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\IBVShead{4866}{25 March 2000}

\IBVStitle{First Photometric Observations of V357 Pegasi}

\IBVSauth{Ya\c{s}arsoy, B\"{u}lent; S\.{i}pah\.{i}, Esin; Kesk\.{i}n, Varol} 

\IBVSinsto{Ege University, Science Faculty, Astronomy \& Space Sciences Department, Bornova 35100, \.{I}zmir, Turkey,\\ \indent email: boy@astronomy.sci.ege.edu.tr, sipahi@astronomy.sci.ege.edu.tr, keskinv@astronomy.sci.ege.edu.tr}

\SIMBADobjAlias{V357 Peg}{HD 222994}

\begintext

\IBVSTnam{V357 Peg = BD +24\deg4828 = HIP 117185 = HD 222994}

\IBVSTcoo{23\hr45\mm35\fsec06}{+25\deg28\arcm18\farcs9}{2000}

\IBVSTobs{Ege University Observatory, 48-cm Cassegrain telescope}

\IBVSTdet{Hamamatsu, R 4457 (PMT)}

\IBVSTfil{Johnson B, V and R}

\IBVSTcomp{BD +25\deg5001 = TYC 2254-01880-1}

\IBVSTchk{BD +23\deg4795 = HD 222633}

\IBVSTsysn

\IBVSTdata{Upon request}

\IBVSTtyp{ EW }

\IBVSTrem{
V357 Peg is EW type eclipsing binary system which was discovered by
HIPPARCOS (ESA, 1997). The mean orbital period derived by HIPPARCOS
from the light curve fit is 0\fday578452 and the epoch is given as JD
2448500.3159 (ESA, 1997). Spectral type of the system is given as F5.
V357 Peg was observed in 13~October,~6, 27, 30~November and 1~December
1999 at the Ege University Observatory. It can be seen from Figure~1
that the maxima of all light curves seem to be of equal magnitudes and
they seem symmetrical. Like almost all W UMa systems, there are
irregular light variations over all phases in the light curves but no
significant scattering are seen in minima. Our light curves show that
the secondary minima of the system are deeper than the primary minima.
Three primary and one secondary minima were obtained during the
observations. These minima were given among the other systems' minima
in Keskin et al.\ (2000). The new computed period and epoch were also
given.}

\IBVSfig{10cm}{4866-f1.eps}{}

\references

ESA, 1998, The Hipparcos \& Tycho Catalogues, SP--1270

Keskin, V., Ya\c{s}arsoy, B., Sipahi, E., 2000, {\it IBVS}, No.\ 4855

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\endreferences

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\centerline{\bf Erratum}

\bigskip
See IBVS 5282.  \IBVSlink{http://www.konkoly.hu/cgi-bin/IBVS?5282}

\bigskip
\rightline{The Editors\qquad}
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