PAGE i OBSERVED MINIMA TIMINGS OF ECLIPSING BINARIES NUMBER 5 Prepared by: Marvin E. Baldwin Chairman, AAVSO Eclipsing Binary Committee Gerard Samolyk AAVSO Eclipsing Binary Committee October 1999 ----------------------------------------------------------------------------- PAGE ii Funds for publication were provided by The Harold S. Martin Fund. ISBN 1-878174-31-2 COPYRIGHT 1999 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 1050 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, 2, 3, and 4. Except where otherwise specified, all minima are determined from visual observations reduced by the authors using a computerized tracing paper method. The tracing paper software was written specifically for this purpose by Ron Baldwin and Gerard Samolyk. 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 Julian Date. Some observations made using photoelectric photometry (PEP) or a charge-coupled device (CCD) were reduced by the observers, using the method of Kwee and Van Worden (1957). The standard error is included in a footnote in each of these cases. Linear elements in the General Catalogue of Variable Stars (Kholopov et al. 1985) were used to compute the O-C's, with the exception of CW Cas, Beta Lyr, and GU Ori. 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. 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 (198.116.78.2) in /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, 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, Journ. Amer. Assoc. Var. Star Obs., 3, 60. 17 Baldwin, M. E. 1975, Journ. Amer. Assoc. Var. Star Obs., 4, 86. 18 Baldwin, M. E. 1976, Journ. Amer. Assoc. Var. Star Obs., 5, 29. 19 Baldwin, M. E. 1976, Journ. Amer. Assoc. Var. Star Obs., 5, 84. 20 Baldwin, M. E. 1977, Journ. Amer. Assoc. Var. Star Obs., 6, 24. 21 Baldwin, M. E. 1978, Journ. Amer. Assoc. Var. Star Obs., 7, 28. 22 Samolyk, G. 1985, Journ. Amer. Assoc. Var. Star Obs., 14, 12. 23 Samolyk, G. 1992, Journ. Amer. Assoc. Var. Star Obs., 21, 34. 24 Samolyk, G. 1992, Journ. Amer. Assoc. Var. Star Obs., 21, 111. 25 Baldwin, M. E., and Samolyk, G. 1993, Observed Minima Timings of Eclipsing Binaries No. 1, AAVSO, Cambridge, MA. 26 Baldwin, M. E., and Samolyk, G. 1995, Observed Minima Timings of Eclipsing Binaries No. 2, AAVSO, Cambridge, MA. 27 Baldwin, M. E., and Samolyk, G. 1996, Observed Minima Timings of Eclipsing Binaries No. 3, AAVSO, Cambridge, MA. 28 Baldwin, M. E., and Samolyk, G. 1997, Observed Minima Timings of Eclipsing Binaries No. 4, AAVSO, Cambridge, MA. 29 Kholopov, P. N., et al. 1985, General Catalogue of Variable Stars, Fourth Edition, Moscow. 30 Kwee, K. K., and Van Worden, H. 1957, Bull. Astron. Inst. Netherlands, 12, 327. 31 Rudinicki K., et al. 1993, Supplemento ad Annuario Cracoviense, 64, Krakow. ----------------------------------------------------------------------------- PAGE vii Note: table continues past column 80 -----> TABLE 1 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 RT AND X X X X X X X X X X X X X X X X X X WZ AND X X X X X X X AB AND X X X X X X X X X X X X OO AQL X X X X X X X X X X X X X X X X X X TT AUR X TY BOO X TZ BOO SV CAM X X X X X X X X X X X X X X X X X R CMA X X X X X X X X X X X RW CAP X RZ CAS X X X X X X X X X X X X X X X X X X X X X CW CAS X DK CEP EG CEP X X X X X X X X X X RW COM X X RZ COM X X BR CYG X X X X CG CYG X KR CYG X MY CYG V346 CYG V387 CYG X TY DEL X X X X X X X RZ DRA X X S EQU YY ERI X X X X X X X X X RX HER X 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 SW LAC X X X X X X X X X X X X X X X X VX LAC X X X X X X X X X X Y LEO X X X X X X X X X X X X UU LEO SS LIB X X X EW LYR X X X X X X X BETA LYR X X X X V1010 OPH ER ORI X X X X X X X X GU ORI X BB PEG X KW PER X BETA PER X X X X X X X X X X X X X RV PSC X TRI X X X X X X X X X X X X X X X TY UMA X UX UMA X VV UMA X X X X X X X Z VUL AW VUL X X X X AX VUL BO VUL 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 1996 1998 41141.88902 0.628929513 WZ AND 1966 1992 1998 40872.290 0.6956576 AB AND 1966 1996 1998 36109.57928 0.33189215 OO AQL 1960 1996 1998 38613.2222 0.50678848 TT AUR 1974 1976 1998 21242.2564 1.332735 TY BOO 1977 1992 1999 34480.425 0.31714770 TZ BOO 1977 1977 1999 39632.8418 0.297162 SV CAM 1964 1992 1998 42594.61518 0.59306995 R CMA 1963 1995 1998 44289.361 1.1359405 RW CAP 1975 1976 1996 42664.532 3.392446 RZ CAS 1961 1993 1998 43200.3063 1.195247 CW CAS 1977 1992 1998 41632.185 0.3188641 (23) DK CEP 1976 1976 1998 33590.5630 0.9859064 EG CEP 1966 1997 1998 42594.3825 0.54462183 RW COM 1974 1993 1999 40022.4163 0.2373459 RZ COM 1969 1995 1998 34837.4198 0.33850604 BR CYG 1968 1998 1999 41539.4654 1.33256415 CG CYG 1976 1992 1998 39425.1221 0.63114100 KR CYG 1987 1995 1998 29106.413 0.8451517 MY CYG 1976 1976 1998 33847.607 4.0051873 V346 CYG 1978 1978 1998 35686.750 2.743282 V387 CYG 1976 1993 1998 27985.461 0.6405964 TY DEL 1965 1992 1998 42959.4450 1.19112689 RZ DRA 1975 1992 1999 44177.5555 0.5508738 S EQU 1978 1978 1997 42596.74348 3.4360969 YY ERI 1968 1997 1999 41581.624 0.32149415 RX HER 1965 1976 1995 33170.398 1.7785724 SZ HER 1959 1997 1998 41864.30517 0.81809828 SW LAC 1965 1996 1998 45275.3477 0.3207209 VX LAC 1966 1992 1998 45258.466 1.0744942 Y LEO 1963 1991 1998 45436.451 1.6861020 UU LEO 1976 1976 1997 45397.456 1.6797409 SS LIB 1965 1977 1995 41155.660 1.4379983 EW LYR 1968 1992 1998 44755.526 1.9487638 BETA LYR 1936 1996 1998 48990.54 12.93784 (31) V1010 OPH 1987 1987 1998 38937.7690 0.66142613 ER ORI 1968 1995 1999 41626.415 0.4233987 GU ORI 1976 1985 1999 43069.903 0.470681 (22) BB PEG 1977 1995 1998 43764.3334 0.3615021 KW PER 1975 1976 1998 42404.332 0.93125884 BETA PER 1963 1986 1998 45641.5135 2.8673043 RV PSC 1977 1977 1999 24381.480 0.55399145 X TRI 1960 1995 1998 42502.721 0.9715352 TY UMA 1976 1994 1999 39532.4965 0.354538609 UX UMA 1976 1995 1999 37432.8204 0.19667128 VV UMA 1969 1992 1999 45815.3365 0.687380 Z VUL 1984 1984 1998 42947.4777 2.454934 AW VUL 1966 1976 1993 46285.465 0.80645141 AX VUL 1977 1977 1995 44853.390 2.0248386 BO VUL 1976 1995 1998 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 E. Anderson 3 R. Hill 29 P. Atwood 13 D. Kaiser (CCD) 1 M. Baldwin 115 K. Krueger 1 R. Berg 67 S. Laskowski 2 H. Carney 1 G. Lubcke (CCD) 12 G. Chaple 23 M. Marco 1 P. Collins 3 J. McKenna 16 E. Colombo 3 J. Roe (CCD) 4 L. Cook (CCD) 3 D. Ruokonen 5 S. Cook 13 E. Salazar 