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Name
KU Cyg
AAVSO UID
000-BFR-955 (No observations)
Constellation
J2000.0
B1950.0
20 11 12.16 +47 14 35.6
Galactic coord.
83.147 +7.257
Other names(Internal only)
AN 436.1928
HIP 99599
SVS 877
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Variability type
EA/D:/RS:
Spectral type
F4p+K5eIII:
Mag. range
10.73 - 12.38 V
Discoverer
--
Epoch
Outburst
--
Period
38.4396 d
Rise/eclipse dur.
8% (3.08 d)
Remarks
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1
Otero, Sebastian Alberto
Total eclipses. Out of eclipse variations come from luminosity changes in an eccentric accretion disk.
2
GCVS Team
Min II 11.15; d = 0.047P. Shape of the light curve varies.
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References
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1
Bob Nelson's O-C files, 2016
--
2
J. Alfonso-Garzon, A. Domingo, J.M. Mas-Hesse, A. Gimenez, 2012,
2012arXiv1210.0821A
3
J.M. Kreiner, 2004, Acta Astronomica, vol. 54, pp 207-210
2004AcA....54..207K
4
KU CYG and its Eccentric Accretion Disk
1997AcA....47..345S
5
KU Cygni: New Spectroscopic and Photometric Solutions of a Long-Period
1995AJ....110.2378O
6
The Algol-type binary with an accretion disk
1992AcA....42..355Z
7
KU Cygni and its thick, dusty accretion disk
1988AJ.....96.1439O
8
D.M.Popper, ApJ 139, 143, 1964.
1964ApJ...139..143P
9
M.Huruhata, S.Gaposchkin, HB N914, 1940.
1940BHarO.914...11H
External Links
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Location
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AAVSO Variable Star Plotter
AAVSO Light Curve
AAVSO WebObs
APASS
AAVSOnet EPD
SIMBAD
SIMBAD Clickable Map
SIMBAD Coordinate query
VizieR Search
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GCVS
ASAS-SN Sky Patrol
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Hipparcos Epoch Photometry Plot
NSVS
CRTS
ZTF
SuperWASP
Pan-STARRS1 Data
Pan-STARRS1 Images
SkyMorph
Kamogata Wide-field Survey (KWS)
O-C Gateway (name)
O-C Gateway (coords)
Atlas of O-C Diagrams
Lichtenknecker Database
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Supporting Documents
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Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
4
Otero, Sebastian Alberto
2011-10-23 01:03 UTC
Variability and spectral type from 1997AcA....47..345S
3
McCann, James R.
2010-05-23 09:16 UTC
Updating period and epoch from very old values. Popper 1964ApJ...139..143P gives 2433884.84 + 38.4393E. Updating to HJD = 2452528.1 + E x 38.4396 per J.M. Kreiner, 2004, Acta Astronomica, vol. 54, pp 207-210 see http://www.as.wsp.krakow.pl/minicalc/CYGKU.HTM
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.
