From eowaagen@aavso.org Thu Oct  6 21:07:10 2005
Date: Thu, 06 Oct 2005 17:11:59 -0400
From: Elizabeth O. Waagen <eowaagen@aavso.org>
To: eowaagen
Subject: eb mono 10

PAGE i

                            OBSERVED MINIMA TIMINGS
                             OF ECLIPSING BINARIES


                                   NUMBER 10










                                  Prepared by:

                               Marvin E. Baldwin
                                Chairman, AAVSO
                                Eclipsing Binary
                                   Committee



                                Gerard Samolyk
                                AAVSO Eclipsing
                               Binary Committee



                                October 2005

------------------------------------------------------------------------
PAGE ii


                     Funds for publication were provided by
                           The Harold S. Martin Fund.













                              ISBN 1-878174-69-X

                                COPYRIGHT 2005
               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


Errata to Earlier Numbers.................................vi


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 660 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 9.
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.

Most 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.

With the exception of V1315 Aql, DV Cep, and EF Ori, the linear elements in
the 1985 General Catalogue of Variable Stars (Kohlopov et al. 1985) (GCVS)
were used to compute the O-C values.

In the case of V1315 Aql, no period has been established in the 1985 GCVS.
Lewis Cook observed this star intensely for two months to obtain the times of
minima listed in this document. The following light elements have been
calculated for this star by applying a linear regression to these observed
times of minima.

           JDmin = 2453199.9643 + 0.1396907 E

No linear elements for DV Cep are listed in the 1985 GCVS. For this
publication the linear elements by Frank and Lichtenknecker (1987) are used.

It has been determined that the period listed in the 1985 GCVS for EF Ori
(3.7012d) is not valid. The light elements used in this publication were
calculated using the observed times of primary minima listed in this
publication.

           JDmin = 2452350.592 + 1.6194474 E

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.

------------------------------------------------------------------------
PAGE vi

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://ftp.aavso.org/monographs/eb/).

Observers contributing data used in this publication are listed in Table 3.
Their dedicated efforts are greatly appreciated.

      Marvin E. Baldwin                                Gerard Samolyk
      8655 N Co. Rd. 775E                              9504 W Barnard Ave.
      Butlerville, IN 47223                            Greenfield, WI 53228
      USA                                              USA





ERRATA

In Observed Minima Timings of Eclipsing Binaries, Number 8, page ii:
      IBVS number should read  1-878174-67-3

In Observed Minima Timings of Eclipsing Binaries, Number 9, page ii:
      IBVS number should read  1-878174-68-1


------------------------------------------------------------------------
PAGE vii

                              REFERENCES


  1      Ashbrook, J. 1964, Sky & Telescope, 27, 5, 317.
  2      Ashbrook, J. 1965, Sky & Telescope, 29, 4, 254.
  3      Robinson, L. J. 1965, Inf. Bull. Var. Stars, No. 111.
  4      Robinson, L. J. 1965, Inf. Bull. Var. Stars, No. 114.
  5      Robinson, L. J. 1965, Inf. Bull. Var. Stars, No. 119.
  6      Robinson, L. J. 1966, Inf. Bull. Var. Stars, No. 129.
  7      Robinson, L. J. 1966, Inf. Bull. Var. Stars, No. 154.
  8      Robinson, L. J. 1967, Inf. Bull. Var. Stars, No. 180.
  9      Robinson, L. J. 1967, Inf. Bull. Var. Stars, No. 221.
10      Robinson, L. J., and Ashbrook, J. 1968, Inf. Bull. Var. Stars, No. 247.
11      Baldwin, M. E. 1973, Inf. Bull. Var. Stars, No. 795.
12      Baldwin, M. E. 1974, J. Amer. Assoc. Var. Star Obs., 3, 60.
13      Baldwin, M. E. 1975, J. Amer. Assoc. Var. Star Obs., 4, 86.
14      Baldwin, M. E. 1976, J. Amer. Assoc. Var. Star Obs., 5, 29.
15      Baldwin, M. E. 1976, J. Amer. Assoc. Var. Star Obs., 5, 84.
16      Baldwin, M. E. 1977, J. Amer. Assoc. Var. Star Obs., 6, 24.
17      Baldwin, M. E. 1978, J. Amer. Assoc. Var. Star Obs., 7, 28.
18      Samolyk, G. 1992, J. Amer. Assoc. Var. Star Obs., 21, 34.
19      Samolyk, G. 1992, J. Amer. Assoc. Var. Star Obs., 21, 111.
20      Baldwin, M. E., and Samolyk, G. 1993, Observed Minima Timings of
           Eclipsing Binaries No. 1, AAVSO, Cambridge, MA.
21      Baldwin, M. E., and Samolyk, G. 1995, Observed Minima Timings of
           Eclipsing Binaries No. 2, AAVSO, Cambridge, MA.
22      Baldwin, M. E., and Samolyk, G. 1996, Observed Minima Timings of
           Eclipsing Binaries No. 3, AAVSO, Cambridge, MA.
23      Baldwin, M. E., and Samolyk, G. 1997, Observed Minima Timings of
           Eclipsing Binaries No. 4, AAVSO, Cambridge, MA.
24      Baldwin, M. E., and Samolyk, G. 1999, Observed Minima Timings of
           Eclipsing Binaries No. 5, AAVSO, Cambridge, MA.
25      Baldwin, M. E., and Samolyk, G. 2000, Observed Minima Timings of
           Eclipsing Binaries No. 6, AAVSO, Cambridge, MA.
26      Baldwin, M. E., and Samolyk, G. 2002, Observed Minima Timings of
           Eclipsing Binaries No. 7, AAVSO, Cambridge, MA.
27      Baldwin, M. E., and Samolyk, G. 2003, Observed Minima Timings of
           Eclipsing Binaries No. 8, AAVSO, Cambridge, MA.
28      Frank, P., and Lichtenknecker, D. 1987, BAV Mitt. #47.
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.



------------------------------------------------------------------------
PAGE viii



                                   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
AB AND              X X X X   X     X  X  X  X  X        X     X     X  X  X  X
RY AQR                        X     X  X     X  X              X
CX AQR    X   X X     X   X   X     X  X     X  X        X        X     X  X
V343 AQL                      X                             X
V1315 AQL
SS ARI                                                X           X        X
TT AUR                                       X                       X
Y CAM         X   X X X X              X  X  X  X              X
AL CAM              X         X     X  X  X  X  X           X
AM CMI
CW CAS                                             X                 X        X
IV CAS                        X                 X        X        X
V364 CAS                                                          X
U CEP       X     X   X X     X     X  X  X  X  X        X        X        X
DV CEP                                                      X
TW CET                                                                     X
RW COM                                       X           X           X     X
RZ COM                        X                             X        X     X
CC COM                                                         X        X  X
U CRB       X                       X  X  X     X           X
V CRT                                        X                 X
KV CYG
V456 CYG                                                          X
V1034 CYG
BH DRA                                          X           X
TX GEM                                          X
WW GEM
UX HER                  X X      X                             X
SW LAC      X X X X X X X X      X  X  X  X  X  X        X     X     X     X  X
AW LAC
V508 OPH
V839 OPH
EF ORI
ET ORI                                                         X
Z PER                            X              X              X
RT PER      X   X X X X X X      X  X  X  X  X  X        X        X     X
BETA PERX X     X X   X X X      X  X  X  X     X           X        X     X
RZ TAU                                                      X              X
WY TAU                                                            X
AM TAU
EQ TAU                                                   X     X        X  X
TY UMA                                                X              X     X
UX UMA                                                      X        X     X
VV UMA                           X  X  X  X  X  X        X           X     X
AF UMA
BH VIR                                                         X
BE VUL                                                            X
BS VUL                                                      X           X
BU VUL                X X X      X  X  X  X  X  X        X        X     X  X
CD 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 ix

