 28542 -0.002 13 B. Manske 52334.6555 28877 -0.0082 66 S. Dvorak (CCD) 0.0001 52370.6911 28986 -0.0085 38 G. Samolyk (CCD) 0.0002 52386.5595 29034 -0.0092 22 S. Dvorak (CCD) 0.0001 52607.8992 29703.5 -0.0097 48 S. Dvorak (CCD) 0.0001 52732.7036 30081 -0.0088 35 S. Dvorak (CCD) 0.0003 52735.6780 30090 -0.0098 44 G. Samolyk (CCD) 0.0002 ------------------------------------------ DK HYA JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 48297.788 10450 -0.001 17 G. Samolyk 48331.715 10515 0.001 16 G. Samolyk 48654.789 11134 0.006 16 G. Samolyk 49460.633 12678 0.004 15 G. Samolyk 50152.693 14004 -0.002 16 G. Samolyk 50488.815 14648 0.003 16 G. Samolyk 51144.870 15905 0.003 16 G. Samolyk 51245.607 16098 0.010 19 G. Samolyk 51629.7363 16834 0.0052 107 C. Hesseltine (CCD)0.0001 52006.5618 17556 0.0040 47 S. Dvorak (CCD) 0.0001 52007.6055 17558 0.0038 56 G. Samolyk (CCD) 0.0002 52018.5660 17579 0.0040 32 S. Dvorak (CCD) 0.0001 52330.6758 18177 0.0052 30 S. Dvorak (CCD) 0.0001 52364.6004 18242 0.0050 46 G. Samolyk (CCD) 0.0002 52389.6531 18290 0.0055 42 G. Samolyk (CCD) 0.0004 52678.7976 18844 0.0059 44 G. Samolyk (CCD) 0.0003 52735.6860 18953 0.0050 40 G. Samolyk (CCD) 0.0004 ------------------------------------------ SW LAC JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 52254.644 21761.5 -0.072 20 G. Samolyk 52256.556 21767.5 -0.084 14 C. Stephan 52263.619 21789.5 -0.077 15 G. Samolyk 52265.539 21795.5 -0.081 13 C. Stephan 52286.560 21861 -0.067 14 G. Samolyk 52506.719 : 22547.5 -0.083 16 M. Simonsen 52511.702 : 22563 -0.071 12 M. Simonsen 52525.808 22607 -0.077 14 G. Samolyk 52552.582 22690.5 -0.083 14 C. Stephan 52558.6744 22709.5 -0.0846 114 M. Nicholas (CCD) 0.0003 52564.7681 22728.5 -0.0846 28 S. Dvorak (CCD) 0.0001 52566.6928 22734.5 -0.0842 123 M. Nicholas (CCD) 0.0001 52586.5769 22796.5 -0.0848 60 S. Dvorak (CCD) 0.0001 52586.582 22796.5 -0.080 13 C. Stephan 52587.540 22799.5 -0.084 13 C. Stephan 52602.609 22846.5 -0.089 16 C. Stephan 52637.578 22955.5 -0.078 12 G. Samolyk ------------------------------------------ CM LAC JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 51839.671 15463 0.009 11 G. Samolyk 51868.549 15481 0.002 16 C. Stephan 51871.760 15483 0.004 14 R. Hill 51876.569 15486 -0.001 20 C. Stephan 52041.8504 15589 -0.0030 98 S. Dvorak (CCD) 0.0001 52115.667 15635 -0.002 15 C. Stephan 52168.622 15668 -0.002 13 D. Williams 52184.665 15678 -0.006 12 R. Hays 52221.573 15701 -0.006 15 C. Stephan 52266.5073 15729 -0.0029 52 S. Dvorak (CCD) 0.0001 52521.659 15888 0.003 13 R. Hays 52619.539 15949 -0.003 12 R. Hays 52627.5640 15954 -0.0018 106 S. Dvorak (CCD) 0.0001 ------------------------------------------ CO LAC JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 43112.649 10101.5 -0.033 11 G. Samolyk 44089.684 10735 0.014 15 