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Name
VW Cep
AAVSO UID
Constellation
J2000.0
B1950.0
20 38 03.40 +75 24 57.8
Proper motion
Galactic coord.
109.224 +20.058
Other names
(Internal only)
1RXS J203719.4+753554
AAVSO 2038+75
BD+75 752
G 261-28
GJ 1255
GJ 1255.0 AB
GJ 9703
HD 197433
HIP 101750
IRAS 20381+7525
LTT 16039
NLTT 49671
PPM 10614
RX J2037.2+7535
SAO 9828
TYC 4585-3284-1
WDS J20374+7536AB
X 20380+754
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Variability type
EW/KW
Spectral type
G5+K0Ve
Mag. range
7.31 - 7.71 V
Discoverer
--
Epoch
Outburst
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Period
0.2783089 d (6.67941 h)
Rise/eclipse dur.
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Remarks
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1
GCVS Team
VB A (B 10.3m, a = 0.51", P = 30.45a [J.L.Hershey, AJ 80, 662, 1975. ]); mu alpha = +0.0899s, mu delta = +0.560". Min II 7.56. Shape of the light curve and depths of Min I and Min II vary. P var. Min I = 2433483.4257 + 0.27831758d*E + 0.050d*cos(0.004813deg*(E - 4700)) (JD2424763 - 41200) [I.Todoran, V.Pop, AA 22, N3, 267, 1972. ]; since JD2441000 - see Table. Period change study see also in [A.P.Linnell, PASP 92, 202, 1980. ]. X-ray source.
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References
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1
Bob Nelson's O-C files, 2016
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2
Perryman, M. A. C.; et al., 1997, The HIPPARCOS and TYCHO catalogues
1997HIP...C......0E
3
J.M.Kreiner, M.Winiarski, AA 31, N3, 351, 1981.
1981AcA....31..351K
4
L.Sorgsepp, Kh.Albo, Tartu Publ 42, 103, 1974.
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External Links
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Location
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Kamogata Wide-field Survey (KWS)
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O-C Gateway (coords)
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Lichtenknecker Database
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Catalog Data
Information from selected catalogs obtained by cross-matching to 2 arc seconds using the CDS X-Match Service . These data may not be complete.
2MASS
J = 5.96 H = 5.42 K = 5.31 J - K = 0.65
Images
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Supporting Documents
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Revision History
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3
Otero, Sebastian Alberto
2016-06-01 20:31 UTC
Epoch from Bob Nelson's O-C files (2014). Period from AAVSO data. Range from HIPPARCOS and AAVSO V data.
2
Admin, VSX
2010-01-05 04:43 UTC
Position updated from the GCVS version of November 2009.
1
Admin, VSX
2005-12-18 01:33 UTC
Initial upload.