                                   TABLE 2

                   Earliest  Earliest   Latest     Epoch         Period
                   Minimum   Listing    Listing    2400000 +     (Days)

          AB AND     1966       2002     2005    36109.57928    0.33189215
          RY AQR     1969       1991     2004    40824.414      1.966594
          CX AQR     1964       2002     2005    36453.555      0.5559862
          V343 AQL   1968       1995     2005    28443.417      1.844603
          V1315 AQL  2004       2004     2004    53199.9643     0.1396907
          SS ARI     1976       2002     2004    39028.395      0.4059936
          TT AUR     1974       2000     2004    21242.25640    1.332735
          Y CAM      1965       1996     2005    42961.92757    3.3056244
          AL CAM     1966       1996     2005    26411.523      1.32833335
          AM CMI     1976       1976     2005    25244.653      1.019186
          CW CAS     1977       2003     2005    41649.40322    0.3188449
          IV CAS     1968       1999     2005    40854.597      0.9985245
          V364 CAS   1977       1998     2005    34333.298      1.543068
          U CEP      1964       2002     2005    44541.6031     2.4930475
          DV CEP     1977       1998     2005    46763.353      1.1619748
          TW CET     1997       2002     2004    42373.378      0.3168519
          RW COM     1974       2002     2005    40022.4163     0.2373459
          RZ COM     1969       2002     2005    34837.4198     0.33850604
          CC COM     1977       2002     2005    39533.583      0.22068628
          U CRB      1965       1995     2005    16747.9718     3.45220133
          V CRT      1974       1996     2005    41397.3323     0.7020361
          KV CYG     1977       1977     2005    29468.389      2.8389936
          V456 CYG   1976       1998     2005    44911.3530     0.8911922
          V1034 CYG  1977       1977     2005    42938.459      0.976931
          BH DRA     1975       1997     2005    40019.7982     1.81723857
          TX GEM     1975       1979     2005    19848.412      2.800014
          WW GEM     1977       1977     2005    25984.257      1.237811
          UX HER     1967       1996     2005    39672.37853    1.5488479
          SW LAC     1965       2003     2005    45275.3477     0.3207209
          AW LAC     1976       1976     2005    26624.222      1.1428498
          V508 OPH   1985       1985     2005    45082.543      0.344792129
          V839 OPH   1985       1985     2005    40448.4129     0.40899532
          EF ORI     1998       1998     2005    52350.592      1.6194474
          ET ORI     1976       1996     2005    26684.283      0.9509356
          Z PER      1967       1997     2004    45659.245      3.0563066
          RT PER     1965       2001     2004    33376.0583     0.84940032
          BETA PER   1963       2002     2005    45641.5135     2.8673043
          RZ TAU     1976       2003     2005    37676.567      0.4156747
          WY TAU     1976       2000     2005    37402.258      0.6927584
          AM TAU     1976       1976     2005    45253.417      2.043926
          EQ TAU     1976       2002     2005    40213.325      0.34134848
          TY UMA     1976       2002     2005    39532.4965     0.354538609
          UX UMA     1976       2002     2005    37432.8204     0.19667128
          VV UMA     1969       2002     2005    45815.3365     0.68738
          AF UMA     1976       1976     2005    26796.4        5.257555
          BH VIR     1977       1996     2005    43230.609      0.81687161
          BE VUL     1976       1997     2005    40111.381      1.552044
          BS VUL     1976       2001     2005    43271.578      0.47597147
          BU VUL     1966       2002     2005    33533.683      0.568993
          CD VUL     1976       1998     2005    46298.505      0.683745

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
for V1315 Aql, DV Cep, and EF Ori (see the introduction).


------------------------------------------------------------------------
PAGE x


                                   TABLE 3

      P. Atwood                 9          C. Limbach (CCD)          2
      M. Baldwin               26          G. Lubcke (CCD)           8
      R. Berg                   1          B. Manske                 4
      J. Bialozynski (CCD)     11          B. Manske (CCD)           2
      S. Brady (CCD)           20          C. Norris (CCD)           2
      R. Casas (CCD)            1          R. Poklar (CCD)           5
      G. Chaple                 4          D. Ruokonen               1
      J. Coloma (CCD)           7          G. Samolyk               90
      Lew Cook (CCD)           44          G. Samolyk (CCD)        146
      S. Cook (CCD)            40          G. Sarty                  2
      M. Csukas                 1          R. Schmude                1
      S. Dvorak (CCD)          63          N. Simmons                1
      S. Foglia                 3          N. Simmons (CCD)          5
      H. Gerner (CCD)           6          M. Simonsen               1
      G. Hanson                 2          M. Spearman (CCD)         1
      R. Hays                   6          C. Stephan               53
      C. Hesseltine (CCD)      15          P. Sullivan (CCD)         1
      R. Hill                  18          J. Virtanen               1
      J. A. Howell (CCD)        6          G. Wedemayer              2
      S. Jamieson (CCD)         3          D. Weier                  1
      V. Jani                   1          D. Williams              41
      S. Kracenicki             3

                                          40 Observers     Total   660

This table lists the observers and the number of minima contributed by each.
CCD stands for Charge-Coupled Device.

------------------------------------------

AB AND
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
52585.694     49643     -0.007    16   R. Hill
52875.765     50517     -0.010    10   D. Williams
52930.688     50682.5   -0.015    17   C. Stephan
52936.6630    50700.5   -0.0143   22   R. Poklar (CCD)    0.0005
52966.698     50791     -0.015    23   C. Stephan
53001.5475    50896     -0.0146   75   S. Dvorak (CCD)    0.0001
53250.630     51646.5   -0.017    13   S. Cook (CCD)
53253.787     51656     -0.013    21   C. Stephan
53254.785     51659     -0.011    23   C. Stephan
53260.589     51676.5   -0.015    33   H. Gerner (CCD)    0.0001
53274.696     51719     -0.013    12   D. Williams
53282.667     51743     -0.008    12   C. Stephan
53284.6512    51749     -0.0150   47   S. Brady (CCD)     0.0004
53286.642     51755     -0.016    33   S. Cook (CCD)
53286.6428    51755     -0.0147   45   S. Brady (CCD)     0.0004
53292.286     51772     -0.014    16   V. Jani
53309.7087    51824.5   -0.0153   31   S. Dvorak (CCD)    0.0002
53315.6839    51842.5   -0.0142   20   S. Brady (CCD)     0.0011
53336.5929    51905.5   -0.0144   28   S. Brady (CCD)     0.0006
53553.815     52560     -0.016    10   D. Williams

----------------------------------------------------------------

RY AQR
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
48454.787      3880     -0.011     7   M. Baldwin
49961.173: 1)  4646     -0.037    15   S. Cook (CCD)
50692.752      5018     -0.031    12   G. Samolyk
50698.658      5021     -0.024    14   G. Samolyk
51048.696      5199     -0.040    10   D. Williams
51463.637      5410     -0.051    16   D. Williams
51467.566      5412     -0.055    15   D. Williams
51874.646      5619     -0.060     9   R. Hill
52525.5879     5950     -0.0604   38   G. Samolyk (CCD)   0.0005
53288.6173     6338     -0.0695   91   G. Samolyk (CCD)   0.0001
53288.624      6338     -0.063    12   D. Williams
53353.5125     6371     -0.0719   28   G. Samolyk (CCD)   0.0010