G. Samolyk 44921.684 11274.5 -0.007 14 G. Samolyk 44938.650 11285.5 -0.006 15 G. Samolyk 45200.811 11455.5 -0.020 16 R. Lee 45200.820 11455.5 -0.011 16 E. Halbach 45578.685 11700.5 0.013 20 G. Samolyk 47466.318 12924.5 -0.016 17 G. Samolyk 47859.604 13179.5 0.007 18 G. Samolyk 48900.589 13854.5 0.002 16 G. Samolyk 50685.669 15012 -0.023 14 S. Cook (CCD) 51049.638 15248 -0.015 14 S. Cook (CCD) 51130.6287 15300.5 0.0100 82 G. Samolyk (CCD) 0.0006 51160.675 15320 -0.017 52 G. Samolyk (CCD) 0.002 51538.5161 15565 -0.0164 63 G. Samolyk (CCD) 0.0002 51915.6152 15809.5 0.0129 63 G. Samolyk (CCD) 0.0003 52069.8359 15909.5 0.0129 69 G. Samolyk (CCD) 0.0004 52225.5982 16010.5 0.0122 82 G. Samolyk (CCD) 0.0003 52299.6211 16058.5 0.0092 31 G. Samolyk (CCD) 0.0008 52494.6846 16185 -0.0166 59 S. Dvorak (CCD) 0.0002 52602.6391 16255 -0.0166 35 G. Samolyk (CCD) 0.0002 52616.5195 16264 -0.0161 36 G. Samolyk (CCD) 0.0003 52663.5844 16294.5 0.0115 51 G. Samolyk (CCD) 0.0005 ------------------------------------------ VZ LEO JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 44286.773 12040 -0.011 12 G. Hanson 44660.626 12383 0.004 15 G. Samolyk 45060.626 12750 0.008 14 G. Samolyk 45753.782 13386 -0.016 11 G. Samolyk 46820.769 14365 -0.047 13 G. Samolyk 46915.632 14452 -0.006 9 G. Samolyk 49061.630 16421 -0.032 11 G. Samolyk 49801.674 17100 -0.035 15 G. Samolyk 50164.632 : 17433 -0.015 11 S. Cook (CCD) 51995.6359 19113 -0.0535 25 G. Lubcke (CCD) 0.0004 51997.801 : 19115 -0.068 19 R. Hill 52007.6248 19124 -0.0535 61 C. Hesseltine (CCD)0.0005 52371.6521 19458 -0.0548 25 S. Dvorak (CCD) 0.0004 52651.7583 19715 -0.0545 15 G. Samolyk (CCD) 0.0010 52735.6770 19792 -0.0586 36 G. Lubcke (CCD) 0.0003 52783.636 19836 -0.055 60 G. Samolyk (CCD) 0.001 ------------------------------------------ Z LEP JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 49005.667 21718 -0.146 19 G. Samolyk 49012.627 21725 -0.142 19 G. Samolyk 49283.907 21998 -0.147 13 G. Samolyk 50110.670 22830 -0.154 15 G. Samolyk 50113.651 22833 -0.155 14 G. Samolyk 51223.643 23950 -0.142 17 G. Samolyk 51224.636 23951 -0.143 19 G. Samolyk 51530.6951 24259 -0.1481 50 G. Samolyk (CCD) 0.0002 52337.5854 25071 -0.1544 48 G. Samolyk (CCD) 0.0003 52609.8619 25345 -0.1558 33 G. Samolyk (CCD) 0.0003 52637.6860 25373 -0.1557 43 S. Dvorak (CCD) 0.0001 52646.6291 25382 -0.1560 38 S. Dvorak (CCD) 0.0002 52650.6047 25386 -0.1553 37 G. Samolyk (CCD) 0.0003 ------------------------------------------ FL LYR JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 49874.676 5350 -0.003 9 R. Hays 50253.677 5524 0.000 15 S. Cook (CCD) 50266.751 5530 0.005 12 R. Hays 50693.664 5726 -0.001 15 R. Hays 50959.398 5848 -0.001 12 D. Matsnev 51085.748 5906 0.016 13 R. Hill 51390.6732 6046 -0.0008 J. A. Howell (CCD) 0.0018 51438.5917 6068 -0.0017 J. A. Howell (CCD) 0.0003 51793.641 6231 0.008 13 R. Hays 52063.7217 6355 -0.0020 50 S. Dvorak (CCD) 0.0001 52087.683 6366 0.000 13 R. Hays 52370.8451 6496 0.0016 26 S. Jamieson (CCD) 0.0003 52405.693 6512 -0.001 20 C. Stephan 52466.6808 6540 -0.0015 47 S. Dvorak (CCD) 0.0001 ------------------------------------------ U OPH JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 49857.700 3244 0.003 17 S. Cook (CCD) 49872.801 3253 0.008 13 G. Samolyk 49998.586 3328 -0.008 10 R. Schmude 50221.672 3461 -0.009 9 R. Schmude 50320.658 3520 0.013 10 N. Simmons 50642.701 : 3712 0.006 7 R. Schmude 50733.270 : 3766 -0.002 18 S. Foglia 50914.434 : 3874 0.009 8 D. Matsnev 51048.614 3954 0.001 10 R. Schmude 51361.441 4140.5 0.003 16 S. Foglia 51370.679 4146 0.015 15 G. Samolyk 51702.770 4344 -0.008 11 R. Schmude 51809.287 4407.5 -0.003 9 S. Foglia ------------------------------------------ V1010 OPH JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 51690.668 19281 -0.058 14 G. Samolyk 52078.253 19867 -0.069 16 G. Samolyk 52081.558 19872 -0.071 17 G. Samolyk 52089.505 19884 -0.061 19 G. Samolyk 52104.703 19907 -0.076 13 B. Manske 52104.704 19907 -0.075 15 G. Samolyk 52149.685 19975 -0.071 17 G. Samolyk 52426.822 20394 -0.071 13 B. Manske 52434.749 20406 -0.082 13 D. Williams 52440.697 20415 -0.086 9 D. Weier 52442.686 20418 -0.082 11 D. Williams 52489.636 20489 -0.093 11 B. Manske 52489.644 20489 -0.085 9 D. Weier 52489.656 20489 -0.073 12 G. Samolyk ------------------------------------------ GU ORI JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 51488.7227 17886.5 -0.0160 47 G. Samolyk (CCD) 0.0002 51544.7311 18005.5 -0.0186 82 G. Samolyk (CCD) 0.0002 51586.6216 18094.5 -0.0188 29 G. Lubcke (CCD) 0.0002 51602.6253 18128.5 -0.0182 64 C. Hesseltine (CCD)0.0002 51881.7348 18721.5 -0.0225 21 G. Samolyk (CCD) 0.0003 51912.5648 18787 -0.0221 75 G. Samolyk (CCD) 0.0004 51930.677 18825.5 -0.031 15 R. Hill 51939.621 : 18844.5 -0.030 13 R. Hill 52312.6396 19637 -0.0262 66 G. Samolyk (CCD) 0.0005 52337.5850 19690 -0.0269 54 G. Samolyk (CCD) 0.0004 52609.8730 20268.5 -0.0278 43 G. Samolyk (CCD) 0.0003 52610.8135 20270.5 -0.0287 41 S. Dvorak (CCD) 0.0002 52625.8747 20302.5 -0.0293 24 S. Dvorak (CCD) 0.0004 52662.5902 20380.5 -0.0269 70 G. Samolyk (CCD) 0.0005 52669.6486 20395.5 -0.0287 57 G. Samolyk (CCD) 0.0005 52701.6544 20463.5 -0.0292 29 G. Lubcke (CCD) 0.0002 ------------------------------------------ BB PEG JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 51433.601 21215 0.001 12 G. Samolyk 51452.587 21267.5 0.008 15 G. Samolyk 51486.569 21361.5 0.008 12 G. Samolyk 51837.578 22332.5 -0.001 15 G. Samolyk 51873.5492 22432 0.0007 42 G. Samolyk (CCD) 0.0002 51897.594 22498.5 0.006 16 G. Samolyk 52075.8100 22991.5 0.0011 61 S. Dvorak (CCD) 0.0002 52133.656 