\documentstyle[twoside,ibvs2]{article}

\begin{document}

\IBVShead{5717}{21 July 2006}

\IBVStitle{The GEOS RR L\lowercase{yr} Survey}
\IBVSsubtitle{Fifth list of maxima of RR~Lyr stars observed by the automated telescope TAROT}
\IBVSsubtitle{(GEOS Circular RR 28)}

\IBVSauth{Le Borgne, J.F.$^{1,2}$; Klotz, A.$^3$; Bo\"er, M.$^4$}

\IBVSinst{GEOS (Groupe Europ\'een d'Observations Stellaires), 23 Parc de
Levesville, 28300 Bailleau l'Ev\^eque, France}
\IBVSinst{Laboratoire d'Astrophysique, Observatoire Midi-Pyr\'en\'ees, Toulouse, France}
\IBVSinst{Centre d'Etude Spatiale des Rayonnements, Observatoire Midi-Pyr\'en\'ees, Toulouse, France}
\IBVSinst{Observatoire de Haute-Provence, France}


\begintext

We present here the fifth list of light maxima of RR~Lyrae stars from the
GEOS RR~Lyr Survey, a GEOS program ({\tt http://www.upv.es/geos/}) (Boninsegna
et al., 2002) of automated observations of RR~Lyr stars started in January 2004.
We are using the 25-cm automatic telescope TAROT ({\tt http://tarot.obs-hp.fr})
(Bo\"er et al., 2001, Bringer et al., 1999) located in Calern Observatory
(Observatoire de la C\^ote d'Azur, Nice University, France). Images are obtained by a
$2048\times2048$ Marconi 42-40 thin back illuminated CCD{}. Field of view is
$1.86\deg\times1.86\deg$. Data reduction, from bias subtraction and
flatfielding to photometry using SExtractor (Bertin and Arnouts, 1996),
is performed automatically.
The aim of this legacy project for the study of period variations of RR~Lyr stars
is to monitor maxima of light of these stars in order to feed the
GEOS RR\,Lyr web database ({\tt http://dbRR.ast.obs-mip.fr}).

The present list contains 290 maxima observed with no
filter between January and June 2006 (Table 1). The maxima are determined by fitting
a polynomial function on the data points. The uncertainties on individual maxima
are estimated from the data sampling of each maximum. The nominal sampling
(two consecutive 30s exposures taken every 10 minutes on a time baseline
of 2 hours centered around the predicted maximum time) may
be altered by local events (weather or telescope operation). This results uncertainties
from 0.002 to 0.010 day. For a well observed star, the mean uncertainty on maxima
is about 0.003 day (4.3 minutes). The $O-C$'s are computed with the GCVS elements
(Kholopov et al., 1985) and are displayed in table 1 in column ``$O-C$".
When no elements are available in the GCVS, the reference of the elements is given
as a footnote of Table 1. XZ Cyg is also an exception for which we use the elements from
Baldwin and Samolyk (2003).