4 S. Cook (CCD) 22 G. Samolyk 443 R. Crumrine 2 G. Samolyk (CCD) 14 M. Csukas 7 G. Sarty (PEP) 1 S. Dvorak (CCD) 1 R. Schmude 26 A. Filho 1 N. Simmons 1 S. Foglia 6 W. Sizensky 1 O. Gabzo 1 D. Slauson 1 P. Goodwin 3 C. Stephan 74 D. Grubb 2 K. Tikkanen 12 P. Guilbault 1 G. Wedemayer 9 E. Halbach 6 D. Weier 1 G. Hanson 4 D. Williams 54 R. Hays 29 D. Williams (PEP) 2 M. Heifner 1 R. Williams (CCD) 3 C. Hesseltine 2 C. Hesseltine (CCD) 1 46 Observers 1050 Observations This table lists the observers and the number of minima contributed by each. CCD stands for Charge-Coupled Device; PEP stands for Photoelectric Photometry (V). ----------------------------------------------------------------------------- RT AND JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 50304.760 14569 -0.003 11 G. Samolyk 50309.793 14577 -0.002 17 M. Baldwin 50357.587 14653 -0.006 13 M. Baldwin 50357.602 14653 0.009 14 G. Samolyk 50391.567 14707 0.012 13 G. Samolyk 50474.576 14839 0.002 16 G. Samolyk 50692.804 15186 -0.009 13 G. Samolyk 50713.559 : 15219 -0.008 8 C. Stephan 50713.570 15219 0.003 11 R. Berg 50726.774 15240 -0.001 16 G. Samolyk 50779.597 15324 -0.008 15 G. Samolyk 50813.554 15378 -0.013 15 C. Stephan 50825.514 15397 -0.003 20 G. Chaple 51055.703 15763 -0.002 15 M. Baldwin 51067.656 15782 0.001 13 R. Berg 51084.630 15809 -0.006 14 G. Samolyk 51101.614 15836 -0.003 10 M. Baldwin 51106.658 15844 0.010 15 R. Berg 51125.512 : 15874 -0.004 10 C. Stephan 51130.543 15882 -0.005 13 G. Samolyk 51135.568 15890 -0.011 15 M. Baldwin 51138.719 15895 -0.005 12 M. Baldwin 51145.642 15906 0.000 12 R. Berg 51157.590 15925 -0.002 11 M. Baldwin 51160.736 15930 0.000 13 G. Samolyk 51162.627 15933 0.004 11 M. Baldwin 51169.537 15944 -0.004 11 C. Stephan WZ AND JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 48894.617 11532 0.004 15 M. Baldwin 49207.660 11982 0.001 8 M. Baldwin 49333.595 12163 0.022 19 G. Samolyk 49637.582 12600 0.006 16 G. Samolyk 49680.709 12662 0.002 10 M. Baldwin 49954.795 13056 -0.001 17 M. Baldwin 49989.583 13106 0.004 15 G. Samolyk 50062.580 13211 -0.043 19 P. Goodwin 50110.631 13280 0.008 14 M. Baldwin 50290.805 13539 0.007 16 M. Baldwin 50357.589 13635 0.008 15 M. Baldwin 50373.586 13658 0.004 8 M. Baldwin 50428.550 13737 0.012 15 C. Stephan 50743.701 14190 0.030 11 R. Berg 50748.544 14197 0.003 11 C. Stephan 50755.516 14207 0.018 10 C. Stephan 50780.552 14243 0.011 25 G. Chaple 50812.554 14289 0.013 11 C. Stephan 51056.724 14640 0.007 15 R. Berg 51100.566 14703 0.022 14 C. Stephan 51109.6011 1) 14716 0.0139 62 G. Samolyk (CCD) 51132.542 14749 -0.002 8 R. Berg 1) Reduction by Samolyk, standard error +/- .0006 AB AND JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 50304.764 42770.5 -0.008 12 G. Samolyk 50320.704 42818.5 0.001 14 G. Samolyk 50341.764 42882 -0.014 10 D. Williams 50344.596 42890.5 -0.004 13 G. Samolyk 50387.569 43020 -0.011 15 G. Samolyk 50390.559 43029 -0.008 16 C. Stephan 50425.563 43134.5 -0.018 15 G. Samolyk 50455.606 43225 -0.011 15 G. Samolyk 50478.502 43294 -0.016 15 G. Chaple 50658.723 43837 -0.012 14 R. Berg 50669.672 43870 -0.016 16 G. Samolyk 50683.626 43912 -0.001 14 G. Samolyk 50692.751 43939.5 -0.003 16 G. Samolyk 50716.633 44011.5 -0.018 15 G. Samolyk 50726.606 44041.5 -0.001 14 G. Samolyk 50734.563 44065.5 -0.010 15 G. Chaple 50743.684 : 44093 -0.016 10 R. Berg 50770.569 44174 -0.014 17 G. Samolyk 50770.570 44174 -0.013 9 R. Berg 50771.565 44177 -0.014 11 R. Berg 50772.556 44180 -0.018 12 R. Berg 50779.707 : 44201.5 -0.003 10 G. Samolyk 50799.606 44261.5 -0.018 17 G. Samolyk 51006.715 44885.5 -0.009 17 G. Samolyk 51012.852 44904 -0.012 11 G. Samolyk 51041.729 44991 -0.010 13 G. Samolyk 51048.698 45012 -0.011 10 D. Williams 51051.684 45021 -0.012 15 R. Berg 51054.675 45030 -0.008 16 G. Samolyk 51056.663 45036 -0.011 16 R. Berg 51058.657 45042 -0.009 16 R. Berg 51066.618 45066 -0.013 17 R. Berg 51067.619 45069 -0.008 15 R. Berg 51069.770 45075.5 -0.014 19 G. Samolyk 51074.586 45090 -0.010 14 R. Berg 51097.652 45159.5 -0.011 19 G. Samolyk 51106.782 45187 -0.008 14 R. Berg 51109.602 45195.5 -0.009 18 G. Samolyk 51120.715 45229 -0.014 11 R. Berg 51129.521 45255.5 -0.003 13 G. Samolyk 51143.614 45298 -0.016 9 R. Berg 51144.612 45301 -0.014 8 R. Berg 51145.611 45304 -0.010 12 R. Berg 51149.585 45316 -0.019 9 R. Berg 51156.561 45337 -0.013 16 G. Samolyk 51158.560 45343 -0.005 19 C. Stephan OO AQL JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 50284.818 : 23030.5 0.004 11 G. Samolyk 50289.637 23040 0.008 17 C. Stephan 50328.651 23117 0.000 14 R. Hays 50344.619 23148.5 0.004 15 G. Samolyk 50395.554 23249 0.006 13 C. Stephan 50614.751 23681.5 0.017 16 G. Samolyk 50664.656 23780 0.004 14 S. Cook (CCD) 50665.670 23782 0.004 15 R. Hays 50669.727 23790 0.007 16 G. Samolyk 50679.609 23809.5 0.006 18 G. Chaple 50683.662 23817.5 0.005 13 G. Samolyk 50697.599 23845 0.005 19 G. Chaple 50697.605 23845 0.011 13 C. Stephan 50698.609 23847 0.002 15 R. Hays 50713.559 23876.5 0.002 19 G. Chaple 50716.609 23882.5 0.011 17 G. Samolyk 50733.583 23916 0.008 16 D. Williams 50736.620 23922 0.004 15 R. Hays 50768.559 23985 0.015 15 C. Stephan 50971.764 24386 -0.002 16 R. Hays 51004.722 : 24451 0.015 12 R. Berg 51005.731 24453 0.010 16 R. Berg 51006.747 24455 0.013 20 G. Samolyk 51012.835 : 24467 0.019 11 G. Samolyk 51035.621 24512 0.000 14 R. Hays 51041.721 24524 0.018 15 G. Samolyk 51068.572 24577 0.009 17 G. Chaple 51074.657 24589 0.013 12 R. Berg 51076.687 24593 0.016 13 G. Samolyk 51088.593 24616.5 0.012 17 G. Samolyk 51097.712 24634.5 0.009 13 G. Samolyk 51104.553 24648 0.008 12 C. Stephan 51106.586 24652 0.014 14 R. Berg 51109.614 24658 0.001 18 G. Samolyk 51109.620 24658 0.007 11 R. Berg 51110.633 24660 0.007 19 R. Berg 51141.550 24721 0.010 15 G. Samolyk TT AUR JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 43045.784 16360 -0.017 17 G. Samolyk 43045.802 16360 0.001 12 G. Wedemayer 43165.732 16450 -0.015 8 C. Hesseltine 44635.742 17553 -0.012 22 G. Samolyk 45352.754 18091 -0.011 16 G. Samolyk 45364.742 18100 -0.018 24 P. Goodwin 46437.590 18905 -0.022 14 G. Samolyk 46441.608 18908 -0.002 14 D. Williams 47859.621 19972 -0.019 17 G. Samolyk 49333.635 21078 -0.010 22 G. Samolyk 50030.655 21601 -0.010 10 S. Cook (CCD) 50062.638 21625 -0.013 20 G. Samolyk 50146.599 21688 -0.014 12 S. Cook (CCD) 50178.581 : 21712 -0.018 12 S. Cook (CCD) 