1) Observations combined from 49933 to 49988

----------------------------------------------------------------

CX AQR
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER          ERROR
2400000 +
52493.752     28850     -0.005    15   R. Hays
52494.8681    28852     -0.0007   25   S. Dvorak (CCD)    0.0001
52556.585     28963      0.002    16   C. Stephan
52561.5883    28972      0.0011   50   G. Samolyk (CCD)   0.0001
52566.590     28981     -0.001    18   C. Stephan
52581.607     29008      0.004    10   C. Stephan
52586.605     29017     -0.002    15   C. Stephan
52615.521     29069      0.003    11   R. Hays
52875.724     29537      0.005    12   D. Williams
52930.768     29636      0.006    14   C. Stephan
52939.667     29652      0.009    17   C. Stephan
53238.780     30190      0.002    14   R. Hays
53253.795     30217      0.005    20   C. Stephan
53281.5956    30267      0.0063   58   G. Samolyk (CCD)   0.0001
53282.709     30269      0.008    16   C. Stephan
53287.712     30278      0.007    15   R. Hill
53306.616     30312      0.007    22   S. Cook (CCD)
53330.5220    30355      0.0059   30   S. Dvorak (CCD)    0.0001
53341.641     30375      0.005    27   S. Cook (CCD)
53581.8283    30807      0.0064   75   G. Samolyk (CCD)   0.0001

----------------------------------------------------------------

V343 AQL
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
49960.693     11665     -0.018    10   M. Baldwin
50661.638     12045     -0.022    11   S. Cook (CCD)
51039.782     12250     -0.022    11   P. Sullivan (CCD)
51076.676     12270     -0.020    14   G. Samolyk
51445.5817    12470     -0.0347        J. A. Howell (CCD) 0.0006
52168.664     12862     -0.037    15   D. Williams
52489.6228    13036     -0.0389   25   N. Simmons (CCD)   0.0005
52511.762     13048     -0.035    10   M. Simonsen
52561.5593    13075     -0.0419   51   G. Samolyk (CCD)   0.0003
53321.5331    13487     -0.0446   50   G. Samolyk (CCD)   0.0002
53616.6706    13647     -0.0435   70   G. Samolyk (CCD)   0.0003

----------------------------------------------------------------

V1315 AQL
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
53199.9643         0      0.0000        Lew Cook (CCD)    0.0001
53200.1036         1     -0.0004        Lew Cook (CCD)    0.0001
53216.7277       120      0.0005        Lew Cook (CCD)    0.0001
53217.7053       127      0.0003        Lew Cook (CCD)    0.0001
53220.7782       149      0.0000        Lew Cook (CCD)    0.0002
53220.9178       150     -0.0001        Lew Cook (CCD)    0.0001
53221.7561       156      0.0000        Lew Cook (CCD)    0.0001
53221.8959       157      0.0002        Lew Cook (CCD)    0.0001
53222.7339       163      0.0000        Lew Cook (CCD)    0.0001
53222.8736       164      0.0000        Lew Cook (CCD)    0.0001
53224.8290       178     -0.0003        Lew Cook (CCD)    0.0001
53225.8070       185      0.0000        Lew Cook (CCD)    0.0001
53226.7849       192      0.0000        Lew Cook (CCD)    0.0001
53227.7627       199     -0.0001        Lew Cook (CCD)    0.0001
53228.7413       206      0.0007        Lew Cook (CCD)    0.0001
53228.8803       207      0.0000        Lew Cook (CCD)    0.0001
53230.6964       220      0.0002        Lew Cook (CCD)    0.0001
53230.8359       221     -0.0001        Lew Cook (CCD)    0.0001
53231.6739       227     -0.0002        Lew Cook (CCD)    0.0001
53231.8135       228     -0.0002        Lew Cook (CCD)    0.0001
53233.7697       242      0.0003        Lew Cook (CCD)    0.0001
53234.7475       249      0.0002        Lew Cook (CCD)    0.0001
53235.7249       256     -0.0002        Lew Cook (CCD)    0.0001
53236.7030       263      0.0000        Lew Cook (CCD)    0.0001
53236.8428       264      0.0001        Lew Cook (CCD)    0.0001
53237.8206       271      0.0001        Lew Cook (CCD)    0.0001
53238.7982       278     -0.0001        Lew Cook (CCD)    0.0001
53239.7761       285     -0.0001        Lew Cook (CCD)    0.0001
53241.7319       299      0.0001        Lew Cook (CCD)    0.0001
53242.7096       306     -0.0001        Lew Cook (CCD)    0.0001
53242.8495       307      0.0002        Lew Cook (CCD)    0.0001
53243.6875       313      0.0000        Lew Cook (CCD)    0.0001
53244.8051       321      0.0001        Lew Cook (CCD)    0.0001
53245.7826       328     -0.0002        Lew Cook (CCD)    0.0001
53247.7382       342     -0.0003        Lew Cook (CCD)    0.0001
53248.7162       349     -0.0001        Lew Cook (CCD)    0.0001
53249.6940       356     -0.0002        Lew Cook (CCD)    0.0001
53250.6724       363      0.0004        Lew Cook (CCD)    0.0001
53250.8115       364     -0.0002        Lew Cook (CCD)    0.0001
53251.6501       370      0.0002        Lew Cook (CCD)    0.0002
53251.7895       371      0.0000        Lew Cook (CCD)    0.0001
53252.7676       378      0.0002        Lew Cook (CCD)    0.0001
53253.7451       385     -0.0001        Lew Cook (CCD)    0.0001
53254.7233       392      0.0002        Lew Cook (CCD)    0.0001

----------------------------------------------------------------

SS ARI
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
52524.8501    33243.5   -0.1931   46   G. Samolyk (CCD)   0.0004
52609.7003    33452.5   -0.1956   47   G. Samolyk (CCD)   0.0002
52612.5432    33459.5   -0.1947   69   S. Dvorak (CCD)    0.0001
52683.5889    33634.5   -0.1978   61   G. Samolyk (CCD)   0.0003
52979.5498    34363.5   -0.2063   51   J. Bialozynski (CCD) 0.0005
52999.644     34413     -0.209    20   B. Manske
53309.8163    35177     -0.2156   25   S. Dvorak (CCD)    0.0002
53315.7070    35191.5   -0.2118   23   S. Brady (CCD)     0.0008
53322.6048    35208.5   -0.2159   61   G. Samolyk (CCD)   0.0001
53329.5095    35225.5   -0.2131   26   S. Brady (CCD)     0.0002
53332.7567    35233.5   -0.2138   26   S. Brady (CCD)     0.0003
53345.5448    35265     -0.2145   23   S. Brady (CCD)     0.0005
53357.5197    35294.5   -0.2164   19   S. Brady (CCD)     0.0007

----------------------------------------------------------------

TT AUR
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
51544.639     22737     -0.013    24   G. Samolyk
51576.641     22761      0.003    19   G. Samolyk
52353.6169    23344     -0.0053   66   S. Dvorak (CCD)    0.0004
52947.356     23789.5    0.000    11   S. Foglia
52949.351 :   23791     -0.004     7   S. Foglia
52986.675     23819      0.004    35   G. Samolyk
53001.323 :   23830     -0.008     8   M. Csukas
53098.617 :   23903     -0.004     6   D. Weier
53098.617     23903     -0.004     7   B. Manske
53323.844     24072     -0.009    23   G. Samolyk

----------------------------------------------------------------

Y CAM
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
50376.599      2243      0.156    21   G. Samolyk
50518.763      2286      0.178    23   M. Baldwin
50541.889      2293      0.165    14   M. Baldwin
50614.628      2315      0.180     6   M. Baldwin
50690.653      2338      0.176    13   M. Baldwin
50776.602      2364      0.178    13   M. Baldwin
50809.664      2374      0.184     9   S. Cook (CCD)
50928.670      2410      0.188    19   M. Baldwin
51976.5834     2727      0.2181   55   S. Dvorak (CCD)    0.0007
53298.892      3127      0.277    15   S. Cook (CCD)
53394.755      3156      0.277    26   S. Cook (CCD)
53589.7988     3215      0.2888  116   G. Samolyk (CCD)   0.0002