\begin{table}[!ht]
\centerline{\bf Table 1: maxima of RR~Lyrae stars}
\begin{center}
\small
\begin{tabular}{llrr|llrr}\hline
Variable & Maximum      & $O-C$  & E & Variable & Maximum      & $O-C$  & E  \\
         & HJD 24\dots  & (days) &   &          & HJD 24\dots  & (days) &    \\
\hline
CI And    &  53738.435$\pm$0.003   &  0.002 &   1401.      & Z CVn     &  53776.590$\pm$0.003   &  0.259 &  22705.     \\
DR And    &  53739.370$\pm$0.004   & -0.016 &  29335.      & Z CVn     &  53833.472$\pm$0.005   &  0.258 &  22792.     \\
X Ari     &  53739.376$\pm$0.002   &  0.307 &  24811.      & Z CVn     &  53839.368$\pm$0.003   &  0.270 &  22801.     \\
X Ari     &  53754.352$\pm$0.004   &  0.307 &  24834.      & Z CVn     &  53867.483$\pm$0.005   &  0.271 &  22844.     \\
TZ Aur    &  53737.647$\pm$0.002   &  0.004 &  86386.      & RU CVn    &  53759.596$\pm$0.002   &  0.004 &  33626.     \\
TZ Aur    &  53785.431$\pm$0.002   &  0.003 &  86508.      & RU CVn    &  53801.444$\pm$0.002   &  0.005 &  33699.     \\
BH Aur    &  53758.455$\pm$0.002   & -0.002 &  24133.      & RU CVn    &  53848.452$\pm$0.002   &  0.006 &  33781.     \\
RS Boo    &  53795.521$\pm$0.002   & -0.007 &  31868.      & RU CVn    &  53860.489$\pm$0.002   &  0.005 &  33802.     \\
RS Boo    &  53806.466$\pm$0.003   & -0.005 &  31897.      & RU CVn    &  53895.458$\pm$0.002   &  0.006 &  33863.     \\
RS Boo    &  53807.601$\pm$0.002   & -0.002 &  31900.      & RU CVn    &  53899.471$\pm$0.005   &  0.006 &  33870.     \\
RS Boo    &  53809.488$\pm$0.002   & -0.002 &  31905.      & RZ CVn    &  53760.672$\pm$0.002   & -0.180 &  23646.     \\
RS Boo    &  53863.447$\pm$0.002   & -0.002 &  32048.      & RZ CVn    &  53776.563$\pm$0.005   & -0.176 &  23674.     \\
RS Boo    &  53869.486$\pm$0.004   &  0.000 &  32064.      & RZ CVn    &  53796.420$\pm$0.002   & -0.178 &  23709.     \\
RS Boo    &  53889.485$\pm$0.002   &  0.000 &  32117.      & RZ CVn    &  53834.437$\pm$0.004   & -0.178 &  23776.     \\
RS Boo    &  53897.410$\pm$0.004   &  0.001 &  32138.      & RZ CVn    &  53855.436$\pm$0.003   & -0.173 &  23813.     \\
RS Boo    &  53900.430$\pm$0.003   &  0.002 &  32146.      & RZ CVn    &  53881.534$\pm$0.004   & -0.176 &  23859.     \\
ST Boo    &  53809.545$\pm$0.003   &  0.071 &  55646.      & SS CVn    &  53807.665$\pm$0.002   &  0.162 &  29643.     \\
ST Boo    &  53832.559$\pm$0.003   &  0.061 &  55683.      & SS CVn    &  53866.535$\pm$0.002   &  0.174 &  29766.     \\
ST Boo    &  53834.431$\pm$0.005   &  0.066 &  55686.      & SS CVn    &  53867.488$\pm$0.002   &  0.170 &  29768.     \\
ST Boo    &  53837.541$\pm$0.002   &  0.064 &  55691.      & UZ CVn    &  53760.476$\pm$0.005   &  0.241 &  39171.     \\
ST Boo    &  53839.409$\pm$0.003   &  0.065 &  55694.      & UZ CVn    &  53776.520$\pm$0.005   &  0.236 &  39194.     \\
ST Boo    &  53857.467$\pm$0.005   &  0.077 &  55723.      & UZ CVn    &  53831.647$\pm$0.003   &  0.239 &  39273.     \\
ST Boo    &  53900.404$\pm$0.004   &  0.076 &  55792.      & UZ CVn    &  53839.322$\pm$0.002   &  0.238 &  39284.     \\
TW Boo    &  53756.643$\pm$0.002   & -0.048 &  50473.      & UZ CVn    &  53841.406$\pm$0.004   &  0.229 &  39287.     \\