23151.5 0.007 14 G. Samolyk 52183.5368 23289.5 0.0003 58 S. Dvorak (CCD) 0.0001 52215.5305 23378 0.0010 30 S. Dvorak (CCD) 0.0005 52254.5713 23486 -0.0004 82 G. Samolyk (CCD) 0.0001 52264.5139 23513.5 0.0009 31 S. Dvorak (CCD) 0.0002 52504.3689 24177 -0.0008 24 Bal-Mai (CCD) 0.0004 52525.6987 24236 0.0004 31 G. Samolyk (CCD) 0.0006 52584.6223 24399 -0.0008 29 S. Dvorak (CCD) 0.0002 ------------------------------------------ DI PEG JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 49743.564 6388 -0.010 12 G. Samolyk 49950.702 6679 -0.010 11 S. Cook (CCD) 50044.670 6811 -0.002 15 G. Samolyk 50313.737 7189 -0.002 12 G. Samolyk 50318.714 7196 -0.008 10 S. Cook (CCD) 50716.615 7755 -0.012 15 G. Samolyk 51076.794 8261 -0.013 12 D. Williams 51079.640 8265 -0.014 12 D. Williams 51084.629 8272 -0.008 15 G. Samolyk 51141.569 8352 -0.013 16 G. Samolyk 51432.701 8761 -0.014 14 D. Williams 51452.631 8789 -0.015 16 G. Samolyk 51467.579 8810 -0.015 12 D. Williams 51842.706 9337 -0.015 10 R. Hill 52168.718 9795 -0.016 11 D. Williams 52203.597 9844 -0.016 10 D. Williams ------------------------------------------ GP PEG JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 49712.517 : 8686 -0.028 9 M. Baldwin 49901.801 8880 -0.014 13 M. Baldwin 49988.623 8969 -0.022 12 M. Baldwin 50305.698 9294 -0.023 12 M. Baldwin 50349.591 9339 -0.033 18 M. Baldwin 50431.561 9423 -0.014 8 M. Baldwin 50662.775 9660 -0.022 13 M. Baldwin 50666.665 9664 -0.034 10 M. Baldwin 50668.620 9666 -0.031 7 M. Baldwin 51027.658 10034 -0.020 12 M. Baldwin 51069.603 10077 -0.027 10 M. Baldwin 51510.573 10529 -0.036 16 M. Baldwin 51551.562 10571 -0.022 15 M. Baldwin ------------------------------------------ Y PSC JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 50304.769 1240 -0.023 19 M. Baldwin 50304.772 1240 -0.020 14 G. Samolyk 50338.664 1249 -0.020 19 M. Baldwin 50372.559 1258 -0.017 11 M. Baldwin 50410.212 4) 1268 -0.022 20 J. McKenna 50722.773 1351 -0.019 15 M. Baldwin 50741.599 1356 -0.022 20 M. Baldwin 51027.805 1432 -0.014 11 M. Baldwin 51513.589 1561 -0.014 17 M. Baldwin 51833.6789 1646 -0.0146 J. A. Howell (CCD) 0.0001 52168.834 1735 -0.013 17 G. Samolyk 52221.561 1749 -0.006 15 M. Baldwin 52507.761 1825 -0.005 19 M. Simonsen 4) Observations combined from 50402 to 50421 ------------------------------------------ UZ PUP JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 50498.774 :5) 7404 -0.003 18 C. Stephan 50867.586 7868 -0.002 15 G. Samolyk 50871.568 7873 0.006 13 C. Stephan 50898.590 7907 0.003 15 C. Stephan 51160.887 8237 -0.001 18 G. Samolyk 51223.682 8316 0.001 18 G. Samolyk 51256.653 8357.5 -0.014 13 G. Samolyk 51262.628 8365 -0.001 13 C. Stephan 51579.774 8764 0.000 16 G. Samolyk 51930.695 9205.5 -0.006 13 G. Samolyk 52010.5790 9306 -0.0046 41 S. Dvorak (CCD) 0.0001 