50779.642 22163 -0.020 22 G. Samolyk 51160.816 22449 -0.008 15 G. Samolyk TY BOO JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 48869.627 45370.5 0.052 14 G. Samolyk 49164.743 46301 0.062 11 G. Samolyk 49480.796 47297.5 0.078 13 G. Samolyk 49624.594 47751 0.049 12 G. Samolyk 49858.831 48489.5 0.073 14 G. Samolyk 49899.744 48618.5 0.074 17 G. Samolyk 50233.696 49671.5 0.069 15 G. Samolyk 50249.706 49722 0.063 11 G. Samolyk 50488.843 50476 0.071 13 G. Samolyk 50572.736 50740.5 0.078 16 G. Samolyk 50921.750 51841 0.071 15 G. Samolyk 51027.674 52175 0.068 14 G. Samolyk 51051.6276 2) 52250.5 0.0767 56 G. Samolyk (CCD) 51256.663 52897 0.076 11 G. Samolyk 51325.644 53114.5 0.077 13 G. Samolyk 2) Reduction by Samolyk, standard error +/- .0002 TZ BOO JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 43275.768 : 12259 0.017 14 G. Samolyk 43301.759 12346.5 0.007 11 G. Wedemayer 43301.760 12346.5 0.008 14 G. Samolyk 43320.751 : 12410.5 -0.020 7 D. Ruokonen 43351.684 12514.5 0.008 8 G. Samolyk 43587.779 13309 0.008 11 G. Samolyk 43646.762 13507.5 0.004 11 G. Samolyk 43980.766 : 14631.5 -0.002 10 G. Samolyk 43986.720 14651.5 0.009 13 G. Samolyk 44382.685 15984 0.006 13 G. Hanson 44406.753 16065 0.004 12 G. Hanson 49480.6939 3) 33139.5 0.0520 48 G. Lubcke (CCD) 49480.8422 4) 33140 0.0517 67 G. Lubcke (CCD) 50249.7639 5) 35727.5 0.0667 35 G. Lubcke (CCD) 50250.6581 6) 35730.5 0.0695 42 D. Kaiser (CCD) 50564.7628 7) 36787.5 0.0739 127 G. Lubcke (CCD) 50606.651 : 36928.5 0.062 8 S. Cook (CCD) 51006.6470 8) 38274.5 0.0782 39 G. Lubcke (CCD) 51019.7205 9) 38318.5 0.0766 69 G. Lubcke (CCD) 51264.7307 10)39143 0.0767 55 G. Samolyk (CCD) 51275.5853 11)39179.5 0.0849 24 G. Samolyk (CCD) 51292.666 39237 0.079 72 G. Lubcke (CCD) 3) Reduction by Lubcke, standard error +/- .0004 4) Reduction by Lubcke, standard error +/- .0009 5) Reduction by Lubcke, standard error +/- .0004 6) Reduction by Kaiser, standard error +/- .0004 7) Reduction by Lubcke, standard error +/- .0001 8) Reduction by Lubcke, standard error +/- .0006 9) Reduction by Lubcke, standard error +/- .0008 10) Reduction by Samolyk, standard error +/- .0007 11) Reduction by Samolyk, standard error +/- .0009 SV CAM JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 48638.624 10191 0.033 10 R. Hill 48673.616 10250 0.034 13 S. Cook 49081.644 10938 0.030 15 G. Samolyk 49199.668 11137 0.033 16 G. Samolyk 49234.657 11196 0.031 14 S. Cook 49237.622 11201 0.030 12 G. Samolyk 49270.844 11257 0.040 18 G. Samolyk 49283.881 11279 0.030 18 G. Samolyk 49311.760 11326 0.035 15 G. Samolyk 49320.655 11341 0.034 10 S. Cook 49801.631 12152 0.030 16 G. Samolyk 49843.741 12223 0.032 18 G. Samolyk 49992.601 12474 0.031 15 G. Samolyk 50524.593 13371 0.040 20 G. Chaple 50614.733 13523 0.033 19 G. Samolyk 50779.617 13801 0.043 18 G. Samolyk 50871.547 13956 0.048 12 C. Stephan 51012.690 14194 0.040 14 G. Samolyk 51041.754 14243 0.044 13 G. Samolyk 51088.610 14322 0.047 17 G. Samolyk 51257.626 14607 0.038 17 C. Stephan 51260.590 14612 0.037 18 C. Stephan R CMA JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 50025.899 : 5050 0.038 8 R. Schmude 50065.651 12) 5085 0.033 19 R. Schmude 50107.687 5122 0.039 11 R. Schmude 50125.892 5138 0.069 15 G. Samolyk 50165.638 5173 0.057 16 G. Samolyk 50376.915 5359 0.049 21 G. Samolyk 50466.665 5438 0.060 16 C. Stephan 50474.631 5445 0.074 16 G. Samolyk 50499.606 5467 0.058 20 G. Samolyk 50516.618 5482 0.031 9 R. Schmude 50541.614 5504 0.036 10 R. Schmude 50842.666 5769 0.064 10 R. Schmude 50858.576 5783 0.071 10 R. Schmude 50867.657 5791 0.065 15 G. Samolyk 50884.685 5806 0.053 9 R. Schmude 50900.596 5820 0.061 8 R. Schmude 51144.834 6035 0.072 21 G. Samolyk 51160.739 6049 0.074 17 G. Samolyk 51193.662 6078 0.055 16 C. Stephan 51217.545 6099 0.083 9 R. Schmude 51218.667 6100 0.069 12 R. Schmude 51234.564 6114 0.063 11 R. Schmude 12) Observations combined from 50025 to 50107 RW CAP JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 43020.748 105 0.009 13 K. Krueger 43020.762 105 0.023 16 G. Samolyk 44140.246 13) 435 0.000 27 P. Atwood 44143.641 436 0.003 20 G. Samolyk 44533.764 14) 551 -0.006 22 P. Atwood 44818.700 635 -0.035 11 G. Samolyk 44852.643 645 -0.017 9 E. Halbach 44869.635 650 0.013 7 E. Halbach 45917.856 959 -0.032 16 P. Atwood 46270.649 1063 -0.053 15 G. Samolyk 47006.791 1280 -0.072 16 P. Atwood 47715.807 1489 -0.077 7 P. Atwood 47749.688 1499 -0.121 17 G. Samolyk 48855.619 1825 -0.127 15 G. Samolyk 50290.634 2248 -0.117 12 M. Baldwin 13) Observations combined from 44136 to 44143 14) Observations combined from 44516 to 44550 RZ CAS JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 49269.784 5078 0.013 25 G. Sarty (PEP) 50401.699 6025 0.030 13 N. Simmons 50571.422 6167 0.027 14 K. Tikkanen 50669.433 6249 0.028 25 K. Tikkanen 50675.409 6254 0.028 21 K. Tikkanen 50719.635 6291 0.030 16 D. Williams 50725.610 6296 0.029 15 R. Schmude 50726.806 6297 0.029 19 G. Samolyk 50731.589 6301 0.031 16 G. Samolyk 50743.540 6311 0.030 15 C. Stephan 50768.640 6332 0.030 16 C. Stephan 50841.550 : 6393 0.030 11 C. Stephan 50841.554 6393 0.034 12 D. Williams 50864.260 6412 0.030 19 K. Tikkanen 50866.649 6414 0.028 17 R. Schmude 50871.432 6418 0.030 15 K. Tikkanen 50884.578 6429 0.029 13 R. Schmude 50901.312 6443 0.029 19 K. Tikkanen 50908.485 6449 0.031 50 K. Tikkanen 51012.465 6536 0.024 18 S. Foglia 51013.667 6537 0.031 13 D. Williams 51019.644 6542 0.032 11 D. Williams 51068.649 6583 0.032 15 D. Williams 51068.649 6583 0.032 15 G. Samolyk 51079.406 6592 0.031 16 K. Tikkanen 51080.602 6593 0.032 12 D. Williams 51086.580 6598 0.034 10 D. Williams 51091.358 6602 0.031 25 K. Tikkanen 51111.687 6619 0.041 9 D. Williams 51127.215 6632 0.031 32 K. Tikkanen 51129.611 6634 0.036 17 J. McKenna 51141.561 6644 0.034 16 G. Samolyk 51160.688 6660 0.037 19 G. Samolyk 51166.660 6665 0.032 21 J. McKenna 51172.644 6670 0.040 13 G. Samolyk 51178.614 6675 0.034 27 J. McKenna 51178.615 6675 0.035 17 C. Stephan 51183.386 6679 0.025 21 S. Foglia 51201.324 6694 0.034 14 S. Foglia 51215.666 6706 0.033 16 C. Stephan 51221.640 6711 0.031 18 R. Schmude 51239.570 6726 0.032 12 R. Schmude CW CAS JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 48917.604 22848 0.012 11 G. Samolyk 49282.536 23992.5 0.004 11 G. Samolyk 49637.590 25106 0.003 14 G. Samolyk 49952.624 26094 -0.001 15 G. Samolyk 49978.596 26175.5 -0.016 