TW Boo    &  53837.550$\pm$0.002   & -0.046 &  50625.      & UZ CVn    &  53857.464$\pm$0.002   &  0.238 &  39310.     \\
TW Boo    &  53851.388$\pm$0.003   & -0.047 &  50651.      & UZ CVn    &  53866.535$\pm$0.004   &  0.237 &  39323.     \\
TW Boo    &  53860.436$\pm$0.002   & -0.048 &  50668.      & UZ CVn    &  53871.416$\pm$0.002   &  0.234 &  39330.     \\
TW Boo    &  53885.451$\pm$0.003   & -0.050 &  50715.      & AA CMi    &  53755.553$\pm$0.002   &  0.049 &  36066.     \\
TW Boo    &  53893.434$\pm$0.003   & -0.051 &  50730.      & S Com     &  53749.597$\pm$0.002   & -0.095 &  22324.     \\
UY Boo    &  53802.659$\pm$0.003   & -0.025 &   3835.      & S Com     &  53759.570$\pm$0.002   & -0.094 &  22341.     \\
UY Boo    &  53806.561$\pm$0.004   & -0.029 &   3841.      & S Com     &  53776.580$\pm$0.005   & -0.095 &  22370.     \\
UY Boo    &  53832.596$\pm$0.004   & -0.031 &   3881.      & S Com     &  53796.528$\pm$0.002   & -0.091 &  22404.     \\
UY Boo    &  53834.546$\pm$0.004   & -0.033 &   3884.      & S Com     &  53840.519$\pm$0.003   & -0.094 &  22479.     \\
UY Boo    &  53849.528$\pm$0.003   & -0.023 &   3907.      & S Com     &  53850.495$\pm$0.003   & -0.090 &  22496.     \\
CM Boo    &  53850.445$\pm$0.003   & -0.074 &  29468.      & ST Com    &  53777.606$\pm$0.003   & -0.023 &  17620.     \\
AH Cam    &  53751.342$\pm$0.005   & -0.364 &  40740.      & ST Com    &  53798.561$\pm$0.002   & -0.030 &  17655.     \\
RW Cnc    &  53740.462$\pm$0.003   &  0.203 &  25921.      & ST Com    &  53831.506$\pm$0.004   & -0.026 &  17710.     \\
RW Cnc    &  53746.472$\pm$0.003   &  0.194 &  25932.      & ST Com    &  53843.486$\pm$0.002   & -0.025 &  17730.     \\
SS Cnc    &  53755.394$\pm$0.002   &  0.048 &  83511.      & ST Com    &  53849.478$\pm$0.003   & -0.022 &  17740.     \\
TT Cnc    &  53740.529$\pm$0.002   &  0.103 &  24485.      & ST Com    &  53855.465$\pm$0.003   & -0.024 &  17750.     \\
AN Cnc    &  53739.487$\pm$0.002   &  0.127 &  28185.      & HY Com    &  53850.502$\pm$0.003   &  0.042 &  21832.     \\
AS Cnc    &  53739.632$\pm$0.004   & -0.282 &  23545.      & TV CrB    &  53783.631$\pm$0.002   &  0.020 &  37914.     \\
AS Cnc    &  53744.572$\pm$0.003   & -0.283 &  23553.      & TV CrB    &  53865.488$\pm$0.002   &  0.031 &  38054.     \\
AS Cnc    &  53746.422$\pm$0.002   & -0.285 &  23556.      & TV CrB    &  53872.500$\pm$0.005   &  0.027 &  38066.     \\
EZ Cnc   $^1$ &  53738.562$\pm$0.002   & -0.029 &  12065.  & TV CrB    &  53882.429$\pm$0.002   &  0.018 &  38083.     \\
EZ Cnc   $^1$ &  53755.480$\pm$0.002   & -0.030 &  12096.  & TV CrB    &  53889.448$\pm$0.002   &  0.022 &  38095.     \\
W CVn     &  53748.640$\pm$0.005   & -0.123 &  58624.      & TV CrB    &  53896.465$\pm$0.005   &  0.023 &  38107.     \\
W CVn     &  53806.573$\pm$0.004   & -0.125 &  58729.      & TV CrB    &  53903.479$\pm$0.002   &  0.022 &  38119.     \\
W CVn     &  53807.674$\pm$0.003   & -0.127 &  58731.      & UY Cyg    &  53904.459$\pm$0.004   &  0.055 &  56127.     \\
