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  RS Cyg  
000-BCK-976 (43521 observations)  
Cygnus Sequence
20 13 23.66 +38 43 44.5  (303.34858 +38.72903) Search nearby
B1950.0 20 11 34.66 +38 34 36.8
Proper motion
RA: 8.267 +/- 0.044 mas/yDec: 1.232 +/- 0.046 mas/ySource: Gaia DR1
Galactic coord. 75.927 +2.422
Other names

(Internal only)
AAVSO 2009+38 BD+38 3957 HD 192443
HIP 99653 Hen 3-1852 IOMC 3151000049
IRC +40397 RAFGL 2528 SAO 69636
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Variability type
Spectral type C8,2e(N0pe)
Mag. range
6.5 - 9.5 V
Discoverer --
27 Sep 1963 (HJD 2438300) Ephemeris
Outburst --
Period 417.39 d
Rise/eclipse dur. --
Some references may be clicked to view in new window. Roll over index number to view submission details.
1 GCVS Team VB A (B 7.09m, 132", 355deg; C 9.3m, 56", 106deg). Epoch of light minimum is given. The shape of the light curve strongly varies. Double maxima are sometimes observed (Min II at the phase 0.5P).
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Click reference title/citation to view in new window. Roll over index number to view submission details.
1 J. Alfonso-Garzon, A. Domingo, J.M. Mas-Hesse, A. Gimenez, 2012,
arXiv:1210.0821 [astro-ph.IM] (online info)
2 G.Romano, Padova Publ N156, 1969. --
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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 = 3.21H = 1.99K = 1.32J - K = 1.89
AllWISE W3 = 0.46W4 = 0.19W3 - W4 = 0.27
APASS-DR9 B = 11.47V = 7.70g' = 9.22r' = 6.82i' = 5.58B - V = 3.78
Please review Digitized Sky Survey Acknowledgment and Copyright.
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Supporting Documents
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 Binocular program
 Legacy LPV Program
 LPV Program
 LPV Humps
 Percy's Unusual LPVs
Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
2 Admin, VSX 2010-01-04 23:43 UTC Position updated from the GCVS version of November 2009.
1 Admin, VSX 2005-12-17 20:33 UTC Initial upload.