17 G. Samolyk 50016.551 26294.5 -0.006 15 G. Samolyk 50313.736 27226.5 -0.002 14 G. Samolyk 50376.704 27424 -0.010 14 G. Samolyk 50488.632 27775 -0.003 14 G. Samolyk 50798.5611 15) 28747 -0.0102 52 G. Lubcke (CCD) 50813.066 16) 28792.5 -0.014 18 S. Cook (CCD) 51072.6290 17) 29606.5 -0.0060 68 G. Samolyk (CCD) 51095.589 29678.5 -0.004 15 G. Samolyk 51160.636 29882.5 -0.005 11 G. Samolyk 15) Reduction by Lubcke, standard error +/- 0.0001 16) Observations combined from 50812 to 50814 17) Reduction by Samolyk, standard error +/- 0.0002 DK CEP JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 43019.770 9564 -0.002 10 G. Wedemayer 43019.774 9564 0.002 9 D. Ruokonen 43301.740 9850 -0.001 11 G. Wedemayer 43301.740 9850 -0.001 13 G. Samolyk 43723.709 10278 0.000 14 G. Wedemayer 43798.643 10354 0.005 12 G. Samolyk 44222.592 10784 0.014 11 G. Samolyk 44419.768 10984 0.009 18 G. Samolyk 44915.686 11487 0.016 12 G. Samolyk 45193.714 11769 0.019 20 G. Samolyk 47859.622 14473 0.036 21 G. Samolyk 50376.644 17026 0.039 18 G. Samolyk 50572.838 17225 0.037 20 G. Samolyk 51069.732 17729 0.034 25 G. Samolyk 51076.641 17736 0.042 15 G. Samolyk EG CEP JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 50622.661 : 14741 0.008 9 S. Cook (CCD) 50683.653 14853 0.002 15 G. Samolyk 50707.625 14897 0.011 20 S. Cook (CCD) 50726.696 14932 0.020 19 G. Samolyk 50731.587 14941 0.010 15 G. Samolyk 50749.563 14974 0.013 15 G. Samolyk 50798.584 : 15064 0.018 7 R. Crumrine 51020.775 15472 0.004 16 G. Samolyk 51049.645 15525 0.009 11 M. Baldwin 51085.598 15591 0.017 18 R. Berg 51097.565 15613 0.002 15 G. Samolyk 51097.583 15613 0.020 10 D. Weier 51109.557 15635 0.012 12 R. Berg 51110.651 15637 0.017 18 R. Berg 51115.552 15646 0.016 11 R. Berg 51160.752 15729 0.013 14 G. Samolyk 51165.656 15738 0.015 9 M. Baldwin 51195.596 15793 0.001 17 C. Stephan RW COM JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 49801.612 44206.5 0.025 14 G. Samolyk 49843.748 44331 0.017 17 G. Samolyk 49858.814 44375.5 0.019 15 G. Samolyk 50152.811 45244 0.024 15 G. Samolyk 50183.612 45335 0.021 16 G. Samolyk 50488.783 46236.5 0.029 16 G. Samolyk 50523.824 46340 0.034 20 G. Samolyk 50572.735 46484.5 0.031 15 G. Samolyk 50578.829 46502.5 0.032 13 G. Samolyk 50898.551 : 47447 0.035 7 C. Stephan 50921.732 47515.5 0.028 14 G. Samolyk 50926.642 47530 0.030 15 G. Samolyk 50963.702 47639.5 0.024 15 G. Samolyk 51160.895 48222 0.037 14 G. Samolyk 51224.868 48411 0.032 10 R. Berg 51256.689 48505 0.034 10 R. Berg 51261.771 48520 0.038 13 R. Berg 51297.651 48626 0.036 11 R. Berg 51298.669 48629 0.039 15 R. Berg 51300.690 48635 0.029 15 R. Berg RZ COM JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 49801.612 44206.5 0.025 14 G. Samolyk 49843.748 44331 0.017 17 G. Samolyk 49858.814 44375.5 0.019 15 G. Samolyk 50152.811 45244 0.024 15 G. Samolyk 50183.612 45335 0.021 16 G. Samolyk 50488.783 46236.5 0.029 16 G. Samolyk 50523.824 46340 0.034 20 G. Samolyk 50572.735 46484.5 0.031 15 G. Samolyk 50578.829 46502.5 0.032 13 G. Samolyk 50898.551 : 47447 0.035 7 C. Stephan 50921.732 47515.5 0.028 14 G. Samolyk 50926.642 47530 0.030 15 G. Samolyk 50963.702 47639.5 0.024 15 G. Samolyk 51160.895 48222 0.037 14 G. Samolyk 51224.868 48411 0.032 10 R. Berg 51256.689 48505 0.034 10 R. Berg 51261.771 48520 0.038 13 R. Berg 51297.651 48626 0.036 11 R. Berg 51298.669 48629 0.039 15 R. Berg 51300.690 48635 0.029 15 R. Berg BR CYG JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 50948.703 7061 0.002 14 M. Baldwin 50984.679 7088 -0.001 23 S. Dvorak (CCD) 50984.683 7088 0.003 10 D. Williams 50988.683 7091 0.005 14 M. Baldwin 50992.680 7094 0.005 14 D. Williams 51004.665 7103 -0.004 13 R. Berg 51040.654 7130 0.006 13 M. Baldwin 51044.643 7133 -0.002 17 R. Hays 51044.644 : 7133 -0.001 7 S. Cook (CCD) 51048.649 7136 0.006 14 D. Williams 51056.646 7142 0.007 14 R. Berg 51076.627 7157 0.000 15 D. Williams 51076.632 7157 0.005 15 G. Samolyk 51080.618 7160 -0.007 15 R. Hays 51084.620 7163 -0.002 18 G. Samolyk 51088.618 7166 -0.002 16 R. Hays 51088.624 7166 0.004 13 R. Berg 51108.611 7181 0.002 14 M. Baldwin 51140.581 7205 -0.009 17 R. Hays 51253.857 7290 -0.002 16 M. Baldwin CG CYG JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 48922.575 15048 0.043 14 G. Samolyk 49235.613 15544 0.035 12 S. Cook 49247.595 15563 0.026 10 S. Cook 49252.640 15571 0.021 10 S. Cook 49976.580 16718 0.043 20 J. McKenna 49988.576 16737 0.047 14 G. Samolyk 49993.613 16745 0.035 16 J. McKenna 50000.558 16756 0.037 15 J. McKenna 50000.567 16756 0.046 14 G. Samolyk 50376.725 17352 0.044 13 G. Samolyk 50402.599 : 17393 0.041 8 J. McKenna 50655.683 17794 0.038 21 J. McKenna 50705.546 17873 0.041 13 G. Chaple 50770.557 17976 0.044 17 G. Samolyk 50985.777 18317 0.045 17 R. Hill 51004.710 18347 0.044 10 R. Berg 51023.644 18377 0.044 9 C. Stephan 51095.595 18491 0.045 14 G. Samolyk 51100.644 18499 0.045 7 R. Berg KR CYG JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 49926.713 24635 -0.012 11 M. Baldwin 49948.695 18) 24661 -0.004 12 S. Cook (CCD) 49953.774 : 24667 0.004 5 M. Baldwin 49958.840 24673 -0.001 13 M. Baldwin 49965.596 24681 -0.006 10 M. Baldwin 50226.761 24990 0.007 12 M. Baldwin 50308.738 25087 0.004 14 M. Baldwin 50325.634 25107 -0.003 14 S. Cook (CCD) 50336.632 25120 0.008 11 M. Baldwin 50402.554 25198 0.008 9 M. Baldwin 50542.847 25364 0.006 19 M. Baldwin 50553.843 25377 0.015 13 M. Baldwin 50668.775 25513 0.007 11 M. Baldwin 50690.740 25539 -0.002 9 M. Baldwin 50695.820 25545 0.007 18 M. Baldwin 50696.660 25546 0.002 17 M. Baldwin 51007.687 25914 0.013 14 M. Baldwin 51040.641 25953 0.006 13 M. Baldwin 51083.752 26004 0.014 12 M. Baldwin 51133.610 26063 0.008 15 M. Baldwin 18) Observations combined from 49937 to 49960 MY CYG JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 43083.580 2306 0.011 11 G. Wedemayer 43105.608 2311.5 0.011 13 G. Samolyk 43269.836 2352.5 0.026 15 D. Ruokonen 43281.842 2355.5 0.016 10 G. Samolyk 43860.563 2500 -0.012 13 G. Samolyk 44006.763 2536.5 -0.002 13 G. Samolyk 44817.809 2739 -0.006 15 G. Samolyk 45552.773 2922.5 0.006 18 G. Samolyk 46263.682 3100 -0.006 11 G. Samolyk 47010.650 3286.5 -0.005 12 G. Samolyk 47491.280 3406.5 0.002 13 G. Samolyk 47757.621 3473 -0.001 12 G. Samolyk 47799.655 3483.5 -0.022 15 G. Samolyk 50016.542 4037 -0.006 16 G. Samolyk 50963.761 4273.5 -0.014 15 G. Samolyk V346 CYG JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 43820.573 2965 -0.008 16 G. Samolyk 44053.766 3050 0.006 17 M. Heifner 44470.742 3202 0.003 16 G. Samolyk 46330.720 3880 0.036 16 P. Atwood 47002.824 4125 0.036 17 P. Atwood 48478.725 4663 0.051 19 G. Samolyk 48489.688 4667 0.041 6 M. Baldwin 48511.618 4675 0.025 7 M. Baldwin 48744.801 : 4760 0.029 7 M. Baldwin 49194.717 4924 0.046 9 M. Baldwin 49482.788 5029 0.073 8 M. Baldwin 49899.740 5181 0.046 22 G. Samolyk 50999.8057 19) 5582 0.0556 51 J. Roe (CCD) 51054.675 5602 0.059 16 C. Hesseltine 51054.680 5602 0.064 20 G. Samolyk 19) Reduction by Roe, standard error +/- 0.0029 V387 CYG JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 49266.714 33221 0.000 20 M. Baldwin 49268.640 33224 0.004 16 M. Baldwin 49637.627 33800 0.008 15 G. Samolyk 49687.598 33878 0.012 18 M. Baldwin 49712.572 33917 0.003 12 M. Baldwin 49906.678 34220 0.008 16 G. Samolyk 50006.607 34376 0.004 18 G. Samolyk 50391.608 34977 0.007 19 G. Samolyk 50425.558 35030 0.005 15 G. Samolyk 50692.687 35447 0.005 17 G. Samolyk 50726.639 35500 0.006 17 G. Samolyk 51045.659 35998 0.009 14 R. Berg 51054.627 : 36012 0.008 20 C. Stephan 51095.623 36076 0.006 18 G. Samolyk 51104.595 36090 0.010 8 C. Stephan TY DEL JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 48893.681 4982 0.042 20 M. Baldwin 49199.801 5239 0.042 12 D. Williams 49223.618 5259 0.037 10 S. Cook 49254.598 5285 0.047 12 G. Samolyk 49597.634 5573 0.039 15 M. Baldwin 49634.560 5604 0.040 11 C. Stephan 49928.773 5851 0.045 13 M. Baldwin 49946.638 5866 0.043 12 S. Cook (CCD) 50033.592 5939 0.044 21 R. Hays 50301.603 : 6164 0.052 8 S. Cook (CCD) 50320.661 6180 0.052 12 D. Williams 50351.627 6206 0.049 14 R. Hays 50370.682 6222 0.045 16 R. Hays 50725.644 6520 0.052 16 R. Hays 50750.651 6541 0.045 12 R. Hays 51012.712 6761 0.058 13 G. Samolyk 51074.633 6813 0.040 12 R. Berg 51080.603 6818 0.055 15 R. Hays 51099.653 6834 0.047 17 R. Hays 51130.627 6860 0.052 17 G. Samolyk 51136.579 6865 0.048 19 M. Baldwin RZ DRA JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 48866.615 8512 0.022 14 G. Samolyk 48893.611 8561 0.025 14 M. Baldwin 48893.615 8561 0.029 14 G. Samolyk 49282.532 9267 0.029 10 G. Samolyk 49480.851 9627 0.033 12 G. Samolyk 49500.674 9663 0.025 13 G. Samolyk 49586.617 9819 0.032 12 G. Samolyk 49624.627 9888 0.031 15 G. Samolyk 49868.656 10331 0.023 14 G. Samolyk 49955.702 10489 0.031 13 G. Samolyk 49992.614 10556 0.035 14 G. Samolyk 50344.622 11195 0.034 15 G. Samolyk 50376.572 11253 0.034 13 G. Samolyk 50387.581 11273 0.025 17 G. Samolyk 50545.688 11560 0.031 9 M. Baldwin 50572.686 11609 0.037 15 G. Samolyk 50577.631 11618 0.024 12 M. Baldwin 50578.752 11620 0.043 16 G. Samolyk 50771.550 11970 0.035 15 G. Samolyk 50951.684 12297 0.033 14 M. Baldwin 51012.833 12408 0.035 14 G. Samolyk 51027.705 12435 0.034 15 M. Baldwin 51027.711 12435 0.040 16 G. Samolyk 51076.726 : 12524 0.027 10 G. Samolyk 51097.662 12562 0.030 13 G. Samolyk 51319.664 12965 0.030 16 M. Baldwin S EQU JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 43723.789 328 0.006 16 G. Wedemayer 44448.805 539 0.005 16 E. Halbach 44472.853 546 0.001 11 E. Halbach 44479.730 548 0.005 12 E. Halbach 45173.825 750 0.009 15 G. Samolyk 45905.726 963 0.021 10 D. Williams 45929.775 970 0.018 17 S. Cook 45960.699 979 0.017 20 D. Williams 47087.741 1307 0.019 15 R. Hill 48922.639 1841 0.041 16 G. Samolyk 49214.711 1926 0.045 15 S. Cook 50262.727 2231 0.051 16 S. Cook (CCD) 50341.764 2254 0.058 11 D. Williams 50719.736 2364 0.059 17 D. Williams 50726.605 2366 0.056 18 D. Williams 51097.715 2474 0.068 17 R. Hill YY ERI JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 50814.671 28719 0.057 16 G. Samolyk 50824.656 28750 0.075 16 G. Samolyk 50830.610 28768.5 0.082 16 C. Stephan 50866.588 28880.5 0.052 13 R. Schmude 50867.566 28883.5 0.066 16 G. Samolyk 50871.591 28896 0.072 16 C. Stephan 50872.558 28899 0.075 17 C. Stephan 51144.864 29746 0.075 15 G. Samolyk 51156.601 29782.5 0.077 15 G. Samolyk 51169.625 29823 0.081 20 C. Stephan 51172.667 29832.5 0.069 13 G. Samolyk 51187.622 29879 0.074 18 C. Stephan 51195.644 : 29904 0.059 9 C. Stephan 51201.611 29922.5 0.078 18 C. Stephan 51215.586 29966 0.068 14 C. Stephan 51223.634 29991 0.079 16 G. Samolyk 51224.585 29994 0.065 18 C. Stephan 51224.605 29994 0.085 20 G. Samolyk 51229.573 30009.5 0.070 20 C. Stephan RX HER JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 42950.769 5499 0.001 16 G. Samolyk 43304.716 5698 0.012 14 G. Samolyk 43665.751 5901 -0.003 16 G. Samolyk 44019.691 6100 0.001 13 G. Samolyk 44485.659 6362 -0.017 12 G. Samolyk 44700.894 6483 0.011 14 G. Samolyk 44766.698 6520 0.008 13 G. Samolyk 46203.794 7328 0.017 13 D. Williams 46267.806 7364 0.001 11 P. Atwood 46678.659 7595 0.004 15 G. Samolyk 47411.426 8007 -0.001 16 G. Samolyk 47681.772 8159 0.002 18 G. Samolyk 48501.694 8620 0.002 16 G. Samolyk 48773.820 8773 0.006 14 G. Samolyk 49906.765 9410 0.001 21 G. Samolyk SZ HER JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 50605.663 10685 -0.022 14 S. Cook (CCD) 50611.398 10692 -0.014 10 M. Csukas 50623.668 10707 -0.015 18 D. Grubb 50628.564 10713 -0.028 22 E. Salazar 50632.660 10718 -0.023 24 E. Salazar 50637.572 10724 -0.019 23 E. Salazar 50641.661 10729 -0.021 25 R. Williams (CCD) 50641.661 10729 -0.021 32 D. Grubb 50654.752 10745 -0.019 22 R. Berg 50655.573 10746 -0.016 19 E. Salazar 50668.662 10762 -0.017 15 D. Slauson 50713.654 10817 -0.020 14 R. Berg 50928.811 11080 -0.023 17 M. Baldwin 50951.719 11108 -0.022 17 M. Baldwin 50960.718 11119 -0.022 12 R. Hill 50973.8094 20) 11135 -0.0201 60 J. Roe (CCD) 50978.716 11141 -0.022 15 R. Hill 50978.717 11141 -0.021 16 R. Hays 50991.801 11157 -0.027 19 R. Hill 51005.714 11174 -0.021 18 R. Berg 51014.716 11185 -0.018 18 R. Hays 51023.7136 11196 -0.0199 39 R. Williams (CCD) 51046.620 11224 -0.020 9 M. Baldwin 51055.621 11235 -0.018 16 D. Williams 51109.613 11301 -0.021 20 G. Samolyk 51109.615 11301 -0.019 13 M. Baldwin 51333.7703 11575 -0.0225 50 R. Williams (CCD) 20) Reduction by Roe, standard error +/- .0001 SW LAC JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 50320.730 15731.5 -0.039 17 G. Samolyk 50344.631 15806 -0.031 15 G. Samolyk 50370.601 15887 -0.040 15 G. Samolyk 50387.603 15940 -0.036 16 G. Samolyk 50391.611 15952.5 -0.037 17 G. Samolyk 50455.588 16152 -0.044 15 G. Samolyk 50669.677 16819.5 -0.036 16 G. Samolyk 50683.632 16863 -0.032 14 G. Samolyk 50692.753 16891.5 -0.052 17 G. Samolyk 50697.573 16906.5 -0.043 15 W. Sizensky 50697.587 16906.5 -0.029 14 C. Stephan 50710.559 16947 -0.046 13 G. Chaple 50716.651 16966 -0.047 19 G. Samolyk 50726.603 16997 -0.038 14 G. Samolyk 50770.541 17134 -0.039 15 G. Samolyk 50779.670 17162.5 -0.050 12 G. Samolyk 50799.562 17224.5 -0.043 17 G. Samolyk 51006.743 17870.5 -0.048 21 G. Samolyk 51012.833 17889.5 -0.051 12 G. Samolyk 51054.683 18020 -0.055 17 G. Samolyk 51058.702 18032.5 -0.045 13 R. Berg 51067.681 18060.5 -0.047 10 R. Berg 51069.759 18067 -0.053 18 G. Samolyk 51076.659 18088.5 -0.049 16 D. Williams 51095.591 18147.5 -0.039 16 G. Samolyk 51097.664 18154 -0.051 18 G. Samolyk 51104.556 18175.5 -0.054 12 C. Stephan 51138.546 18281.5 -0.061 14 C. Stephan 51156.519 18337.5 -0.048 13 G. Samolyk 51174.632 18394 -0.056 15 G. Samolyk VX LAC JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 48866.631 3358 0.013 16 G. Samolyk 49213.692 3681 0.013 18 M. Baldwin 49241.628 3707 0.012 11 M. Baldwin 49241.629 3707 0.013 15 G. Samolyk 49271.714 3735 0.012 15 M. Baldwin 49688.620 4123 0.014 11 M. Baldwin 49920.710 4339 0.014 12 M. Baldwin 49963.691 4379 0.015 15 D. Williams 49978.734 4393 0.015 14 M. Baldwin 50340.841 4730 0.017 17 M. Baldwin 50369.855 4757 0.020 11 M. Baldwin 50438.622 4821 0.019 16 M. Baldwin 50684.689 5050 0.027 11 D. Williams 50741.631 5103 0.021 14 M. Baldwin 51045.713 5386 0.021 15 M. Baldwin 51045.714 5386 0.022 16 R. Berg 51046.788 5387 0.022 17 M. Baldwin 51101.589 5438 0.024 12 M. Baldwin 51115.558 5451 0.024 11 R. Berg 51130.607 5465 0.030 17 G. Samolyk 51144.566 5478 0.021 18 C. Stephan 51144.572 5478 0.027 15 R. Berg 51145.645 5479 0.025 13 R. Berg Y LEO JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 48307.875 1703 -0.008 20 R. Hill 48324.739 1713 -0.005 10 R. Hill 48356.774 1732 -0.006 14 R. Hill 48690.621 1930 -0.007 19 M. Baldwin 48695.679 1933 -0.007 13 R. Hill 48695.682 1933 -0.004 9 S. Cook 48732.774 1955 -0.006 16 R. Hill 49054.816 2146 -0.010 14 R. Hill 49442.621 2376 -0.008 15 G. Samolyk 49457.796 2385 -0.008 16 M. Baldwin 49474.657 2395 -0.008 18 M. Baldwin 49688.793 2522 -0.007 18 M. Baldwin 50123.814 2780 -0.001 17 R. Hill 50511.623 3010 0.005 15 S. Cook (CCD) 50526.794 3019 0.001 24 R. Hill 50553.775 3035 0.004 20 M. Baldwin 50575.694 3048 0.004 19 M. Baldwin 50897.746 3239 0.011 21 R. Hill 51160.777 3395 0.010 20 G. Samolyk 51224.855 3433 0.016 12 R. Berg UU LEO JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 43144.921 -1341 -0.002 7 G. Samolyk 43144.925 -1341 0.002 9 G. Wedemayer 43549.753 -1100 0.012 8 G. Samolyk 43979.753 -844 -0.002 13 G. Samolyk 44614.706 -466 0.009 12 G. Samolyk 45034.640 -216 0.008 13 G. Samolyk 46470.822 639 0.012 13 P. Atwood 46875.659 880 0.031 18 G. Samolyk 47614.744 1320 0.030 14 R. Hill 47992.687 1545 0.031 10 R. Hill 49418.799 2394 0.043 15 R. Hill 49445.680 2410 0.048 8 R. Hill 50488.824 3031 0.073 25 G. Samolyk 50520.740 3050 0.074 17 R. Hill 50525.773 3053 0.068 20 R. Hill SS LIB JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 43286.771 1482 -0.002 20 G. Samolyk 43982.781 1966 0.016 22 G. Samolyk 45082.860 2731 0.027 18 H. Carney 45131.732 2765 0.007 8 D. Williams 45131.748 2765 0.023 15 G. Samolyk 45492.689 3016 0.026 11 G. Samolyk 46169.945 3487 -0.015 12 P. Atwood 46208.781 3514 -0.005 12 S. Cook 46247.652 3541 0.040 11 G. Samolyk 46566.844 3763 -0.004 10 P. Atwood 46940.719 4023 -0.008 8 P. Atwood 47344.831 4304 0.026 16 P. Atwood 48762.670 5290 -0.001 14 G. Samolyk 49875.702 6064 0.020 10 S. Cook (CCD) EW LYR JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 48896.624 11493 0.254 13 M. Baldwin 48898.569 11494 0.250 9 M. Baldwin 49155.802 11626 0.251 18 M. Baldwin 49194.780 11646 0.255 14 M. Baldwin 49235.698 11667 0.250 21 M. Baldwin 49235.701 11667 0.253 12 D. Williams 49278.573 11689 0.253 15 G. Samolyk 49878.775 11997 0.248 11 R. Hill 49952.823 12035 0.245 14 M. Baldwin 49954.768 12036 0.241 19 M. Baldwin 49958.670 12038 0.246 18 M. Baldwin 49960.625 12039 0.252 11 M. Baldwin 50338.671 12233 0.246 13 M. Baldwin 50340.619 12234 0.245 12 M. Baldwin 50981.751 12563 0.247 20 R. Hill 50983.693 12564 0.240 18 R. Hill 51020.726 12583 0.247 13 G. Samolyk 51141.544 12645 0.245 15 G. Samolyk BETA LYR JD(min) OBSERVING HEL. CYCLE O-C N OBSERVER INTERVAL 2400000 + JD 50297.53 101 0.27 35 D. Williams 50194 to 50388 50304.09 101.5 0.36 35 D. Williams 50194 to 50388 50517.56 118 0.35 40 M. Csukas 50277 to 50751 50523.71 118.5 0.04 40 M. Csukas 50277 to 50751 50543.37 120 0.29 31 J. McKenna 50396 to 50691 50556.21 121 0.19 43 E. Colombo 50326 to 50776 50562.94 121.5 0.45 43 E. Colombo 50326 to 50776 50594.94 124 0.11 59 E. Anderson 50419 to 50780 50594.95 124 0.12 73 R. Schmude 50418 to 50783 50595.42 124 0.59 51 G. Chaple 50419 to 50781 50601.58 124.5 0.28 51 G. Chaple 50419 to 50781 50608.11 125 0.34 17 A. Filho 50548 to 50658 50633.95 127 0.30 31 G. Samolyk 50572 to 50689 50640.39 127.5 0.28 31 G. Samolyk 50572 to 50689 50646.89 128 0.31 22 S. Laskowski 50578 to 50712 50685.64 131 0.24 92 K. Tikkanen 50284 to 51091 50691.89 131.5 0.02 92 K. Tikkanen 50284 to 51091 50905.77 148 0.43 27 J. McKenna 50748 to 51058 50944.45 151 0.30 65 R. Schmude 50784 to 51117 50944.46 151 0.31 48 E. Anderson 50783 to 51098 50951.04 151.5 0.42 47 E. Anderson 50783 to 51098 50970.25 153 0.22 32 E. Colombo 50797 to 51139 50970.34 153 0.31 54 G. Chaple 50784 to 51145 50976.96 153.5 0.46 53 G. Chaple 50784 to 51145 50983.30 154 0.33 74 G. Samolyk 50908 to 51054 51022.07 157 0.29 47 S. Laskowski 50960 to 51079 V1010 OPH JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 47316.701 12668 -0.014 10 G. Samolyk 47351.090 22) 12720 -0.019 68 G. Samolyk 47351.422 23) 12720.5 -0.018 68 G. Samolyk 47681.798 13220 -0.024 13 G. Samolyk 47740.659 13309 -0.030 12 G. Samolyk 48724.855 14797 -0.036 13 G. Samolyk 48773.808 14871 -0.029 13 G. Samolyk 49127.660 24) 15406 -0.040 85 O. Gabzo 49164.708 15462 -0.032 14 G. Samolyk 49211.661 : 15533 -0.040 12 G. Samolyk 49215.629 15539 -0.041 13 G. Samolyk 49500.691 15970 -0.053 12 G. Samolyk 50240.152 25) 17088 -0.067 22 S. Cook (CCD) 50305.647 17187 -0.053 15 D. Williams 50578.821 17600 -0.048 17 G. Samolyk 50963.762 18182 -0.057 18 G. Samolyk 51012.716 18256 -0.048 15 G. Samolyk 22) Observations combined