W CVn     &  53831.399$\pm$0.003   & -0.128 &  58774.      & UY Cyg    &  53913.427$\pm$0.003   &  0.052 &  56143.     \\
W CVn     &  53842.439$\pm$0.003   & -0.123 &  58794.      & XZ Cyg   $^2$ &  53845.482$\pm$0.002   & -0.004 &  11305. \\
W CVn     &  53863.397$\pm$0.002   & -0.132 &  58832.      & XZ Cyg   $^2$ &  53850.621$\pm$0.002   &  0.003 &  11316. \\
W CVn     &  53869.474$\pm$0.004   & -0.124 &  58843.      & XZ Cyg   $^2$ &  53858.557$\pm$0.005   &  0.007 &  11333. \\
W CVn     &  53874.434$\pm$0.005   & -0.130 &  58852.      & XZ Cyg   $^2$ &  53865.553$\pm$0.002   &  0.004 &  11348. \\
W CVn     &  53880.504$\pm$0.004   & -0.130 &  58863.      & XZ Cyg   $^2$ &  53901.478$\pm$0.002   &  0.001 &  11425. \\
W CVn     &  53890.436$\pm$0.004   & -0.129 &  58881.      & DM Cyg    &  53917.428$\pm$0.002   &  0.062 &  26996.     \\
W CVn     &  53901.474$\pm$0.003   & -0.127 &  58901.      & DX Del    &  53915.483$\pm$0.004   &  0.055 &  30782.     \\
\hline
\end{tabular}
\normalsize
\end{center}
\end{table}
\clearpage
\begin{table}[!ht]
\centerline{\bf Table 1 (cont.): maxima of RR~Lyrae stars}
\begin{center}
\small
\begin{tabular}{llrr|llrr}\hline
Variable & Maximum      & $O-C$  & E & Variable & Maximum      & $O-C$  & E  \\
         & HJD 24\dots  & (days) &   &          & HJD 24\dots  & (days) &    \\
\hline
RW Dra    &  53836.569$\pm$0.002   &  0.153 &  32645.      & RR Gem    &  53809.371$\pm$0.002   & -0.343 &  31342.     \\
RW Dra    &  53837.467$\pm$0.003   &  0.165 &  32647.      & SZ Gem    &  53809.340$\pm$0.004   & -0.047 &  53110.     \\
RW Dra    &  53840.549$\pm$0.003   &  0.146 &  32654.      & GI Gem    &  53756.465$\pm$0.002   &  0.070 &  54031.     \\
RW Dra    &  53844.546$\pm$0.002   &  0.157 &  32663.      & GI Gem    &  53795.461$\pm$0.003   &  0.072 &  54121.     \\
RW Dra    &  53848.539$\pm$0.002   &  0.164 &  32672.      & GI Gem    &  53799.358$\pm$0.002   &  0.069 &  54130.     \\
RW Dra    &  53856.534$\pm$0.002   &  0.186 &  32690.      & TW Her    &  53842.503$\pm$0.004   & -0.010 &  80824.     \\
SU Dra    &  53337.504$\pm$0.003   &  0.037 &  14287.      & TW Her    &  53864.480$\pm$0.002   & -0.011 &  80879.     \\
SU Dra    &  53743.664$\pm$0.004   &  0.038 &  14902.      & TW Her    &  53866.478$\pm$0.004   & -0.011 &  80884.     \\
SU Dra    &  53749.615$\pm$0.003   &  0.046 &  14911.      & VX Her    &  53836.567$\pm$0.002   & -0.395 &  70462.     \\
SU Dra    &  53783.299$\pm$0.003   &  0.048 &  14962.      & VX Her    &  53851.595$\pm$0.003   & -0.395 &  70495.     \\
SU Dra    &  53806.410$\pm$0.003   &  0.044 &  14997.      & VX Her    &  53857.514$\pm$0.003   & -0.395 &  70508.     \\
SU Dra    &  53808.394$\pm$0.004   &  0.047 &  15000.      & VX Her    &  53858.422$\pm$0.002   & -0.398 &  70510.     \\
SU Dra    &  53839.432$\pm$0.003   &  0.045 &  15047.      & VX Her    &  53872.540$\pm$0.003   & -0.397 &  70541.     \\
SU Dra    &  53864.526$\pm$0.005   &  0.043 &  15085.      & VX Her    &  53903.504$\pm$0.002   &  0.057 &  70608.     \\
SW Dra    &  53798.400$\pm$0.005   &  0.079 &  48403.      & VZ Her    &  53837.574$\pm$0.003   &  0.061 &  38718.     \\