----------------------------------------------------------------

AL CAM
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
50188.653 :   17900     -0.037     7   R. Hill
50965.744     18485     -0.021    16   R. Hill
51256.642     18704     -0.028    15   G. Samolyk
51608.6527    18969     -0.0256  110   G. Lubcke (CCD)    0.0002
51608.654     18969     -0.024    16   D. Williams
51657.804     19006     -0.023    16   D. Williams
51693.670     19033     -0.022    21   C. Stephan
51960.667     19234     -0.020    20   C. Stephan
52057.6304    19307     -0.0246   95   S. Dvorak (CCD)    0.0001
53303.605     20245     -0.027    19   S. Cook (CCD)
53469.6476    20370     -0.0257   79   G. Samolyk (CCD)   0.0002

----------------------------------------------------------------

AM CMI
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
43100.777     17520     -0.015    10   G. Samolyk
44634.668     19025      0.001    16   G. Samolyk
44635.689     19026      0.003    18   G. Samolyk
44957.790     19342      0.041    15   G. Samolyk
46494.687     20850      0.006     6   P. Atwood
51589.697     25849      0.105    10   S. Cook (CCD)
51960.7270    26213      0.1514  133   S. Dvorak (CCD)    0.0020
52380.6369    26625      0.1567   47   G. Samolyk (CCD)   0.0009
52650.7227    26890      0.1582   66   G. Samolyk (CCD)   0.0009
52980.9550    27214      0.1742   21   S. Dvorak (CCD)    0.0010
53363.6729    27589.5    0.1878   49   G. Samolyk (CCD)   0.0010
53392.7010    27618      0.1691   47   S. Dvorak (CCD)    0.0010

----------------------------------------------------------------

CW CAS
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
52883.7573    35286.5   -0.0258   37   G. Samolyk (CCD)   0.0002
52930.6313    35433.5   -0.0248   23   S. Dvorak (CCD)    0.0006
53223.6635    36352.5   -0.0287   47   G. Samolyk (CCD)   0.0003
53274.6807    36512.5   -0.0298   42   G. Samolyk (CCD)   0.0004
53303.5384    36603     -0.0293   48   J. Bialozynski (CCD) 0.0002
53315.6588    36641     -0.0257   20   S. Brady (CCD)     0.0008
53329.5294    36684.5   -0.0257   19   S. Brady (CCD)     0.0011
53332.7177    36694.5   -0.0260   26   S. Brady (CCD)     0.0005
53345.6289    36735     -0.0288   20   S. Brady (CCD)     0.0003
53355.6736    36766.5   -0.0283   20   S. Brady (CCD)     0.0006
53357.5862    36772.5   -0.0289   22   S. Brady (CCD)     0.0009
53373.688     36823     -0.030    16   C. Stephan

----------------------------------------------------------------

IV CAS
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
51497.843     10659     -0.027    20   M. Baldwin
51501.834     10663     -0.030    20   M. Baldwin
51520.808     10682     -0.028    18   M. Baldwin
51542.775     10704     -0.028    15   M. Baldwin
52278.684     11441     -0.032    15   M. Baldwin
52313.626     11476     -0.038    14   M. Baldwin
52319.620     11482     -0.035    13   M. Baldwin
52323.611     11486     -0.038    13   M. Baldwin
52931.7078    12095     -0.0430   58   G. Samolyk (CCD)   0.0002
53035.5529    12199     -0.0445   53   G. Samolyk (CCD)   0.0003
53539.8015    12704     -0.0507   93   G. Samolyk (CCD)   0.0002

----------------------------------------------------------------

V364 CAS
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
51020.765     10814.5   -0.042    18   G. Samolyk
51129.571     10885     -0.022    14   G. Samolyk
51490.641     11119     -0.030    19   G. Samolyk
51510.716     11132     -0.015    19   G. Samolyk
51544.656     11154     -0.022    21   G. Samolyk
52250.6116    11611.5   -0.0205   47   S. Dvorak (CCD)    0.0004
52625.5754    11854.5   -0.0222   26   S. Dvorak (CCD)    0.0003
52881.7250    12020.5   -0.0219   56   G. Samolyk (CCD)   0.0003
52952.7064    12066.5   -0.0216   61   G. Samolyk (CCD)   0.0002
53259.7764    12265.5   -0.0222   54   G. Samolyk (CCD)   0.0003
53314.5553    12301     -0.0222   49   G. Samolyk (CCD)   0.0003
53341.5599    12318.5   -0.0213   58   G. Samolyk (CCD)   0.0002
53539.8433    12447     -0.0221   52   G. Samolyk (CCD)   0.0003

----------------------------------------------------------------

U CEP
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
52342.468      3129      0.119    11   S. Kracenicki
52372.381      3141      0.116     8   S. Kracenicki
52434.718      3166      0.127    13   D. Williams
52529.441      3204      0.114    11   S. Kracenicki
52616.701      3239      0.117    26   G. Samolyk
52616.705      3239      0.121    16   D. Williams
52995.654      3391      0.127    28   G. Samolyk
53005.632      3395      0.133    19   D. Williams
53274.885      3503      0.137    16   D. Williams
53314.780      3519      0.143    33   G. Samolyk
53354.670      3535      0.144    33   G. Samolyk
53399.541      3553      0.140    31   G. Chaple
53511.7301     3598      0.1421  135   G. Samolyk (CCD)   0.0001

----------------------------------------------------------------

DV CEP
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
51012.699      3657      0.004    16   G. Samolyk
51873.7140     4398     -0.0042   21   G. Samolyk (CCD)   0.0004
52210.6869     4688     -0.0040   72   G. Samolyk (CCD)   0.0001
52468.6458     4910     -0.0035   48   G. Samolyk (CCD)   0.0003
52504.6656     4941     -0.0049   17   G. Samolyk (CCD)   0.0010
52518.6103     4953     -0.0039   49   G. Samolyk (CCD)   0.0003
52791.6747     5188     -0.0036   52   H. Gerner (CCD)    0.0004
52963.6467     5336     -0.0038   71   J. Bialozynski (CCD) 0.0002
53265.7604     5596     -0.0036   84   G. Samolyk (CCD)   0.0002
53314.5631     5638     -0.0038   53   G. Samolyk (CCD)   0.0002
53581.8173     5868     -0.0038   92   G. Samolyk (CCD)   0.0001

----------------------------------------------------------------

TW CET
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
52586.760     32234     -0.022    14   C. Stephan
52587.711     32237     -0.022    13   C. Stephan
52589.610     32243     -0.024    14   C. Stephan
52601.6540    32281     -0.0202   20   S. Dvorak (CCD)    0.0002
52602.611     32284     -0.014    17   C. Stephan
52609.578     32306     -0.017    18   C. Stephan
52931.8131    33323     -0.0208   33   B. Manske (CCD)    0.0004
52979.6573    33474     -0.0212   34   G. Samolyk (CCD)   0.0002
52991.701     33512     -0.018    14   C. Stephan
52993.5988    33518     -0.0212   37   S. Dvorak (CCD)    0.0001
53238.8414    34292     -0.0220   46   G. Samolyk (CCD)   0.0004
53316.6273    34537.5   -0.0232   42   G. Samolyk (CCD)   0.0001
53363.5213    34685.5   -0.0233   58   G. Samolyk (CCD)   0.0001

----------------------------------------------------------------

RW COM
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
52426.687     52262.5   -0.019    13   G. Samolyk
52597.9257    52984     -0.0258   40   G. Samolyk (CCD)   0.0005
52611.9286    53043     -0.0263   32   S. Dvorak (CCD)    0.0001
52735.7040    53564.5   -0.0268   22   S. Dvorak (CCD)    0.0005
52735.716     53564.5   -0.015    15   C. Stephan
52739.6212    53581     -0.0258   35   G. Samolyk (CCD)   0.0003
52762.649     53678     -0.021    17   C. Stephan
52993.9379    54652.5   -0.0252   35   S. Dvorak (CCD)    0.0001
53050.7841    54892     -0.0233   32   G. Samolyk (CCD)   0.0003
53179.6640    55435     -0.0223   36   G. Samolyk (CCD)   0.0002
53413.6895    56421     -0.0198   29   G. Samolyk (CCD)   0.0003
53466.620     56644     -0.017    15   S. Cook (CCD)
53489.4035    56740     -0.0192        J. Coloma (CCD)    0.0007
53530.822     56914.5   -0.018    21   C. Stephan

