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Latest Details
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| Name |
KU Cyg |
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| AAVSO UID |
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| Constellation |
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| J2000.0 |
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| B1950.0 |
20 11 12.16 +47 14 35.7 |
| Proper motion |
| RA: 0.219 +/- 0.167 mas/y | Dec: -1.272 +/- 0.155 mas/y | Source: Gaia DR1 |
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| Galactic coord. |
83.147 +7.257 |
Other names
(Internal only)
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AN 436.1928 |
ASASSN-V J201245.14+472341.0 |
HIP 99599 |
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IOMC 3563000051 |
SVS 877 |
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(Not logged in) Add name
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| Variability type |
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EA/GS |
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| Spectral type |
B7:V+K5IIIe |
| Mag. range |
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10.73 - 12.38 V |
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| Discoverer |
-- |
| Epoch |
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| Outburst |
-- |
| Period |
38.4396 d |
| Rise/eclipse dur. |
8% (3.08 d) |
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Remarks
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Some references may be clicked to view in new window. Roll over index number to view submission details.
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1 |
Otero, Sebastian Alberto
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Total eclipses. Out of eclipse variations come from luminosity changes in an eccentric accretion disk. |
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2 |
GCVS Team |
Min II 11.15; d = 0.047P. Shape of the light curve varies. |
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(Not logged in) Add remark
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References
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Click reference title/citation to view in new window. Roll over index number to view submission details.
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1 |
Bob Nelson's O-C files, 2016 |
-- |
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2 |
J. Alfonso-Garzon, A. Domingo, J.M. Mas-Hesse, A. Gimenez, 2012,
arXiv:1210.0821 [astro-ph.IM] (online info) |
2012arXiv1210.0821A |
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3 |
J.M. Kreiner, 2004, Acta Astronomica, vol. 54, pp 207-210 |
2004AcA....54..207K |
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4 |
KU CYG and its Eccentric Accretion Disk |
1997AcA....47..345S |
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5 |
KU Cygni: New Spectroscopic and Photometric Solutions of a Long-Period
Accretion-Disk Binary |
1995AJ....110.2378O |
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6 |
The Algol-type binary with an accretion disk |
1992AcA....42..355Z |
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7 |
KU Cygni and its thick, dusty accretion disk |
1988AJ.....96.1439O |
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8 |
D.M.Popper, ApJ 139, 143, 1964. |
1964ApJ...139..143P |
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9 |
M.Huruhata, S.Gaposchkin, HB N914, 1940. |
1940BHarO.914...11H |
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External Links
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Location
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Select a Location for more details.
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Catalog Data
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Information from selected catalogs obtained by cross-matching to 2 arc seconds using the CDS X-Match Service. These data may not be complete.
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2MASS
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J = 8.94 | H = 8.23 | K = 7.99 | J - K = 0.95 |
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AllWISE
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W1 = 7.82 | W2 = 7.89 | W3 = 7.73 | W4 = 7.22 | W1 - W2 = -0.07 | W3 - W4 = 0.51 |
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APASS-DR9
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B = 11.33 | V = 10.91 | g' = 11.11 | r' = 10.64 | i' = 10.31 | B - V = 0.42 |
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Images
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Please review Digitized Sky Survey Acknowledgment and Copyright.
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Supporting Documents
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There are currently no supporting documents on file for this star.
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Revision History
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Currently approved revision is checked. Click revision number to view details of that revision.
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4 |
Otero, Sebastian Alberto
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2011-10-23 01:03 UTC |
Variability and spectral type from 1997AcA....47..345S |
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3 |
McCann, James R.
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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 |
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2 |
Admin, VSX
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2010-01-05 04:43 UTC |
Position updated from the GCVS version of November 2009. |
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1 |
Admin, VSX
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2005-12-18 01:33 UTC |
Initial upload. |
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