SW Dra    &  53806.354$\pm$0.002   &  0.057 &  48417.      & VZ Her    &  53871.480$\pm$0.002   &  0.062 &  38795.     \\
SW Dra    &  53831.418$\pm$0.003   &  0.056 &  48461.      & VZ Her    &  53875.442$\pm$0.004   &  0.061 &  38804.     \\
SW Dra    &  53839.395$\pm$0.005   &  0.058 &  48475.      & VZ Her    &  53901.422$\pm$0.003   &  0.061 &  38863.     \\
SW Dra    &  53843.375$\pm$0.004   &  0.050 &  48482.      & DL Her    &  53860.568$\pm$0.002   &  0.033 &  26456.     \\
SW Dra    &  53856.484$\pm$0.002   &  0.056 &  48505.      & DL Her    &  53866.477$\pm$0.005   &  0.026 &  26466.     \\
SW Dra    &  53860.470$\pm$0.004   &  0.055 &  48512.      & DL Her    &  53882.462$\pm$0.004   &  0.037 &  26493.     \\
XZ Dra    &  53917.411$\pm$0.002   & -0.104 &  25161.      & GO Hya    &  53710.581$\pm$0.003   & -0.070 &  44091.     \\
BC Dra    &  53748.561$\pm$0.003   &  0.077 &  15939.      & GO Hya    &  53738.581$\pm$0.010   & -0.073 &  44135.     \\
BC Dra    &  53802.531$\pm$0.003   &  0.078 &  16015.      & GO Hya    &  53759.570$\pm$0.003   & -0.086 &  44168.     \\
BC Dra    &  53807.562$\pm$0.002   &  0.072 &  16022.      & RR Leo    &  53746.662$\pm$0.004   &  0.070 &  23102.     \\
BC Dra    &  53833.476$\pm$0.002   &  0.082 &  16057.      & RR Leo    &  53760.688$\pm$0.002   &  0.072 &  23133.     \\
BC Dra    &  53836.354$\pm$0.004   &  0.081 &  16062.      & RR Leo    &  53838.502$\pm$0.002   &  0.074 &  23305.     \\
BC Dra    &  53856.504$\pm$0.010   &  0.083 &  16090.      & RR Leo    &  53843.477$\pm$0.002   &  0.073 &  23316.     \\
BC Dra    &  53866.567$\pm$0.005   &  0.072 &  16104.      & RX Leo    &  53839.471$\pm$0.002   &  0.078 &  26833.     \\
BC Dra    &  53892.482$\pm$0.006   &  0.082 &  16140.      & RX Leo    &  53858.433$\pm$0.002   &  0.091 &  26861.     \\
BC Dra    &  53897.518$\pm$0.005   &  0.081 &  16147.      & SS Leo    &  53759.570$\pm$0.002   & -0.044 &  19124.     \\
BC Dra    &  53905.435$\pm$0.003   &  0.083 &  16158.      & SS Leo    &  53776.484$\pm$0.003   & -0.041 &  19151.     \\
BC Dra    &  53915.498$\pm$0.010   &  0.072 &  16171.      & SS Leo    &  53801.531$\pm$0.003   & -0.048 &  19191.     \\
BD Dra    &  53737.642$\pm$0.005   &  0.144 &  20309.      & ST Leo    &  53796.382$\pm$0.004   & -0.026 &  54130.     \\
BD Dra    &  53740.589$\pm$0.002   &  0.146 &  20314.      & ST Leo    &  53801.646$\pm$0.002   & -0.020 &  54141.     \\
BD Dra    &  53756.532$\pm$0.002   &  0.184 &  20341.      & SZ Leo    &  53760.592$\pm$0.002   & -0.136 &  15528.     \\
BD Dra    &  53760.635$\pm$0.002   &  0.164 &  20348.      & WW Leo    &  53737.613$\pm$0.003   &  0.027 &  31276.     \\
BD Dra    &  53795.404$\pm$0.002   &  0.179 &  20407.      & WW Leo    &  53740.625$\pm$0.003   &  0.025 &  31282.     \\
BD Dra    &  53838.377$\pm$0.004   &  0.151 &  20480.      & WW Leo    &  53746.658$\pm$0.003   &  0.030 &  31292.     \\
BD Dra    &  53858.415$\pm$0.002   &  0.161 &  20514.      & AE Leo    &  53748.696$\pm$0.005   & -0.369 &  54106.     \\
BD Dra    &  53865.483$\pm$0.002   &  0.161 &  20526.      & AE Leo    &  53758.710$\pm$0.005   & -1.009 &  54123.     \\