----------------------------------------------------------------

RZ COM
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
52374.6067    51807.5    0.0353   57   G. Lubcke (CCD)    0.0001
52426.745     51961.5    0.044    13   G. Samolyk
52734.618     52871      0.045    16   C. Stephan
52735.632     52874      0.044    12   C. Stephan
52747.8080    52910      0.0336   17   S. Dvorak (CCD)    0.0010
52804.6808    53078      0.0374   41   G. Samolyk (CCD)   0.0003
53057.7152    53825.5    0.0385   42   G. Samolyk (CCD)   0.0002
53092.7509    53929      0.0389   62   S. Dvorak (CCD)    0.0001
53442.7670    54963      0.0397   41   H. Gerner (CCD)    0.0005
53488.6343    55098.5    0.0395   73   S. Dvorak (CCD)    0.0001
53530.783     55223      0.044    18   C. Stephan

----------------------------------------------------------------

CC COM
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
52380.6044    58214     -0.0097   25   G. Lubcke (CCD)    0.0002
52405.655     58327.5   -0.007     9   C. Stephan
52624.9054    59321     -0.0084   28   S. Dvorak (CCD)    0.0001
52683.9363    59588.5   -0.0111   26   S. Dvorak (CCD)    0.0002
52707.7708    59696.5   -0.0107   32   G. Samolyk (CCD)   0.0002
52739.7698    59841.5   -0.0112   37   G. Samolyk (CCD)   0.0002
53064.9507    61315     -0.0116   18   S. Dvorak (CCD)    0.0002
53149.702     61699     -0.004    20   R. Hill
53189.6382    61880     -0.0118   37   G. Samolyk (CCD)   0.0002
53339.9256    62561     -0.0118   40   S. Dvorak (CCD)    0.0001
53442.8755    63027.5   -0.0120   39   G. Samolyk (CCD)   0.0001
53470.7920    63154     -0.0123   19   S. Dvorak (CCD)    0.0002
53509.4112    63329     -0.0132        J. Coloma (CCD)    0.0002
53530.819     63426     -0.012    21   C. Stephan

----------------------------------------------------------------

U CRB
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
49878.772      9597      0.024     7   R. Hill
50230.949 2)   9699      0.077    16   S. Cook (CCD)
50320.672      9725      0.042    12   N. Simmons
50365.563 :    9738      0.055    10   R. Schmude
50572.714      9798      0.074    22   G. Samolyk
50572.736      9798      0.096    15   S. Cook (CCD)
50938.668      9904      0.094    13   R. Berg
51663.630     10114      0.094    21   C. Stephan
52816.655     10448      0.084    24   C. Stephan
53503.626     10647      0.067    28   S. Cook (CCD)
53610.6863    10678      0.1087   64   G. Samolyk (CCD)   0.0009

2) Observations combined from 50213 to 50251

----------------------------------------------------------------

V CRT
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
50165.770     12490      0.007    10   M. Baldwin
51607.748     14544      0.003    15   C. Stephan
51664.6045    14625     -0.0058   26   S. Dvorak (CCD)
51685.6657    14655     -0.0056   34   G. Samolyk (CCD)   0.0004
51989.6464    15088     -0.0066   59   G. Samolyk (CCD)   0.0003
52015.614     15125     -0.014    21   C. Stephan
52041.5960    15162     -0.0076   59   S. Dvorak (CCD)    0.0004
52349.794     15601     -0.003    12   C. Stephan
52783.6515    16219     -0.0043   43   H. Gerner (CCD)    0.0008
53077.8032    16638     -0.0057   52   G. Samolyk (CCD)   0.0008
53435.8411    17148     -0.0062   38   G. Samolyk (CCD)   0.0006
53478.663     17209     -0.009    21   S. Cook (CCD)
53485.6868    17219     -0.0051   78   J. Bialozynski (CCD) 0.0005
53504.646     17246     -0.001    20   S. Cook (CCD)

----------------------------------------------------------------

KV CYG
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
43373.823      4898      0.043    19   D. Ruokonen
44486.685      5290      0.020    19   G. Hanson
45173.712      5532      0.010    15   G. Samolyk
45298.628      5576      0.011    16   G. Samolyk
46709.625      6073      0.028    20   G. Samolyk
48506.714      6706      0.034    26   G. Samolyk
50692.748      7476      0.043    23   G. Samolyk
52174.7050     7998      0.0452  100   C. Hesseltine (CCD)0.0009
52418.8498     8084      0.0365   38   S. Dvorak (CCD)    0.0003
53565.8111     8488      0.0444   94   G. Samolyk (CCD)   0.0005

----------------------------------------------------------------

V456 CYG
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
51084.6730     6927      0.0316   53   G. Samolyk (CCD)   0.0007
51085.5621     6928      0.0295   58   G. Samolyk (CCD)   0.0002
51411.7417     7294      0.0328   42   C. Hesseltine (CCD)0.0005
52220.5010     8201.5    0.0352   41   S. Dvorak (CCD)    0.0080
52261.4954     8247.5    0.0347   24   S. Dvorak (CCD)    0.0004
52504.7909     8520.5    0.0348   20   S. Dvorak (CCD)    0.0003
52534.6473     8554      0.0363   33   G. Lubcke (CCD)    0.0001
52616.6373     8646      0.0365   35   G. Samolyk (CCD)   0.0002
52951.7265     9022      0.0375   48   G. Samolyk (CCD)   0.0002
53321.5733     9437      0.0395   54   G. Samolyk (CCD)   0.0001
53338.5058     9456      0.0394   28   S. Dvorak (CCD)    0.0002
53557.7394     9702      0.0397   71   G. Samolyk (CCD)   0.0002
53590.7141     9739      0.0403   61   R. Poklar (CCD)    0.0002

----------------------------------------------------------------

V1034 CYG
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
43304.777       375     -0.031    13   G. Samolyk
43347.760       419     -0.033    11   G. Samolyk
43687.725       767     -0.040    15   G. Samolyk
43777.634       859     -0.009    12   G. Samolyk
44111.732      1201     -0.021    12   G. Samolyk
44156.665      1247     -0.027    13   G. Samolyk
44921.624      2030     -0.005    19   G. Samolyk
45171.682      2286     -0.041    12   G. Samolyk
45552.701      2676     -0.025    16   G. Samolyk
45888.741      3020     -0.050    15   G. Samolyk
46654.679      3804     -0.026    12   G. Samolyk
50255.652 :    7490     -0.020    12   S. Cook (CCD)
50540.921      7782     -0.015     9   S. Cook (CCD)
52495.7698     9783     -0.0052   74   C. Hesseltine (CCD)0.0006
52791.7779    10086     -0.0072   40   N. Simmons (CCD)   0.0007
52792.7453    10087     -0.0167   82   C. Limbach (CCD)   0.0004
53218.6974    10523     -0.0065  100   C. Hesseltine (CCD)0.0005
53265.5909    10571     -0.0057   49   G. Samolyk (CCD)   0.0003
53511.7762    10823     -0.0070   94   G. Samolyk (CCD)   0.0004
53557.687 :   10870     -0.012    15   S. Cook (CCD)

