# RV Cygni

> variable star

**Wikidata**: [Q2889579](https://www.wikidata.org/wiki/Q2889579)  
**Source**: https://4ort.xyz/entity/q2889579


## References

1. SIMBAD
2. VizieR
3. Classification and Identification of IRAS Sources with Low-Resolution Spectra
4. VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+, 2007-2017)
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. The chemical composition of carbon stars. I. Carbon, nitrogen and oxygen in 30 cool carbon stars in the galactic disk