from 47300 to 47402 23) Observations combined from 47300 to 47402 24) Observations combined from 49036 to 49220 25) Observations combined from 50227 to 50254 ER ORI JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 49768.600 19230.5 0.016 12 M. Baldwin 50097.588 20007.5 0.024 13 C. Stephan 50102.643 20019.5 -0.002 12 C. Stephan 50127.645 20078.5 0.019 14 C. Stephan 50376.822 20667 0.026 18 G. Samolyk 50395.660 20711.5 0.023 12 C. Stephan 50426.571 20784.5 0.026 11 C. Stephan 50455.562 20853 0.014 16 G. Samolyk 50474.406 20897.5 0.017 12 M. Csukas 50474.602 20898 0.001 19 G. Samolyk 50481.609 20914.5 0.022 12 C. Stephan 50488.591 20931 0.018 15 G. Samolyk 50492.611 20940.5 0.016 18 G. Samolyk 50499.599 20957 0.017 20 G. Samolyk 50503.619 20966.5 0.015 18 G. Samolyk 50514.623 20992.5 0.011 14 G. Samolyk 50814.614 21701 0.024 16 G. Samolyk 50824.561 21724.5 0.021 14 C. Stephan 50854.607 : 21795.5 0.006 10 G. Samolyk 50871.556 21835.5 0.019 14 C. Stephan 51158.616 22513.5 0.014 13 C. Stephan 51168.783 22537.5 0.020 19 J. Roe (CCD) 51187.628 22582 0.024 14 C. Stephan 51195.672 22601 0.023 8 C. Stephan 51201.593 22615 0.016 16 C. Stephan 51215.572 22648 0.023 12 C. Stephan 51223.614 22667 0.021 14 G. Samolyk 51229.534 22681 0.013 10 C. Stephan 51245.629 22719 0.019 18 G. Samolyk 51245.632 22719 0.022 13 C. Stephan 51256.640 22745 0.022 11 G. Samolyk 51258.319 22749 0.007 13 S. Foglia GU ORI JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 46413.871 7104.5 0.015 18 G. Samolyk 46756.763 7833 0.016 14 G. Samolyk 47894.629 10250.5 0.010 16 G. Samolyk 48251.645 11009 0.015 21 G. Samolyk 48335.662 11187.5 0.015 19 G. Samolyk 48705.627 11973.5 0.025 16 G. Samolyk 49270.903 13174.5 0.013 16 G. Samolyk 49333.742 13308 0.016 15 G. Samolyk 49777.584 14251 0.006 12 G. Samolyk 50044.704 14818.5 0.015 17 G. Samolyk 50455.598 15691.5 0.004 15 G. Samolyk 51144.1871 26)17154.5 -0.0131 26 G. Samolyk (CCD) 51144.8938 27)17156 -0.0124 81 G. Samolyk (CCD) 51245.613 17370 -0.019 19 G. Samolyk 26) Observations combined from 51143 to 51144, Reduction by Samolyk, standard error +/- 0.0005 27) Reduction by Samolyk, standard error +/- 0.0001 BB PEG JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 49983.623 17204 0.007 11 G. Samolyk 49989.600 17220.5 0.020 12 G. Samolyk 50002.597 17256.5 0.003 13 G. Samolyk 50357.610 18238.5 0.021 12 G. Samolyk 50370.613 18274.5 0.009 12 G. Samolyk 50376.752 18291.5 0.003 11 G. Samolyk 50391.584 18332.5 0.013 15 G. Samolyk 50425.557 18426.5 0.005 14 G. Samolyk 50455.562 18509.5 0.005 13 G. Samolyk 50692.705 19165.5 0.003 15 G. Samolyk 50698.671 19182 0.004 12 G. Samolyk 50726.688 19259.5 0.005 14 G. Samolyk 50731.580 19273 0.017 14 G. Samolyk 50739.7052 28)19295.5 0.0080 26 G. Lubcke (CCD) 50769.525 29)19378 0.004 11 G. Lubcke (CCD) 50799.537 19461 0.011 14 G. Samolyk 51012.821 20051 0.009 10 G. Samolyk 51020.773 20073 0.008 12 G. Samolyk 51069.759 20208.5 0.010 13 G. Samolyk 51075.7335 30)20225 0.0201 62 G. Samolyk (CCD) 51084.590 20249.5 0.020 13 G. Samolyk 51097.607 20285.5 0.023 17 G. Samolyk 51099.579 20291 0.006 14 G. Samolyk 51129.580 20374 0.003 17 G. Samolyk 28) Reduction by Lubcke, standard error +/- .0005 29) Reduction by Lubcke, standard error +/- .002 30) Reduction by Samolyk, standard error +/- .0002 KW PER JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 43131.651 781 0.006 15 M. Baldwin 43373.773 1041 0.001 11 M. Baldwin 46071.630 3938 0.001 8 D. Williams 46071.645 3938 0.016 23 P. Goodwin 46355.664 4243 0.001 9 D. Williams 46438.545 4332 0.000 9 D. Williams 47087.633 5029 0.000 14 M. Baldwin 47479.695 5450 0.002 14 M. Baldwin 47480.625 5451 0.001 13 M. Baldwin 48213.531 6238 0.006 8 M. Baldwin 48537.610 6586 0.007 9 M. Baldwin 50040.660 8200 0.006 17 S. Cook (CCD) 50079.7720 31) 8242 0.0046 86 G. Lubcke (CCD) 50488.611 8681 0.021 13 G. Samolyk 51041.784 9275 0.026 17 G. Samolyk 31) Reduction by Lubcke, standard error +/- .0005 BETA PER JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 46719.6308 32) 376 0.0109 28 D. Williams (PEP) 46808.5200 33) 407 0.0136 12 D. Williams (PEP) 50025.648 : 1529 0.026 13 R. Schmude 50048.595 1537 0.035 16 R. Schmude 50160.424 1576 0.039 11 M. Marco 50369.724 1649 0.026 36 D. Williams 50372.593 1650 0.027 7 J. McKenna 50395.549 1658 0.045 14 C. Stephan 50415.597 1665 0.022 11 R. Schmude 50481.551 1688 0.028 15 R. Schmude 50481.553 1688 0.030 10 C. Stephan 50507.346 1697 0.017 11 S. Foglia 50868.647 1823 0.038 14 R. Schmude 50974.739 34) 1860 0.040 24 G. Samolyk 51112.360 1908 0.030 21 S. Foglia 51195.519 1937 0.037 13 C. Stephan 51215.579 1944 0.026 13 C. Stephan 51215.582 1944 0.029 14 R. Schmude 32) Previously published (26) to 3 places, Reduction by Williams to 4 places, standard error .0004 33) Reduction by Williams, standard error .0009 34) Observations combined from 50779 to 51172 RV PSC JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 43452.664 34425 0.028 10 G. Wedemayer 43755.687 34972 0.018 12 G. Samolyk 44191.654 35759 -0.006 12 G. Samolyk 44474.753 36270 0.003 12 G. Samolyk 45552.823 38216 0.006 14 G. Samolyk 46017.613 39055 -0.003 10 G. Samolyk 47161.612 41120 0.004 12 G. Samolyk 47197.614 41185 -0.004 11 G. Samolyk 48176.529 42952 0.008 8 G. Samolyk 48219.733 43030 0.001 15 G. Samolyk 48900.572 44259 -0.016 11 G. Samolyk 49988.624 46223 -0.003 16 G. Samolyk 50367.550 46907 -0.007 10 G. Samolyk 51041.768 48124 0.003 14 G. Samolyk 51224.560 48454 -0.022 13 G. Samolyk X TRI JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 50047.637 7766 -0.026 11 D. Williams 50117.585 7838 -0.029 18 R. Hays 50390.588 8119 -0.027 16 C. Stephan 50390.588 8119 -0.027 17 R. Hays 50391.559 8120 -0.028 14 G. Samolyk 50424.590 8154 -0.029 15 R. Hays 50425.562 8155 -0.029 15 G. Samolyk 50426.533 8156 -0.029 13 C. Stephan 50455.677 8186 -0.031 17 R. Hays 50460.534 8191 -0.032 23 G. Chaple 50460.535 8191 -0.031 13 R. Hays 50461.505 8192 -0.032 21 G. Chaple 50461.511 : 8192 -0.026 8 C. Stephan 50492.595 8224 -0.031 18 G. Samolyk 50692.730 8430 -0.033 17 G. Samolyk 50727.706 8466 -0.032 14 R. Hays 50731.595 8470 -0.029 14 G. Samolyk 50762.684 : 8502 -0.029 13 R. Hill 50764.629 8504 -0.027 23 P. Guilbault 50768.515 8508 -0.027 11 C. Stephan 50798.630 8539 -0.030 15 R. Hays 50798.632 8539 -0.028 10 R. Crumrine 50799.600 8540 -0.032 15 G. Samolyk 50800.571 8541 -0.032 16 D. Williams 50802.516 