----------------------------------------------------------------

BH DRA
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
50539.789      5789     -0.003    16   M. Baldwin
50579.772      5811      0.000    12   M. Baldwin
50770.579      5916     -0.003    17   G. Samolyk
50948.671      6014      0.000    14   M. Baldwin
51088.612      6091      0.014    20   G. Samolyk
51275.757      6194     -0.017    15   M. Baldwin
51384.816      6254      0.008    17   G. Samolyk
51424.780      6276     -0.007    21   M. Baldwin
51435.696      6282      0.005    23   M. Baldwin
51693.723      6424     -0.016    18   G. Samolyk
53314.716      7316      0.000    24   G. Samolyk
53563.6736     7453     -0.0037   44   G. Samolyk (CCD)   0.0003

----------------------------------------------------------------

TX GEM
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
43883.730      8584     -0.002    22   G. Samolyk
46123.739      9384     -0.004    13   P. Atwood
46879.743      9654     -0.004    13   P. Atwood
47540.548      9890     -0.002    13   G. Samolyk
47621.743      9919     -0.008    16   R. Hill
48251.745     10144     -0.009    29   G. Samolyk
49388.551     10550     -0.009    10   G. Samolyk
51950.5557    11465     -0.0168   48   S. Dvorak (CCD)    0.0002
52356.5565    11610     -0.0180   43   S. Dvorak (CCD)    0.0002
52678.5564    11725     -0.0197   66   G. Samolyk (CCD)   0.0002
53406.5589    11985     -0.0209   65   G. Samolyk (CCD)   0.0002

----------------------------------------------------------------

WW GEM
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
43204.701     13912      0.017    17   G. Samolyk
43537.664     14181      0.009    14   G. Samolyk
43948.621     14513      0.013    17   G. Samolyk
44614.577     15051      0.027    15   G. Samolyk
44635.602     15068      0.009    17   G. Samolyk
44989.611     15354      0.004    12   G. Samolyk
47170.649     17116      0.019    15   G. Samolyk
48654.796     18315      0.031    16   G. Samolyk
51558.700     20661      0.030    15   S. Cook (CCD)
51579.742     20678      0.029    17   G. Samolyk
51610.685     20703      0.027    17   M. Baldwin
51969.6569    20993      0.0336   57   S. Dvorak (CCD)    0.0004
52713.5661    21594      0.0184   34   G. Samolyk (CCD)   0.0007
53323.8100    22087      0.0214   80   G. Samolyk (CCD)   0.0003
53354.7566    22112      0.0228   48   J. Bialozynski (CCD) 0.0009
53442.6434    22183      0.0250   72   H. Gerner (CCD)    0.0007
53442.6438    22183      0.0254   77   C. Hesseltine (CCD)0.0002

----------------------------------------------------------------

UX HER
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
50320.740      6875      0.032    19   G. Samolyk
50602.626      7057      0.028    12   S. Cook (CCD)
51020.814      7327      0.027    16   G. Samolyk
51048.696      7345      0.030    19   D. Williams
51384.801      7562      0.035    16   G. Samolyk
52126.7022     8041      0.0377   86   G. Samolyk (CCD)   0.0001
52775.6764     8460      0.0446   33   R. Poklar (CCD)    0.0004
52902.6836     8542      0.0463   62   C. Hesseltine (CCD)0.0001
53204.7125     8737      0.0499   59   B. Manske (CCD)    0.0002
53540.8171     8954      0.0545   82   G. Samolyk (CCD)   0.0001

----------------------------------------------------------------

SW LAC
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
52860.7891    23651.5   -0.0890   39   G. Samolyk (CCD)   0.0002
52883.576     23722.5   -0.073    10   C. Stephan
52897.669     23766.5   -0.092    16   C. Stephan
52918.681     23832     -0.087    11   C. Stephan
52930.713     23869.5   -0.082    13   C. Stephan
52939.681     23897.5   -0.094    14   C. Stephan
53257.687     24889     -0.083    21   B. Manske
53274.681     24942     -0.087    13   D. Williams
53281.7301    24964     -0.0941   53   G. Samolyk (CCD)   0.0001
53328.714     25110.5   -0.096    19   S. Cook (CCD)
53333.3654    25125     -0.0949        J. Coloma (CCD)    0.0001
53344.5905    25160     -0.0950   36   G. Samolyk (CCD)   0.0001
53557.8683    25825     -0.0966   42   G. Samolyk (CCD)   0.0004
53585.776     25912     -0.092    16   C. Stephan

----------------------------------------------------------------

AW LAC
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
43045.868     14369      0.037    14   G. Wedemayer
43045.872     14369      0.041    15   G. Samolyk
43420.731     14697      0.045    28   G. Samolyk
43820.734     15047      0.051    26   G. Samolyk
50304.173 3)  20720      0.103    19   S. Cook (CCD)
52235.6224    22410      0.1364   85   C. Hesseltine (CCD)0.0008
53035.6367    23110      0.1558   90   C. Hesseltine (CCD)0.0008
53251.6335    23299      0.1540   63   G. Samolyk (CCD)   0.0003
53323.6345    23362      0.1555  148   C. Hesseltine (CCD)0.0001
53603.6362    23607      0.1590   82   G. Samolyk (CCD)   0.0002

3) Observations combined from 50300 to 50308

----------------------------------------------------------------

V508 OPH
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
46239.673      3356      0.008    10   D. Williams
46240.699      3359     -0.001    14   D. Williams
46246.738      3376.5    0.004    10   D. Williams
46264.665      3428.5    0.002    10   D. Williams
46265.702      3431.5    0.005    10   D. Williams
46269.665      3443      0.003    12   D. Williams
46274.666      3457.5    0.004    10   D. Williams
52466.6085    21416     -0.0027   29   S. Dvorak (CCD)    0.0001
53316.5172    23881     -0.0066   41   G. Samolyk (CCD)   0.0002
53524.4294    24484     -0.0041        J. Coloma (CCD)    0.0002
53541.6649    24534     -0.0082   47   R. Poklar (CCD)    0.0001
53561.6623    24592     -0.0087   40   C. Hesseltine (CCD)0.0001

----------------------------------------------------------------

V839 OPH
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
46217.731     14106      0.030    14   D. Williams
46225.702     14125.5    0.026    14   D. Williams
46233.682     14145      0.030    14   D. Williams
46237.759     14155      0.017    13   D. Williams
46246.769     14177      0.029    12   D. Williams
46269.679     14233      0.036    14   D. Williams
49213.681     21431      0.089    12   D. Williams
50237.010 4)  23933      0.112    22   S. Cook (CCD)
52508.6235    29487      0.1656   61   S. Dvorak (CCD)    0.0001
53092.8878    30915.5    0.1801   95   S. Dvorak (CCD)    0.0002
53469.7881    31837      0.1912   62   G. Samolyk (CCD)   0.0001
53538.701     32005.5    0.188    15   S. Cook (CCD)
53539.7271    32008      0.1920   88   C. Hesseltine (CCD)0.0001

4) Observations combined from 50226 to 50248

----------------------------------------------------------------

EF ORI
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
51144.9020     -744.5   -0.0114   78   G. Samolyk (CCD)   0.0007
51896.3417 5)  -280.5    0.0047  104   G. Samolyk (CCD)   0.0007
52350.5921        0      0.0001   57   G. Samolyk (CCD)   0.0003
52609.7039      160      0.0003   67   G. Samolyk (CCD)   0.0004
52651.8100      186      0.0008   65   G. Samolyk (CCD)   0.0003
52669.6237      197      0.0006   50   G. Samolyk (CCD)   0.0004
53035.6184      423      0.0001  102   G. Samolyk (CCD)   0.0005
53323.8804      601      0.0005   92   G. Samolyk (CCD)   0.0003
53413.7522      656.5   -0.0070   74   G. Samolyk (CCD)   0.0010
53435.6210      670     -0.0008   91   G. Samolyk (CCD)   0.0006