BD Dra    &  53911.405$\pm$0.005   &  0.137 &  20604.      & AX Leo    &  53748.678$\pm$0.005   & -0.039 &  39217.     \\
BK Dra    &  53858.403$\pm$0.003   & -0.146 &  47857.      & AX Leo    &  53759.581$\pm$0.005   & -0.038 &  39232.     \\
BK Dra    &  53891.555$\pm$0.003   & -0.151 &  47913.      & V LMi     &  53787.456$\pm$0.002   &  0.027 &  62982.     \\
BK Dra    &  53897.472$\pm$0.005   & -0.155 &  47923.      & V LMi     &  53842.396$\pm$0.005   &  0.032 &  63083.     \\
BK Dra    &  53900.435$\pm$0.002   & -0.152 &  47928.      & V LMi     &  53848.377$\pm$0.002   &  0.030 &  63094.     \\
BK Dra    &  53910.501$\pm$0.003   & -0.152 &  47945.      & X LMi     &  53740.609$\pm$0.002   &  0.186 &  21248.     \\
BK Dra    &  53916.420$\pm$0.003   & -0.153 &  47955.      & X LMi     &  53758.401$\pm$0.004   &  0.185 &  21274.     \\
BT Dra    &  53783.575$\pm$0.003   & -0.002 &  39154.      & TT Lyn    &  53756.467$\pm$0.003   & -0.032 &  28630.     \\
BT Dra    &  53809.467$\pm$0.003   & -0.011 &  39198.      & TT Lyn    &  53795.302$\pm$0.002   & -0.030 &  28696.     \\
BT Dra    &  53849.496$\pm$0.002   & -0.012 &  39266.      & TW Lyn    &  53737.430$\pm$0.002   &  0.052 &  18086.     \\
BT Dra    &  53859.506$\pm$0.002   & -0.010 &  39283.      & TW Lyn    &  53744.658$\pm$0.003   &  0.052 &  18101.     \\
BT Dra    &  53865.396$\pm$0.004   & -0.006 &  39293.      & TW Lyn    &  53754.296$\pm$0.002   &  0.053 &  18121.     \\
BT Dra    &  53875.404$\pm$0.005   & -0.006 &  39310.      & RZ Lyr    &  53871.434$\pm$0.003   & -0.003 &  24818.     \\
BT Dra    &  53882.466$\pm$0.002   & -0.008 &  39322.      & RZ Lyr    &  53893.422$\pm$0.003   &  0.001 &  24861.     \\
RR Gem    &  53334.610$\pm$0.002   & -0.318 &  30147.      & RZ Lyr    &  53896.493$\pm$0.002   &  0.005 &  24867.     \\
RR Gem    &  53754.544$\pm$0.002   & -0.341 &  31204.      & RZ Lyr    &  53917.452$\pm$0.002   &  0.003 &  24908.     \\
\hline
\end{tabular}
\normalsize
\end{center}
\end{table}
\clearpage
\begin{table}[!ht]
\centerline{\bf Table 1 (cont.): maxima of RR~Lyrae stars}
\begin{center}
\small
\begin{tabular}{llrr|llrr}\hline
Variable & Maximum      & $O-C$  & E & Variable & Maximum      & $O-C$  & E  \\
         & HJD 24\dots  & (days) &   &          & HJD 24\dots  & (days) &    \\
\hline
AW Lyr    &  53911.483$\pm$0.003   &  0.025 &  57453.      & RV UMa    &  53801.652$\pm$0.002   &  0.098 &  18643.     \\
CN Lyr    &  53869.573$\pm$0.005   &  0.020 &  22809.      & RV UMa    &  53808.675$\pm$0.002   &  0.101 &  18658.     \\
CN Lyr    &  53881.502$\pm$0.005   &  0.019 &  22838.      & RV UMa    &  53809.612$\pm$0.002   &  0.101 &  18660.     \\
CN Lyr    &  53886.442$\pm$0.004   &  0.022 &  22849.      & RV UMa    &  53831.615$\pm$0.005   &  0.106 &  18707.     \\
CN Lyr    &  53911.533$\pm$0.002   &  0.019 &  22911.      & RV UMa    &  53838.633$\pm$0.003   &  0.103 &  18722.     \\
CN Lyr    &  53916.467$\pm$0.004   &  0.016 &  22923.      & RV UMa    &  53853.611$\pm$0.003   &  0.103 &  18754.     \\
IO Lyr    &  53856.524$\pm$0.004   & -0.026 &  24670.      & RV UMa    &  53869.522$\pm$0.005   &  0.100 &  18788.     \\