52312.627 9686 0.000 17 G. Samolyk 52322.5592 9698.5 -0.0035 41 S. Dvorak (CCD) 0.0002 52678.6526 10146.5 -0.0034 23 G. Samolyk (CCD) 0.0007 52694.5485 10166.5 -0.0045 19 S. Dvorak (CCD) 0.0003 52713.6247 10190.5 -0.0047 63 G. Samolyk (CCD) 0.0004 5) Observations combined from 50461 to 50536 ------------------------------------------ AV PUP JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 50140.483 6) 34084 0.097 51 C. Stephan 50488.718 34710 0.064 13 G. Samolyk 50492.628 34717 0.079 17 G. Samolyk 50845.646 35351.5 0.100 14 C. Stephan 50850.642 35360.5 0.089 18 C. Stephan 51201.701 35991.5 0.098 18 C. Stephan 51215.609 36016.5 0.098 10 C. Stephan 51229.540 36041.5 0.121 15 C. Stephan 51257.604 36092 0.089 18 C. Stephan 51260.639 36097.5 0.065 27 C. Stephan 51262.612 36101 0.090 22 C. Stephan 51581.666 36674.5 0.084 22 C. Stephan 52002.5424 37431 0.0900 22 S. Dvorak (CCD) 0.0004 6) Observations combined from 50095 to 50185 ------------------------------------------ V TRI JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 51835.5974 46755 -0.0001 77 S. Dvorak (CCD) 0.0004 51869.5414 46813 0.0020 J. A. Howell (CCD) 0.0001 51870.7109 46815 0.0011 31 S. Dvorak (CCD) 0.0009 51873.637 46820 0.001 14 G. Samolyk 51876.570 46825 0.008 14 C. Stephan 51897.629 46861 0.000 14 C. Stephan 51897.6312 46861 0.0019 40 S. Dvorak (CCD) 0.0002 51948.5432 46948 0.0010 J. A. Howell (CCD) 0.0002 52207.786 47391 -0.002 15 R. Hill 52223.591 47418 0.002 16 M. Baldwin 52230.610 47430 -0.001 15 M. Baldwin 52230.6117 47430 0.0003 56 S. Dvorak (CCD) 0.0001 52230.613 47430 0.002 16 C. Stephan 52305.5171 47558 -0.0006 25 S. Dvorak (CCD) 0.0002 52587.590 48040 0.003 18 C. Stephan 52618.6029 48093 0.0002 48 G. Samolyk (CCD) 0.0002 52628.5515 48110 0.0003 34 S. Dvorak (CCD) 0.0001 52635.574 48122 0.000 23 G. Chaple ------------------------------------------ W UMA JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 51250.7065 16440 -0.0323 82 G. Lubcke (CCD) 0.0001 51937.834 18499.5 -0.031 15 G. Samolyk 51943.329 : 18516 -0.041 6 S. Foglia 51993.712 18667 -0.038 13 D. Williams 52021.737 18751 -0.038 14 G. Samolyk 52223.758 19356.5 -0.035 8 B. Manske 52252.789 19443.5 -0.030 17 G. Samolyk 52268.467 19490.5 -0.033 14 S. Foglia 52307.659 19608 -0.043 14 G. Samolyk 52329.690 19674 -0.032 12 D. Williams 52370.727 19797 -0.033 13 G. Samolyk 52398.415 19880 -0.037 10 M. Csukas 52426.773 19965 -0.038 12 B. Manske 52652.311 20641 -0.039 11 S. Foglia 52664.310 20677 -0.051 9 S. Foglia ------------------------------------------ XZ UMA JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 51937.7179 4720 -0.0585 72 C. Hesseltine (CCD)0.0001 51964.6098 4742 -0.0576 J. A. Howell (CCD) 0.0001 51992.726 4765 -0.055 11 C. Stephan 52025.726 4792 -0.057 15 R. Hays 52041.617 4805 -0.057 16 