5) Observations combined from 51881 to 52312

----------------------------------------------------------------

ET ORI
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
50376.845     24915      0.002    17   G. Samolyk
51582.627     26183     -0.003    20   G. Samolyk
51602.6031    26204      0.0036   41   G. Lubcke (CCD)    0.0001
51930.676     26549      0.004    13   R. Hill
52261.5997    26897      0.0019   51   S. Dvorak (CCD)    0.0001
52667.652     27324      0.005    15   R. Hill
52956.7302    27628     -0.0016   24   S. Dvorak (CCD)    0.0002
53018.5418    27693     -0.0008   42   G. Samolyk (CCD)   0.0003
53369.4331    28062     -0.0047        J. Coloma (CCD)
53405.5696    28100     -0.0038   69   G. Samolyk (CCD)   0.0002

----------------------------------------------------------------

Z PER
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
50735.647      1661     -0.123    16   S. Cook (CCD)
51496.656      1910     -0.135    26   M. Baldwin
51551.6692     1928     -0.1349        J. A. Howell (CCD) 0.0003
51606.684      1946     -0.134    18   R. Hill
51872.5728     2033     -0.1435        J. A. Howell (CCD) 0.0001
51878.687      2035     -0.142    25   R. Hill
51930.646      2052     -0.140    28   G. Samolyk
52208.752 6)   2143     -0.158    37   R. Hill
52254.606      2158     -0.149    21   G. Samolyk
52957.5272     2388     -0.1780   49   G. Samolyk (CCD)   0.0007
53354.8319     2518     -0.1931   88   G. Samolyk (CCD)   0.0005

6) Observations combined from 52205 to 52211

----------------------------------------------------------------

RT PER
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
51940.5978    21856      0.0461        J. A. Howell (CCD) 0.0001
52525.8369    22545      0.0484   56   G. Samolyk (CCD)   0.0002
52589.548     22620      0.054    12   C. Stephan
52605.682     22639      0.050    12   R. Hays
52616.723     22652      0.049    11   D. Williams
52667.691     22712      0.053    12   R. Hill
52684.6753    22732      0.0489   47   S. Jamieson (CCD)  0.0001
52966.683     23064      0.056    12   C. Stephan
53023.592     23131      0.055    12   R. Hays
53029.5343    23138      0.0514   46   G. Samolyk (CCD)   0.0002
53051.624     23164      0.057    13   R. Hays
53259.723     23409      0.053    12   D. Williams
53321.730     23482      0.053    23   S. Cook (CCD)
53322.5784    23483      0.0524   54   G. Samolyk (CCD)   0.0001
53340.4159    23504      0.0525        J. Coloma (CCD)    0.0002
53350.6089    23516      0.0527   27   C. Norris (CCD)    0.0005
53367.5971    23536      0.0529   27   C. Norris (CCD)    0.0007

----------------------------------------------------------------

BETA PER
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
52531.700      2403      0.054     7   G. Sarty
52574.716      2418      0.061    23   G. Chaple
52617.715      2433      0.050    10   G. Sarty
52640.658      2441      0.055    24   G. Samolyk
52663.584      2449      0.042    19   G. Samolyk
52669.325      2451      0.049    23   J. Virtanen
52689.375      2458      0.028    11   S. Foglia
53050.676      2584      0.048    23   G. Samolyk
53265.736      2659      0.060    29   G. Samolyk
53288.674      2667      0.060    27   G. Samolyk
53354.609      2690      0.047    20   G. Chaple
53354.630      2690      0.068    30   G. Samolyk
53374.701      2697      0.068    20   C. Stephan

----------------------------------------------------------------

RZ TAU
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
52671.658     36074      0.042    16   C. Stephan
52678.7224    36091      0.0398   55   G. Samolyk (CCD)   0.0002
52713.6390    36175      0.0397   41   G. Samolyk (CCD)   0.0001
52999.627     36863      0.044    14   B. Manske
53024.5656    36923      0.0417   52   J. Bialozynski (CCD) 0.0002
53048.6754    36981      0.0423   55   J. Bialozynski (CCD) 0.0002
53329.6761    37657      0.0469   28   S. Brady (CCD)     0.0004
53332.7942    37664.5    0.0475   32   S. Brady (CCD)     0.0002
53345.6784    37695.5    0.0457   26   S. Brady (CCD)     0.0003
53357.5234    37724      0.0440   23   S. Brady (CCD)     0.0021
53357.7321    37724.5    0.0449   24   S. Brady (CCD)     0.0005
53371.6564    37758      0.0441   31   C. Limbach (CCD)   0.0002
53410.722     37852      0.036    22   S. Cook (CCD)

----------------------------------------------------------------

WY TAU
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
51608.7039    20507      0.0494   44   C. Hesseltine (CCD)0.0002
51633.6408    20543      0.0470   92   G. Samolyk (CCD)   0.0002
52235.6507    21412      0.0498   87   G. Samolyk (CCD)   0.0004
52282.7582    21480      0.0498   71   S. Dvorak (CCD)    0.0005
52307.6979    21516      0.0502   49   S. Dvorak (CCD)    0.0002
52559.8624    21880      0.0506   53   G. Samolyk (CCD)   0.0003
52616.6688    21962      0.0508   58   G. Samolyk (CCD)   0.0002
52659.6214    22024      0.0524   25   S. Dvorak (CCD)    0.0004
53360.6925    23036      0.0520   23   S. Dvorak (CCD)    0.0002
53398.7940    23091      0.0518   60   J. Bialozynski (CCD) 0.0002
53466.676 :   23189      0.043     6   S. Cook (CCD)

----------------------------------------------------------------

AM TAU
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
42802.744     -1199     -0.006    16   P. Atwood
42804.781     -1198     -0.013    13   P. Atwood
46105.730       417     -0.004    10   P. Atwood
46522.686       621     -0.009     9   P. Atwood
46849.723       781      0.000    14   P. Atwood
47505.818      1102     -0.005    15   P. Atwood
49774.567      2212     -0.014     9   M. Baldwin
52290.6065     3443     -0.0477   54   S. Dvorak (CCD)    0.0001
52580.8408     3585     -0.0509   24   S. Dvorak (CCD)    0.0002
53322.7814     3948     -0.0554   80   G. Samolyk (CCD)   0.0001
53414.758      3993     -0.056    30   S. Cook (CCD)

----------------------------------------------------------------

EQ TAU
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
52310.5194    35439.5   -0.0251   20   S. Dvorak (CCD)    0.0002
52496.8946    35985.5   -0.0261   39   S. Dvorak (CCD)    0.0001
52558.857     36167     -0.018    13   G. Samolyk
52606.6370    36307     -0.0273   30   G. Samolyk (CCD)   0.0003
52645.5508    36421     -0.0272   83   J. A. Howell (CCD) 0.0001
52672.6923    36500.5   -0.0229   39   M. Spearman (CCD)  0.0005
52928.6994    37250.5   -0.0272   34   S. Dvorak (CCD)    0.0002
52991.684     37435     -0.021    13   C. Stephan
53302.8178    38346.5   -0.0267   43   S. Dvorak (CCD)    0.0001
53341.5589    38460     -0.0286   52   G. Samolyk (CCD)   0.0003
53392.4197    38609     -0.0288        J. Coloma (CCD)    0.0005

----------------------------------------------------------------

TY UMA
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
52370.6980    36210.5    0.1815   60   G. Lubcke (CCD)    0.0001
52645.8274    36986.5    0.1890   36   S. Dvorak (CCD)    0.0001
52696.7077    37130      0.1930   40   S. Jamieson (CCD)  0.0001
52712.6627    37175      0.1937   65   S. Jamieson (CCD)  0.0002
52739.7847    37251.5    0.1935   51   G. Samolyk  (CCD)  0.0002
52756.6274    37299      0.1957   19   S. Dvorak (CCD)    0.0003
53197.6877    38543      0.2099   54   G. Samolyk (CCD)   0.0001
53342.8764    38952.5    0.2151   21   S. Dvorak (CCD)    0.0001
53406.6947    39132.5    0.2164   42   N. Simmons (CCD)   0.0002
53467.674     39304.5    0.215    14   S. Cook (CCD)
53469.8042    39310.5    0.2181   79   G. Samolyk (CCD)   0.0002
53539.6504    39507.5    0.2202   70   G. Samolyk (CCD)   0.0001