IO Lyr    &  53863.450$\pm$0.002   & -0.026 &  24682.      & RV UMa    &  53899.472$\pm$0.004   &  0.094 &  18852.     \\
IO Lyr    &  53871.530$\pm$0.003   & -0.026 &  24696.      & RV UMa    &  53900.411$\pm$0.004   &  0.097 &  18854.     \\
IO Lyr    &  53882.494$\pm$0.003   & -0.027 &  24715.      & TU UMa    &  53737.601$\pm$0.002   & -0.025 &  19557.     \\
IO Lyr    &  53897.493$\pm$0.004   & -0.033 &  24741.      & TU UMa    &  53842.439$\pm$0.003   & -0.027 &  19745.     \\
IO Lyr    &  53904.426$\pm$0.002   & -0.026 &  24753.      & TU UMa    &  53857.497$\pm$0.003   & -0.026 &  19772.     \\
IO Lyr    &  53912.498$\pm$0.002   & -0.033 &  24767.      & AB UMa    &  53739.604$\pm$0.010   &  0.119 &  29207.     \\
V455 Oph  &  53889.482$\pm$0.005   & -0.226 &  26561.      & AB UMa    &  53748.599$\pm$0.010   &  0.120 &  29221.     \\
V455 Oph  &  53904.456$\pm$0.005   &  0.222 &  26593.      & AB UMa    &  53838.529$\pm$0.005   &  0.113 &  29372.     \\
V455 Oph  &  53909.446$\pm$0.002   &  0.219 &  26604.      & AB UMa    &  53844.526$\pm$0.005   &  0.115 &  29382.     \\
AR Per    &  53738.455$\pm$0.010   &  0.053 &  62276.      & AB UMa    &  53850.515$\pm$0.005   &  0.108 &  29392.     \\
AR Per    &  53750.371$\pm$0.002   &  0.053 &  62304.      & AB UMa    &  53856.504$\pm$0.010   &  0.101 &  29402.     \\
VY Ser    &  53856.437$\pm$0.004   &  0.034 &  31692.      & AB UMa    &  53859.502$\pm$0.008   &  0.101 &  29407.     \\
VY Ser    &  53881.439$\pm$0.002   &  0.043 &  31726.      & AB UMa    &  53865.508$\pm$0.010   &  0.111 &  29417.     \\
AN Ser    &  53844.486$\pm$0.003   &  0.003 &  74962.      & ST Vir    &  53845.522$\pm$0.002   &  0.037 &  31909.     \\
AN Ser    &  53857.533$\pm$0.005   & -0.002 &  74987.      & ST Vir    &  53857.429$\pm$0.004   &  0.030 &  31938.     \\
AN Ser    &  53892.517$\pm$0.004   &  0.004 &  75054.      & ST Vir    &  53871.403$\pm$0.002   &  0.036 &  31971.     \\
AN Ser    &  53902.430$\pm$0.004   & -0.003 &  75073.      & UV Vir    &  53761.581$\pm$0.002   &  0.017 &  23453.     \\
AT Ser    &  53845.609$\pm$0.004   &  0.009 &  16137.      & AF Vir    &  53860.571$\pm$0.002   & -0.097 &  27962.     \\
AT Ser    &  53872.496$\pm$0.003   &  0.020 &  16173.      & AV Vir    &  53842.510$\pm$0.002   &  0.003 &  18834.     \\
AT Ser    &  53881.451$\pm$0.002   &  0.017 &  16185.      & AV Vir    &  53869.454$\pm$0.004   &  0.014 &  18875.     \\
AV Ser    &  53889.526$\pm$0.002   &  0.134 &  52396.      & BB Vir    &  53843.488$\pm$0.002   &  0.242 &  30205.     \\
AV Ser    &  53890.503$\pm$0.004   &  0.135 &  52398.      & BB Vir    &  53849.610$\pm$0.002   &  0.240 &  30218.     \\
AV Ser    &  53872.454$\pm$0.002   &  0.126 &  52361.      & BN Vul    &  53890.453$\pm$0.005   &  0.062 &  14071.     \\
RU Sex   $^3$ &  53760.485$\pm$0.005   &  0.018 &  31818.  & BN Vul    &  53912.435$\pm$0.002   &  0.061 &  14108.     \\
\hline
ref.:&  \multicolumn{6}{l}{1 {\tt Boninsegna, 1990}}\\
     &  \multicolumn{6}{l}{2 {\tt Baldwin and Samolyk, 2003}}\\
     &  \multicolumn{6}{l}{3 {\tt Williams, 1993}}\\
\hline
\end{tabular}
\normalsize
\end{center}
\end{table}