C. Stephan 52063.6151 4823 -0.0603 83 S. Dvorak (CCD) 0.0001 52300.747 5017 -0.058 10 M. Simonsen 52305.6323 5021 -0.0624 45 S. Dvorak (CCD) 0.0001 52316.640 5030 -0.056 14 G. Samolyk 52404.6390 5102 -0.0636 31 S. Dvorak (CCD) 0.0001 52404.639 5102 -0.064 15 R. Hays 52448.6404 5138 -0.0658 25 C. Hesseltine (CCD)0.0005 52656.441 5308 -0.060 15 J. Virtanen 52811.6658 5435 -0.0694 35 G. Samolyk (CCD) 0.0002 ------------------------------------------ W UMI JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 50151.123 7) 9681 -0.107 21 S. Cook (CCD) 50387.591 9820 -0.100 21 G. Samolyk 50523.677 9900 -0.106 28 G. Samolyk 50921.751 10134 -0.103 23 G. Samolyk 50950.668 10151 -0.106 11 D. Williams 50984.696 10171 -0.101 9 D. Williams 51110.568 10245 -0.115 12 D. Williams 51282.351 10346 -0.149 13 S. Foglia 51411.667 10422 -0.121 15 D. Williams 51411.684 10422 -0.104 21 G. Samolyk 51731.454 10610 -0.151 14 S. Foglia 51789.324 8) 10644 -0.120 17 G. Samolyk 51986.664 10760 -0.115 23 G. Samolyk 52042.796 10793 -0.121 12 D. Williams 52609.263 11126 -0.139 14 S. Foglia 7) Observations combined from 50142 to 50159 8) Observations combined from 51775 to 51804 ------------------------------------------ RU UMI JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 51995.6398 19811 -0.0093 J. A. Howell (CCD) 0.0001 52006.6633 19832 -0.0092 76 S. Dvorak (CCD) 0.0001 52027.6602 19872 -0.0093 72 S. Dvorak (CCD) 0.0001 52027.669 19872 -0.001 17 C. Stephan 52036.5842 19889 -0.0091 74 S. Dvorak (CCD) 0.0001 52047.6068 19910 -0.0099 63 S. Dvorak (CCD) 0.0004 52048.659 19912 -0.008 16 C. Stephan 52225.566 20249 -0.001 19 G. Samolyk 52299.566 20390 -0.015 17 G. Samolyk 52311.647 20413 -0.008 21 G. Samolyk 52314.799 20419 -0.005 15 D. Williams 52342.621 20472 -0.004 13 C. Stephan 52383.5591 20550 -0.0104 19 S. Dvorak (CCD) 0.0004 52396.6825 20575 -0.0102 18 S. Dvorak (CCD) 0.0001 ------------------------------------------ AZ VIR JD(min) STANDARD HEL. CYCLE O-C N OBSERVER ERROR 2400000 + 51663.582 21984 0.004 12 C. Stephan 51693.628 22070 -0.021 18 C. Stephan 51971.7906 22865.5 -0.0170 39 G. Samolyk (CCD) 0.0002 52015.673 22991 -0.018 18 C. Stephan 52021.6176 23008 -0.0173 33 G. Samolyk (CCD) 0.0003 52027.572 23025 -0.007 11 C. Stephan 52041.565 23065 -0.001 10 C. Stephan 52046.6171 23079.5 -0.0188 48 S. Dvorak (CCD) 0.0007 52048.559 : 23085 0.000 6 C. Stephan 52398.7309 24086.5 -0.0178 44 G. Samolyk (CCD) 0.0002 52402.5766 24097.5 -0.0184 26 S. Dvorak (CCD) 0.0002 52405.712 24106.5 -0.030 15 C. Stephan 52678.8129 24887.5 -0.0175 28 G. Samolyk (CCD) 0.0002 52731.7862 25039 -0.0185 14 S. Dvorak (CCD) 0.0005 52739.6559 25061.5 -0.0163 63 G. Samolyk (CCD) 0.0003 ------------------------------------------ END OF OBSERVED TIMES OF MINIMA NUMBER 8 ------------------------------------------