# Z Cygni

> variable star in the constellation Cygnus

**Wikidata**: [Q31898871](https://www.wikidata.org/wiki/Q31898871)  
**Source**: https://4ort.xyz/entity/z-cygni


## References

1. General Catalogue of Variable Stars
2. SIMBAD
3. Catalogue of spectra of Mira variables of types Me and Se
4. General Catalogue of Variable Stars, 3rd ed.
5. The Tycho-2 catalogue of the 2.5 million brightest stars
6. Catalogue of Stellar Photometry in Johnson's 11-color system
7. Gaia Data Release 2
8. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
9. Vitesses radiales. Catalogue WEB: Wilson Evans Batten. Radial velocities: The Wilson-Evans-Batten catalogue
10. General Catalogue of Stellar Radial Velocities