\references

Baldwin, M.E., Samolyk, G., 2003, AAVSO RR Lyrae Monographs 1, (2)

Bertin, E., Arnouts, S., 1996, {\it A\&AS}, {\bf 117}, 393

Bo\"er, M., Atteia, J. L., Bringer, M., Gendre, B., Klotz, A., Malina, R.,
de Freitas Pacheco, J. A., Pedersen, H., 2001, {\it A\&A}, {\bf 378}, 76

Boninsegna, R., 1990, {\it JAAVSO}, {\bf 19}, 126, (1)

Boninsegna, R., Vandenbroere, J., Le Borgne, J.F., The Geos Team, 2002,
{\it ASP Conf.\ Ser.}, {\bf 259}, 166, IAU Colloq.\ 185,
``Radial and Nonradial Pulsations as Probes of Stellar Physics''

Bringer, M., Bo\"er, M., Peignot, C., Fontan, G., Merce, C., 1999,
{\it A\&AS}, {\bf 138}, 581

Kholopov, P.N., et al., 1985, {\it General Catalogue of Variable Stars},
Moscow: Nauka Publishing House, 1988, 4th ed., edited by Kholopov, P.N.;
and 2006 web edition ({\tt http://www.sai.msu.su/groups/cluster/gcvs/})

Williams, D.B., 1993, {\it JAAVSO}, {\bf 22}, 116

\endreferences

\end{document}