8543 -0.030 10 C. Stephan 50869.549 8612 -0.033 11 R. Hays 51069.686 8818 -0.032 11 D. Williams 51105.632 8855 -0.033 12 D. Williams 51138.663 8889 -0.034 10 C. Stephan 51140.605 8891 -0.035 17 R. Hays 51141.577 8892 -0.035 14 G. Samolyk 51172.666 8924 -0.035 15 R. Hays 51174.6095 35) 8926 -0.0347 27 J. Roe (CCD) 51175.580 8927 -0.036 11 C. Stephan 35) Reduction by Roe, standard error +/- .0001 TY UMA JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 49442.664 27952 0.105 16 G. Samolyk 49499.7467 36)28113 0.1065 45 G. Lubcke (CCD) 49508.781 28138.5 0.100 13 G. Samolyk 49779.657 28902.5 0.109 12 G. Samolyk 49801.634 28964.5 0.104 17 G. Samolyk 49868.650 29153.5 0.112 15 G. Samolyk 50152.816 29955 0.116 15 G. Samolyk 50183.652 30042 0.107 18 G. Samolyk 50233.656 30183 0.121 17 G. Samolyk 50284.688 30327 0.099 17 G. Samolyk 50488.757 30902.5 0.131 20 G. Samolyk 50517.641 30984 0.121 21 G. Samolyk 50523.678 31001 0.130 19 G. Samolyk 50578.802 31156.5 0.124 16 G. Samolyk 50614.767 31258 0.103 15 G. Samolyk 50921.820 32124 0.126 15 G. Samolyk 50950.716 32205.5 0.127 22 G. Samolyk 51223.730 32975.5 0.146 17 G. Samolyk 51224.622 32978 0.152 19 G. Samolyk 51325.649 33263 0.135 14 G. Samolyk 36) reduction by Lubcke, standard error +/- .0002 UX UMA JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 49754.670 62652 0.001 9 G. Samolyk 49779.651 62779 0.004 17 G. Samolyk 50152.734 64676 0.002 17 G. Samolyk 50183.615 64833 0.006 18 G. Samolyk 50249.694 65169 0.003 18 G. Samolyk 50631.630 67111 0.003 14 G. Chaple 50668.604 67299 0.003 11 G. Chaple 50670.569 67309 0.001 8 G. Chaple 50952.597 68743 0.003 15 G. Chaple 50953.579 68748 0.001 10 G. Chaple 51110.9164 37) 69548 0.0018 14 G. Samolyk (CCD) 51160.8709 38) 69802 0.0018 21 G. Samolyk (CCD) 51256.651 70289 0.003 11 G. Samolyk 51265.6968 39) 70335 0.0019 13 G. Samolyk (CCD) 51306.8009 40) 70544 0.0017 39 L. Cook (CCD) 51313.8815 41) 70580 0.0022 48 L. Cook (CCD) 51319.7815 42) 70610 0.0020 47 L. Cook (CCD) 51328.6313 43) 70655 0.0016 17 G. Samolyk (CCD) 51350.6587 44) 70767 0.0018 19 G. Samolyk (CCD) 51370.7190 45) 70869 0.0017 5 C. Hesseltine (CCD) 37) Reduction by Samolyk, standard error +/- 0.0002 38) Reduction by Samolyk, standard error +/- 0.0002 39) Reduction by Samolyk, standard error +/- 0.0002 40) Reduction by Samolyk, standard error +/- 0.0002 41) Reduction by Samolyk, standard error +/- 0.0001 42) Reduction by Samolyk, standard error +/- 0.0001 43) Reduction by Samolyk, standard error +/- 0.0003 44) Reduction by Samolyk, standard error +/- 0.0001 45) Reduction by Samolyk, standard error +/- 0.0005 VV UMA JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 48661.757 4141 -0.020 10 G. Samolyk 49064.572 4727 -0.010 11 G. Samolyk 49134.677 4829 -0.018 12 M. Baldwin 49283.828 5046 -0.028 18 G. Samolyk 49442.618 5277 -0.023 14 G. Samolyk 50130.665 : 6278 -0.043 11 S. Cook (CCD) 50152.677 6310 -0.027 12 G. Samolyk 50183.598 6355 -0.038 14 G. Samolyk 50488.793 6799 -0.040 16 G. Samolyk 50504.591 6822 -0.052 14 G. Samolyk 50524.538 6851 -0.039 14 G. Chaple 50572.643 6921 -0.050 15 G. Samolyk 50578.826 6930 -0.054 17 G. Samolyk 50871.663 7356 -0.041 13 C. Stephan 50897.773 7394 -0.051 23 R. Hill 50921.829 7429 -0.054 16 G. Samolyk 50926.641 7436 -0.053 16 G. Samolyk 50950.706 7471 -0.046 20 G. Samolyk 51212.589 : 7852 -0.055 10 R. Berg 51214.649 7855 -0.057 11 R. Berg 51223.592 7868 -0.050 12 G. Samolyk 51245.582 : 7900 -0.056 8 R. Berg 51245.590 7900 -0.049 16 G. Samolyk 51245.593 7900 -0.045 17 C. Stephan 51253.834 7912 -0.053 11 R. Berg Z VUL JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 45895.850 1201 -0.003 13 D. Williams 45900.767 1203 0.004 18 D. Williams 45905.678 1205 0.005 11 D. Williams 45932.653 1216 -0.024 14 S. Cook 45959.681 1227 -0.001 10 D. Williams 48846.676 2403 -0.008 14 D. Williams 49165.824 2533 -0.002 13 D. Williams 49212.468 2552 -0.001 28 M. Csukas 49229.658 2559 0.004 14 S. Cook 49244.388 2565 0.005 21 M. Csukas 49570.882 46) 2698 -0.008 49 P. Collins 49907.209 47) 2835 -0.007 48 P. Collins 49908.432 48) 2835.5 -0.011 47 P. Collins 49909.662 2836 -0.009 17 S. Cook (CCD) 50658.423 3141 -0.002 14 M. Csukas 51048.756 3300 -0.004 16 D. Williams 46) Observations combined from 49536 to 49607 47) Observations combined from 49776 to 50037 48) Observations combined from 49776 to 50037 AW VUL JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 43034.652 -4031 -0.007 18 G. Samolyk 43346.743 -3644 -0.013 8 D. Ruokonen 43380.630 -3602 0.003 8 G. Samolyk 43822.560 -3054 -0.002 16 G. Samolyk 44222.554 -2558 -0.008 12 G. Samolyk 44463.689 -2259 -0.002 22 G. Hanson 44792.722 -1851 -0.001 14 G. Samolyk 45167.723 -1386 0.000 15 E. Halbach 45221.752 -1319 -0.004 17 G. Samolyk 45892.724 -487 0.001 9 D. Williams 45959.659 -404 0.000 12 D. Williams 46026.594 -321 0.000 14 D. Williams 46709.660 526 0.002 16 G. Samolyk 47469.339 1468 0.003 11 G. Samolyk 49347.563 3797 0.002 15 G. Samolyk AX VUL JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 43334.769 -750 0.008 7 D. Ruokonen 43741.761 -549 0.007 14 G. Samolyk 44138.624 -353 0.002 14 G. Samolyk 44470.703 -189 0.007 13 G. Samolyk 44543.598 -153 0.008 17 G. Hanson 45936.675 535 -0.004 10 D. Williams 46264.694 697 -0.009 10 D. Williams 46999.706 1060 -0.013 8 R. Hill 47803.568 1457 -0.012 13 G. Samolyk 48066.799 1587 -0.010 12 G. Samolyk 48210.559 1658 -0.013 12 G. Samolyk 48876.727 1987 -0.017 16 R. Hill 49273.596 2183 -0.017 12 G. Samolyk 50006.583 2545 -0.021 21 G. Samolyk BO VUL JD(min) HEL. CYCLE O-C N OBSERVER 2400000 + 49927.715 7163 0.024 19 M. Baldwin 49964.688 7182 0.026 15 J. McKenna 50003.606 7202 0.026 17 J. McKenna 50285.758 7347 0.027 11 M. Baldwin 50320.783 7365 0.027 18 G. Samolyk 50320.785 7365 0.029 14 D. Williams 50326.617 7368 0.023 12 M. Baldwin 50363.591 7387 0.026 8 M. Baldwin 50573.745 7495 0.026 15 M. Baldwin 50649.633 7534 0.025 26 J. McKenna 50684.658 7552 0.024 15 J. McKenna 50719.682 7570 0.023 10 M. Baldwin 50723.575 7572 0.024 9 M. Baldwin 51040.746 7735 0.018 20 M. Baldwin 51044.6383 49) 7737 0.0188 53 G. Samolyk (CCD) 51079.664 7755 0.019 11 M. Baldwin 49) Reduction by Samolyk, standard error +/- 0.0002 ====================================================================== END OF OBSERVED MINIMA TIMINGS OF ECLIPSING BINARIES NUMBER 5 ======================================================================