----------------------------------------------------------------

UX UMA
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
52327.722     75735      0.002     7   R. Hill
52370.5954    75953      0.0013   12   G. Lubcke (CCD)    0.0008
52735.8145    77810      0.0018   27   G. Samolyk (CCD)   0.0001
52781.6385    78043      0.0014   30   G. Samolyk (CCD)   0.0001
52791.6688    78094      0.0015   30   G. Samolyk (CCD)   0.0002
52804.6493    78160      0.0017   21   G. Samolyk (CCD)   0.0001
52976.9332    79036      0.0015   23   S. Dvorak (CCD)    0.0003
53113.8163    79732      0.0014   33   S. Dvorak (CCD)    0.0002
53195.6319    80148      0.0018   30   G. Samolyk (CCD)   0.0001
53232.6058    80336      0.0014   31   G. Samolyk (CCD)   0.0001
53406.6597    81221      0.0013   33   G. Samolyk (CCD)   0.0002
53416.4932    81271      0.0012        R. Casas (CCD)     0.0001
53511.6822    81755      0.0013   28   G. Samolyk (CCD)   0.0001

----------------------------------------------------------------

VV UMA
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
52318.5842     9461     -0.0545  131   G. Lubcke (CCD)    0.0001
52638.9041     9927     -0.0537   25   S. Dvorak (CCD)    0.0001
52694.579     10008     -0.057    12   C. Stephan
52696.6445    10011     -0.0532   41   J. A. Howell (CCD) 0.0003
52727.574     10056     -0.056     8   C. Stephan
52740.6369    10075     -0.0531   43   G. Samolyk (CCD)   0.0001
52762.624     10107     -0.062    20   C. Stephan
52773.6309    10123     -0.0533   46   G. Samolyk (CCD)   0.0001
53098.7630    10596     -0.0520   70   G. Samolyk (CCD)   0.0001
53435.583     11086     -0.048    16   G. Chaple
53472.699     11140     -0.051    21   S. Cook (CCD)

----------------------------------------------------------------

AF UMA
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
43131.901      3107      0.278    10   G. Wedemayer
43131.904      3107      0.281    23   G. Samolyk
43210.785      3122      0.298    25   G. Samolyk
43436.842      3165      0.280    23   G. Samolyk
43883.739      3250      0.285    31   G. Samolyk
44598.788      3386      0.307    31   G. Samolyk
44640.867      3394      0.325    30   G. Hanson
52616.7361     4911      0.4835   12   G. Samolyk (CCD)   0.0020
53473.7361     5074      0.5020   90   G. Samolyk (CCD)   0.0004
53505.287 7)   5080      0.5076   31   S. Cook (CCD)      0.002

7) Observations combined from 53473 to 53531

----------------------------------------------------------------

BH VIR
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
50166.662 :    8491     -0.004     6   S. Cook (CCD)
50197.700      8529     -0.007    14   S. Cook (CCD)
50581.633      8999     -0.004    15   S. Cook (CCD)
50897.754      9386     -0.012    21   C. Stephan
51315.590 :    9897.5   -0.006    15   C. Stephan
51663.586 :   10323.5    0.003    12   C. Stephan
52015.647 :   10754.5   -0.008    21   C. Stephan
53394.9374    12443     -0.0050   76   S. Dvorak (CCD)    0.0001
53435.7795    12493     -0.0065   80   G. Samolyk (CCD)   0.0001
53507.665     12581     -0.006    21   S. Cook (CCD)
53511.7483    12586     -0.0068  100   C. Hesseltine (CCD)0.0002

----------------------------------------------------------------

BE VUL
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
50719.624      6835      0.022    16   D. Williams
50733.586      6844      0.016    16   D. Williams
51048.658      7047      0.023    15   D. Williams
51453.740      7308      0.021    14   R. Hill
51734.667      7489      0.028    14   D. Williams
51793.637      7527      0.021    15   G. Samolyk
52496.7289     7980      0.0368   55   G. Samolyk (CCD)   0.0003
53238.6197     8458      0.0505   48   G. Samolyk (CCD)   0.0001
53314.6708     8507      0.0515   60   G. Samolyk (CCD)   0.0001
53553.685      8661      0.051    13   D. Williams

----------------------------------------------------------------

BS VUL
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
52042.786     18428      0.006    12   G. Samolyk
52133.688     18619     -0.003    15   G. Samolyk
52225.551     18812     -0.002    16   G. Samolyk
52235.550     18833      0.001    16   G. Samolyk
52448.7690    19281     -0.0149   49   G. Samolyk (CCD)   0.0001
52521.5919    19434     -0.0156   34   G. Samolyk (CCD)   0.0003
52876.6663    20180     -0.0160   61   R. Poklar (CCD)    0.0003
52886.6613    20201     -0.0164   34   G. Samolyk (CCD)   0.0002
53233.6424    20930     -0.0185   63   J. Bialozynski (CCD) 0.0003
53344.5428    21163     -0.0194   46   G. Samolyk (CCD)   0.0001
53539.6916    21573     -0.0189   48   H. Gerner (CCD)    0.0001
53559.677     21615     -0.024    21   S. Cook (CCD)
53610.6106    21722     -0.0197   42   N. Simmons (CCD)   0.0001

----------------------------------------------------------------

BU VUL
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
52469.7893    33280      0.0193   44   G. Samolyk (CCD)   0.0002
52497.668     33329      0.017    12   D. Williams
52518.7235    33366      0.0201   22   G. Samolyk (CCD)   0.0009
52811.7527    33881      0.0179   47   G. Samolyk (CCD)   0.0001
52902.7913    34041      0.0176   45   G. Samolyk (CCD)   0.0003
52934.6548    34097      0.0175   17   S. Dvorak (CCD)    0.0006
53239.636     34633      0.018    10   D. Williams
53239.6371    34633      0.0195   56   J. Bialozynski (CCD) 0.0004
53265.8087    34679      0.0175   39   G. Samolyk (CCD)   0.0001
53309.6210    34756      0.0173   59   S. Dvorak (CCD)    0.0001
53321.5695    34777      0.0169   54   G. Samolyk (CCD)   0.0001
53342.623     34814      0.018    12   S. Cook (CCD)
53540.6323    35162      0.0174   42   G. Samolyk (CCD)   0.0002
53553.714     35185      0.012    12   D. Williams
53603.7893    35273      0.0162   56   G. Samolyk (CCD)   0.0002

----------------------------------------------------------------

CD VUL
JD(min)                                                   STANDARD
  HEL.        CYCLE     O-C      N     OBSERVER           ERROR
2400000 +
51069.676      6978     -0.002    25   G. Samolyk
51097.717      7019      0.006    18   R. Hill
51452.587      7538      0.012    17   G. Samolyk
51791.720      8034      0.008    17   R. Hill
51804.713      8053      0.010    14   G. Samolyk
52096.6623     8480     -0.0003   78   C. Hesseltine (CCD)0.0002
52496.6525     9065     -0.0009   18   S. Dvorak (CCD)    0.0002
52861.7711     9599     -0.0022   47   G. Samolyk (CCD)   0.0003
52920.5736     9685     -0.0017   59   G. Samolyk (CCD)   0.0002
53274.7538    10203     -0.0014   66   G. Samolyk (CCD)   0.0001
53540.7305    10592     -0.0015  125   C. Hesseltine (CCD)0.0001
53616.6257    10703     -0.0020   43   N. Simmons (CCD)   0.0002

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END OF OBSERVED TIMES OF MINIMA NUMBER 10
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