# Tau Cygni

> variable star in the constellation Cygnus

**Wikidata**: [Q3231819](https://www.wikidata.org/wiki/Q3231819)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Tau_Cygni)  
**Source**: https://4ort.xyz/entity/tau-cygni


## References

1. SIMBAD
2. MK classification for visual binary components
3. Source
4. Washington Double Star Catalog
5. Freebase Data Dumps. 2013
6. The Tycho double star catalogue
7. Gaia Data Release 2
8. Catalogue of Stellar Photometry in Johnson's 11-color system
9. UBV photometry of stars whose positions are accurately known
10. UBV photometry of stars whose positions are accurately known. VII
11. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
12. Gaia Data Release 3
13. Astrophysical supplements to the ASCC-2.5: Ia. Radial velocities of ∼55000 stars and mean radial velocities of 516 Galactic open clusters and associations
14. Ca II HK emission in rapidly rotating stars
15. Validation of the new Hipparcos reduction
16. Rotational velocities of A-type stars. IV. Evolution of rotational velocities