# SS Cygni

> variable star in the constellation Cygnus

**Wikidata**: [Q4048899](https://www.wikidata.org/wiki/Q4048899)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/SS_Cygni)  
**Source**: https://4ort.xyz/entity/ss-cygni


## References

1. SIMBAD
2. The systemic velocities of four long-period cataclysmic variable stars
3. Freebase Data Dumps. 2013
4. General Catalogue of Variable Stars, 3rd ed.
5. Disentangling cataclysmic variables in Gaia's HR diagram
6. The first INTEGRAL-OMC catalogue of optically variable sources
7. Catalog of Galactic OB Stars
8. Gaia Data Release 2
9. Catalogue of Stellar Photometry in Johnson's 11-color system
10. Fourth USNO CCD Astrograph Catalog
11. Gaia Early Data Release 3
12. General Catalogue of Stellar Radial Velocities
13. Quantifying the carbon abundances in the secondary stars of SS Cygni, RU Pegasi, and GK Persei